Mineral Specimens - page 2
Mexico - Canada

TV62AH5: Floater complete Boleite crystal with a very well balanced development of the octahedron and the cube faces that are very bright.
We’ll send the sample in its original Perkin’s box from the R.J. Noble collection, also containing the collection label in which it appears that it had previously been in the “Bunk” Melanson collection.
Amelia Mine, Santa Rosalía (El Boleo), Boleo District, Municipio Mulegé, Baja California Sur  Mexico

Specimen size: 1.2 × 1 × 1 cm = 0.5” × 0.4” × 0.4”

TM10AD0: A novelty at Tucson 2016. Aggregates of small and very sharp cubic Boleite crystals that are translucent, very bright and on matrix, with Gypsum and Paratacamite. The sample is from recent preparation works at the mine.
Amelia Mine, Santa Rosalía (El Boleo), Boleo District, Municipio Mulegé, Baja California Sur  Mexico (2016)

Specimen size: 4.9 × 3.8 × 2.3 cm = 1.9” × 1.5” × 0.9”

Main crystal size: 0.3 × 0.3 cm = 0.1” × 0.1”

TJ13S7: Aggregates on matrix of Chrysocolla pseudomorphous after small cubic crystals of Boleite. This rare pseudomorph was discovered a few years ago, but on paler samples, in an area near Amelia (not in the mine itself), but until the end of 2010 new samples had not been recovered.
Manto 3, Santa Rosalía (El Boleo), Boleo District, Municipio Mulegé, Baja California Sur  Mexico (10-12/2010)

Specimen size: 2.8 × 2.6 × 1.7 cm = 1.1” × 1.0” × 0.7”

Main crystal size: 0.5 × 0.4 cm = 0.2” × 0.2”

TC36V1: Aggregate on matrix of Chrysocolla pseudomorphs after cubic crystals of Boleite. This rare pseudomorph was discovered a few years ago in an area near Amelia (not in the mine itself), but until the end of 2010 new samples had not been recovered.
Manto 3, Santa Rosalía (El Boleo), Boleo District, Municipio Mulegé, Baja California Sur  Mexico (10-12/2010)

Specimen size: 5.6 × 5 × 1.3 cm = 2.2” × 2.0” × 0.5”

Main crystal size: 0.4 × 0.4 cm = 0.2” × 0.2”

TA16V1: Aggregate on matrix of Chrysocolla pseudomorphs after small crystals of Boleite and also forming concretions and botryoidal growths. This rare pseudomorph was discovered a few years ago in an area near Amelia (not in the mine itself), but until the end of 2010 new samples had not been recovered.
Manto 3, Santa Rosalía (El Boleo), Boleo District, Municipio Mulegé, Baja California Sur  Mexico (10-12/2010)

Specimen size: 5.7 × 4 × 3.4 cm = 2.2” × 1.6” × 1.3”

Main crystal size: 0.6 × 0.6 cm = 0.2” × 0.2”

TT13AK0: With a different presentation than other more common Mexican Mimetites, here it forms spheroidal aggregates on a Goethite matrix of crystals with a very sharp pyramidal habit, with good terminations, very bright and with a very intense yellow-orange color.
The piece comes from the collection of José Luis Vallecillo, from Madrid.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 3.9 × 2.9 × 2.3 cm = 1.5” × 1.1” × 0.9”

Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”

TC86AK0: With a different presentation than other more common Mexican Mimetites, here it forms spheroidal aggregates on a Goethite matrix of crystals with a very sharp pyramidal habit, with good terminations, very bright and with a very intense yellow-orange color.
The piece comes from the collection of José Luis Vallecillo, from Madrid.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 9.4 × 8.1 × 5.1 cm = 3.7” × 3.2” × 2.0”

Main crystal size: 0.7 × 0.6 cm = 0.3” × 0.2”

TF99AJ4: Groups of prismatic Mimetite crystals with acute pyramidal terminations. They are bright and have an orange color, with deep red zones at the bases of the prisms.
San Antonio Mine (San Antonio el Grande Mine), East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 4.9 × 3.9 × 2.8 cm = 1.9” × 1.5” × 1.1”

DP10AJ8: A radial growth on matrix of very aerial and well defined crystals with perfect terminations. They are translucent, bright and have a snowy white color.
The sample is from the Daunis collection whose label we will send to the buyer.
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 3.5 × 2.1 × 2 cm = 1.4” × 0.8” × 0.8”

Main crystal size: 1.7 × 0.8 cm = 0.7” × 0.3”

TP67AF6: Fan-like aggregates, on limonite matrix, of transparent Hemimorphite crystals that are sharp, bright, and have excellent terminations. Some of them have reddish inclusions of Hematite. Transparent and colorless Calcite crystals are associated.
The sample is from the Vallecillo collection, Madrid.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 10.7 × 8.8 × 5.6 cm = 4.2” × 3.5” × 2.2”

Main crystal size: 3 × 1.5 cm = 1.2” × 0.6”

TC13AF1: Botryoidal Rhodochrosite with a vivid pink color and on matrix, with Galena and Pyrrhotite crystals.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 2.9 × 2.2 × 1.6 cm = 1.1” × 0.9” × 0.6”

TH14AF1: Botryoidal Rhodochrosite with a vivid pink color and on matrix, with Galena and Pyrrhotite crystals.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 3.5 × 3 × 2.7 cm = 1.4” × 1.2” × 1.1”

TK26AF1: Botryoidal Rhodochrosite with a vivid pink color and on matrix, with Galena and Pyrrhotite crystals.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 4.8 × 3.8 × 3.7 cm = 1.9” × 1.5” × 1.5”

MR89AJ0: Two generations of Calcite crystals, the first of them with an acute scalenohedral shape and rich in deep red Hematite inclusions, and the second one with more complex crystals that are colorless and transparent. A Mexican classic of great quality.
J North, 18-19 levels, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (±1990)

Specimen size: 11.2 × 10.2 × 9.9 cm = 4.4” × 4.0” × 3.9”

Main crystal size: 9 × 5.2 cm = 3.5” × 2.0”

TB98AJ0: Smithsonite replacing an aggregate of scalenohedral Calcite crystals that show successive replacement shells with phantom growths, indicating that the Calcite was partially replaced, some was dissolved, and the external shell was completely substituted by greenish-yellow Smithsonite. We will send a copy of the analysis to the buyer.
San Antonio Mine (San Antonio el Grande Mine), level 8, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (04/2013)

Specimen size: 7.3 × 4.1 × 5.9 cm = 2.9” × 1.6” × 2.3”

Main crystal size: 3.4 × 1.5 cm = 1.3” × 0.6”

TC89AD5: Aggregate of Smithsonite crystals replacing Calcite. They show successive replacement shells indicating that the Calcite was only partially replaced during a first phase, and later completely replaced by Smithsonite. We'll send a copy of the analysis of the Smithsonite to the buyer.
San Antonio Mine (San Antonio el Grande Mine), level 8, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (04/2013)

Specimen size: 8.5 × 6.3 × 3.5 cm = 3.3” × 2.5” × 1.4”

Main crystal size: 2.6 × 1.5 cm = 1.0” × 0.6”

TB86Z6: Aggregate of cubic crystals with echeloned edges, with geometric color zones with very deep violet color on some cube faces and very transparent interiors. The sample has very good quality for the San Antonio mine where Fluorite is a not so common species.
San Antonio Mine (San Antonio el Grande Mine), East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (01/2014)

Specimen size: 6 × 5 × 3.3 cm = 2.4” × 2.0” × 1.3”

Main crystal size: 2.1 × 2 cm = 0.8” × 0.8”

TY16V4: A novelty at Tucson 2012. Unusual crystalline shape for the Vanadinite, whose aggregates, very aerial, are formed by crystals with a prism and an acute dipyramid with very well defined faces and edges and are on matrix with small crystals of Calcite. They show a creamy color and are on matrix.
This sample has been noted and photographed in the Mineralogical Record magazine (January-February 2018, pg. 167)
San Antonio Mine (San Antonio el Grande Mine), Chimenea Cox, level 4, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (2011)

Specimen size: 3.4 × 2.9 × 1.8 cm = 1.3” × 1.1” × 0.7”

Main crystal size: 1.5 × 0.5 cm = 0.6” × 0.2”

TM52Y0: Very aerial aggregates of crystals, some of them partially doubly terminated, showing an unusual crystalline shape for Vanadinite, with a prism and an acute dipyramid. They have very well defined faces and edges, a creamy color and are on matrix, with small crystals of Gypsum.
San Antonio Mine (San Antonio el Grande Mine), Chimenea Cox, level 4, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (2011)

Specimen size: 16 × 9.7 × 6.5 cm = 6.3” × 3.8” × 2.6”

Main crystal size: 1.2 × 0.6 cm = 0.5” × 0.2”

FT86: Two generations of Calcite. The first generation was stalactitical and the second generation was the classic locality crystal form. Both first and second generation have brilliant crystals, and both are partially colored by brown iron oxides. Great esthetics in this decorative specimen.
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 13.5 × 9 × 7.8 cm = 5.3” × 3.5” × 3.1”

MP51AF0: Acute Creedite crystals with very well defined faces and edges. They are transparent, very bright, with an intense and uniform violet color and, in some areas on the sample there are reddish Hematite inclusions. The sample is from the famous cavity opened at Santa Eulalia in 1984 that provided the best Creedite samples at the locality.
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (1984)

Specimen size: 6.3 × 4.5 × 4.3 cm = 2.5” × 1.8” × 1.7”

Main crystal size: 0.6 × 0.3 cm = 0.2” × 0.1”

TT87AH5: Group of thick tabular crystals that have simple crystalline forms with very well defined faces and edges and with a color and luster among the best known for the locality.
A beautiful Mexican classic that we’ll send in its original Perkin’s box from the R.J. Noble collection, also containing the collection label in which it appears that it had previously been in the Sullivan collection.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 2.4 × 2.2 × 2 cm = 0.9” × 0.9” × 0.8”

Main crystal size: 1.1 × 0.9 cm = 0.4” × 0.4”

TB27AH4: Thick tabular isolated crystals on matrix with minor As rich Vanadinite. With simple forms, very well defined faces and edges and with a color and luster among the best known for the locality. A beautiful Mexican classic.
Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 3.1 × 1.9 × 1.4 cm = 1.2” × 0.7” × 0.6”

Main crystal size: 1.5 × 1.5 cm = 0.6” × 0.6”

VD67Z4: Druse of very bright equant Wulfenite crystals. They have a very intense and uniform orange color and are on matrix, with aggregates of small Calcite crystals.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico (±1968)

Specimen size: 5.4 × 4.5 × 4 cm = 2.1” × 1.8” × 1.6”

Main crystal size: 0.5 × 0.3 cm = 0.2” × 0.1”

MF36AE7: Aggregate of Wulfenite crystals between thick tabular and equant. They are bright, have a very intense orange color and are partially coated by white botryoidal Willemite aggregates.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 7.1 × 5.2 × 3.5 cm = 2.8” × 2.0” × 1.4”

Main crystal size: 0.9 × 0.7 cm = 0.4” × 0.3”

TT88AD9: Single tabular Wulfenite crystals that are translucent with an intense orange color and on a limonite matrix partially coated by very fluorescent white Willemite.
Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 9.8 × 8.5 × 6.9 cm = 3.9” × 3.3” × 2.7”

Main crystal size: 1.1 × 1 cm = 0.4” × 0.4”

CQ27AD2: Rhombohedral Calcite crystal with fine polycrystalline growths on its faces. It has a white color and is implanted on a matrix of colorless Fluorite crystals, twinned Sphalerite crystals and aggregates of small Quartz crystals. A Mexican classic.
Naica, Municipio Saucillo, Chihuahua  Mexico

Specimen size: 8 × 7 × 5.7 cm = 3.1” × 2.8” × 2.2”

Main crystal size: 2.6 × 2.4 cm = 1.0” × 0.9”

MV29AG9: Very sharp and twinned Sphalerite crystals with very well defined faces and edges. They are very bright and are on matrix with small Quartz and Pyrite crystals, and colorless very clear Fluorite crystals. The shape of this Sphalerite is quite different than other Sphalerites from this mine.
Naica Mine, Naica, Municipio Saucillo, Chihuahua  Mexico

Specimen size: 11.5 × 6.3 × 6 cm = 4.5” × 2.5” × 2.4”

Main crystal size: 2.5 × 1.9 cm = 1.0” × 0.7”

TQ54AH7: Polycrystalline growth of cubes of Fluorite crystals that are transparent and bright, have a uniform pale green color, are coated by small Calcite crystals and are on a matrix with cubo-octahedral Galena crystals. A magnificent classic of Mexican mineralogy.
Naica, Municipio Saucillo, Chihuahua  Mexico (±1998)

Specimen size: 15.5 × 10.4 × 6.4 cm = 6.1” × 4.1” × 2.5”

Main crystal size: 6 × 4.4 cm = 2.4” × 1.7”

GV96R9: A fanlike group of flat prismatic crystals. They have uniform sky blue color and good terminations.
Naica, Municipio Saucillo, Chihuahua  Mexico (±1987)

Specimen size: 14 × 7.7 × 3.6 cm = 5.5” × 3.0” × 1.4”

TG93AJ2: A novelty at Tucson 2017. Parallel growths of thick lenticular Calcite crystals with very well defined faces and edges. They are clear pink colored and coated by dark brown manganese oxides. There is a second botryoidal Calcite growth with a lovely pastel-pink color.
Palmarejo Mine, Palmarejo, Municipio Chinipas, Chihuahua  Mexico (10/2016)

Specimen size: 10.2 × 6.9 × 4 cm = 4.0” × 2.7” × 1.6”

TQ26AJ1: A novelty at Tucson 2019. Floater group of bright Chalcopyrite crystals with very well defined parallel growths, with white Quartz crystals and doubly terminated scalenohedral Calcite crystals.
El Bolivar Mine, Piedras Verdes (Triguito), Municipio Urique, Chihuahua  Mexico (10/2018)

Specimen size: 7.2 × 4.6 × 4.2 cm = 2.8” × 1.8” × 1.7”

Main crystal size: 2 × 2 cm = 0.8” × 0.8”

TM14AJ1: A novelty at Tucson 2019. Group of bright Chalcopyrite crystals with very well defined parallel growths partially coated by small epigenetic Galena crystals and implanted on a group of white, doubly terminated Quartz crystals.
El Bolivar Mine, Piedras Verdes (Triguito), Municipio Urique, Chihuahua  Mexico (10/2018)

Specimen size: 8.6 × 4.5 × 3.2 cm = 3.4” × 1.8” × 1.3”

Main crystal size: 2.5 × 1.8 cm = 1.0” × 0.7”

TP6AJ1: A novelty at Tucson 2019. Bright Chalcopyrite crystals with very well defined parallel growths partially coated by small epigenetic Galena crystals and implanted on a group of white, doubly terminated Quartz crystals with very acute and well defined scalenohedral Calcite crystals.
El Bolivar Mine, Piedras Verdes (Triguito), Municipio Urique, Chihuahua  Mexico (10/2018)

Specimen size: 9 × 6.4 × 5.1 cm = 3.5” × 2.5” × 2.0”

Main crystal size: 2.3 × 2.1 cm = 0.9” × 0.8”

TE7Z3: Floater aggregate of strongly elongated Silver crystals with very well defined terminal faces and one of them doubly terminated. A very nice and fine piece.
Batopilas, Andrés del Río District, Municipio Batopilas, Chihuahua  Mexico

Specimen size: 3.3 × 3 × 1.6 cm = 1.3” × 1.2” × 0.6”

Main crystal size: 2.5 × 0.2 cm = 1.0” × 0.1”

VH47AF0: Botryoidal Austinite (cuprian variety) on a limonite matrix. They are bright, have a deep and uniform green color and are with a white rhombohedrally terminated Calcite crystal. The sample has been analyzed and we’ll send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 5 × 4.5 × 3.2 cm = 2.0” × 1.8” × 1.3”

TA47AA2: Spheroidal aggregates of small but very sharp Austinite crystals that are translucent, bright, with curved edges, and with slightly-bluish green color. They are on limonite matrix, with small Adamite crystals. The sample has been analyzed and we will send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7.7 × 5 × 4.2 cm = 3.0” × 2.0” × 1.7”

ME97Y3: Short arborescent growths of dipyramidal crystals with notable curved faces and edges. They have an intense yellow color and are on a limonite matrix with small Calcite crystals. Of very good quality for the locality.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 8.5 × 5.2 × 3.9 cm = 3.3” × 2.0” × 1.5”

Main crystal size: 0.3 × 0.2 cm = 0.1” × 0.1”

TR27AJ8: Group of very sharp Adamite (manganoan variety) crystals on matrix. The crystals, translucent and very bright, have a zoned pale lilac color that had been famous with this variety at Mapimí and is currently considered a Mexican classic.
The sample is from the Thomas P. Moore collection whose label we will send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 2.4 × 2.2 × 2.1 cm = 0.9” × 0.9” × 0.8”

Main crystal size: 1 × 0.5 cm = 0.4” × 0.2”

TM60L2: The crystal growth of this specimen inside a tight cavity makes it different from other Adamites. Formed by two fan-shaped groups of Adamite crystals, nearly perpendicular, this specimen shows marked triangular terminal faces.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 3.6 × 1.9 × 1 cm = 1.4” × 0.7” × 0.4”

TD76M9: Globular growths and well individualized crystals that have yellow color and an intense luster that contrasts with the dark Limonite matrix.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 9.2 × 7 × 3.9 cm = 3.6” × 2.8” × 1.5”

Main crystal size: 0.4 × 0.1 cm = 0.2” × 0.0”

EP89AJ0: Botryoidal growths of Adamite crystals on a limonite matrix. They are very bright and have a lemon yellow color with greenish shades. The sample is from an ancient European collection whose label we will send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 12.5 × 10 × 2.4 cm = 4.9” × 3.9” × 0.9”

MA54AE9: Dipyramidal Adamite (cuprian variety) crystals with very well defined faces and edges. They have an intense green color with whitish areas, partially coated by colorless Calcite crystals and on a limonite matrix. A Mexican classic, very rare at Mapimí.
Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 6.4 × 5.3 × 3.2 cm = 2.5” × 2.1” × 1.3”

Main crystal size: 0.7 × 0.5 cm = 0.3” × 0.2”

PQ94AH5: A limonite matrix coated by Adamite crystals with very well defined faces and edges, extraordinarily bright and with a very intense and deep color. A very esthetic Mexican classic.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (±1990)

Specimen size: 9.7 × 8.2 × 3.8 cm = 3.8” × 3.2” × 1.5”

Main crystal size: 1 × 0.4 cm = 0.4” × 0.2”

MX9X2: Botryoidal growths of micro-crystals of Duftite, some of them very well defined under a binocular microscope. They are clear green to slightly darker green and their luster varies from bright to dull, with transparent and colorless crystals of Calcite, and they coat a limonite matrix. Due to the absence of previous data about notable samples of Duftite at the Ojuela mine, we consider this find as an interesting "novelty" for this mine. The samples have been analyzed, and we'll send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2012)

Specimen size: 3.5 × 2.9 × 2 cm = 1.4” × 1.1” × 0.8”

MC10X2: Botryoidal growths of micro-crystals of Duftite, some of them very well defined under a binocular microscope. They are clear green to slightly darker green and their luster varies from bright to dull, with transparent and colorless crystals of Calcite, and they coat a limonite matrix. Due to the absence of previous data about notable samples of Duftite at the Ojuela mine, we consider this find as an interesting "novelty" for this mine. The samples have been analyzed, and we'll send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2012)

Specimen size: 3.8 × 3.4 × 1.4 cm = 1.5” × 1.3” × 0.6”

MT12X2: Botryoidal growths of micro-crystals of Duftite, some of them very well defined under a binocular microscope. They are clear green to slightly darker green and their luster varies from bright to dull, with transparent and colorless crystals of Calcite, and they coat a limonite matrix. Due to the absence of previous data about notable samples of Duftite at the Ojuela mine, we consider this find as an interesting "novelty" for this mine. The samples have been analyzed, and we'll send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2012)

Specimen size: 3.8 × 3.7 × 2.2 cm = 1.5” × 1.5” × 0.9”

MV11X2: Botryoidal growths of micro-crystals of Duftite, some of them very well defined under a binocular microscope. They are clear green to slightly darker green and their luster varies from bright to dull, with transparent and colorless crystals of Calcite, and they coat a limonite matrix. Due to the absence of previous data about notable samples of Duftite at the Ojuela mine, we consider this find as an interesting "novelty" for this mine. The samples have been analyzed, and we'll send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2012)

Specimen size: 4.4 × 3.6 × 2.6 cm = 1.7” × 1.4” × 1.0”

MP12X2: Botryoidal growths of micro-crystals of Duftite, some of them very well defined under a binocular microscope. They are clear green to slightly darker green and their luster varies from bright to dull, with transparent and colorless crystals of Calcite, and they coat a limonite matrix. Due to the absence of previous data about notable samples of Duftite at the Ojuela mine, we consider this find as an interesting "novelty" for this mine. The samples have been analyzed, and we'll send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2012)

Specimen size: 4.9 × 4.4 × 2.9 cm = 1.9” × 1.7” × 1.1”

MG11X2: Botryoidal growths of micro-crystals of Duftite, some of them very well defined under a binocular microscope. They are clear green to slightly darker green and their luster varies from bright to dull, with transparent and colorless crystals of Calcite, and they coat a limonite matrix. Due to the absence of previous data about notable samples of Duftite at the Ojuela mine, we consider this find as an interesting "novelty" for this mine. The samples have been analyzed, and we'll send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2012)

Specimen size: 6.4 × 4.3 × 2.6 cm = 2.5” × 1.7” × 1.0”

MJ47AH7: Botryoidal growths of micro-crystals of Duftite, some of them very well defined under a binocular microscope. They are clear green to slightly darker green and their luster varies from bright to dull, with transparent colorless crystals of Calcite, and they coat a limonite matrix. The samples have been analyzed, and we will send a copy of the analysis to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2012)

Specimen size: 13.7 × 9.4 × 4.9 cm = 5.4” × 3.7” × 1.9”

MX13AJ0: Radial groups of very sharp, flattened Hemimorphite crystals with very well defined acute terminations, well differentiated, transparent, very bright and on a limonite matrix.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7.2 × 5.3 × 2 cm = 2.8” × 2.1” × 0.8”

Main crystal size: 1.2 × 0.5 cm = 0.5” × 0.2”

MG6AG3: Radial groups of thin, separate and very sharp laminar crystals. They are transparent and very bright, with very well defined faces and edges and on a limonite matrix.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 8.6 × 5.9 × 3.2 cm = 3.4” × 2.3” × 1.3”

Main crystal size: 1 × 0.5 cm = 0.4” × 0.2”

TM67N0: Fanlike growths of Hemimorphite crystals. They are flattened, transparent with sharp faces and edges. The Hemimorphite is with small clear crystals of Calcite on a matrix of Limonite.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (±1990)

Specimen size: 11.5 × 8.5 × 6 cm = 4.5” × 3.3” × 2.4”

Main crystal size: 1.3 × 0.5 cm = 0.5” × 0.2”

MB76W7: Radial and fanlike groups of flattened crystals. They are translucent and very bright, with a slightly yellowish color zoning. They are on a limonite matrix. The sample is characteristic of finds in the seventies of the last century.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (1970-1980)

Specimen size: 12.8 × 10.5 × 7.2 cm = 5.0” × 4.1” × 2.8”

Main crystal size: 0.8 × 0.3 cm = 0.3” × 0.1”

TH36Y7: Very unusual pineapple-like aggregate. The crystals, showing the forms of a single prism and the pinacoid, have slightly curved edges. They are on limonite matrix and show excellent color and luster.
Ojuela Mine, level 6, San Juan Poniente, Mapimí, Municipio Mapimí, Durango  Mexico (2009)

Specimen size: 5.8 × 4.2 × 2.2 cm = 2.3” × 1.7” × 0.9”

Main crystal size: 0.6 × 0.5 cm = 0.2” × 0.2”

TE16Y7: Prismatic Wulfenite crystals, most of them doubly terminated, with excellent color and good luster. They are on a limonite matrix with very clear green botryoidal Mimetite coatings.
Ojuela Mine, level 6, San Juan Poniente, Mapimí, Municipio Mapimí, Durango  Mexico (2009)

Specimen size: 6.5 × 5.2 × 2.4 ×  cm = 2.6” × 2.0” × 0.9”

Main crystal size: 1.1 × 0.5 cm = 0.4” × 0.2”

TG16AD5: Wulfenite crystals whose shape is between tabular and equant. The crystals, very well defined, have an excellent luster and very intense color. They are on a limonite matrix with small green botryoidal Mimetite.
Ojuela Mine, level 6, San Juan Poniente, Mapimí, Municipio Mapimí, Durango  Mexico (2009)

Specimen size: 6.5 × 6.1 × 3.3 cm = 2.6” × 2.4” × 1.3”

Main crystal size: 0.7 × 0.7 cm = 0.3” × 0.3”

TR76N8: Doubly terminated crystals of Wulfenite with flat pinacoidal terminations. They have excellent color and a curious orange zoning in their center. They are with small green crystals of Mimetite and are on Limonite matrix.
Ojuela Mine, level 6, San Juan Poniente, Mapimí, Municipio Mapimí, Durango  Mexico (2008)

Specimen size: 9.1 × 6.9 × 3.3 cm = 3.6” × 2.7” × 1.3”

Main crystal size: 0.8 × 0.4 cm = 0.3” × 0.2”

MY96AI8: Druse of prismatic Wulfenite crystals formed by a single prism and the flat terminal pinacoid on a matrix of limonite. They have an excellent color and good luster.
Ojuela Mine, level 6, San Juan Poniente, Mapimí, Municipio Mapimí, Durango  Mexico (2008)

Specimen size: 9.4 × 7.2 × 3.8 cm = 3.7” × 2.8” × 1.5”

Main crystal size: 1 × 0.4 cm = 0.4” × 0.2”

TA87X6: A novelty at Tucson 2013. Olive-green botryoidal growths of Mottramite with yellow-orange Wulfenite crystals, bright and with slightly curved edges, consisting of a prism and the terminal pinacoid. We will provide a copy of the analysis of the Mottramite to the buyer of the specimen.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (10/2012)

Specimen size: 7.3 × 7 × 8 cm = 2.9” × 2.8” × 3.1”

Main crystal size: 0.8 × 0.4 cm = 0.3” × 0.2”

TE96V5: Botryoidal aggregate with an almost cylindrical contour and with intense and uniform bluish green color.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2010)

Specimen size: 4.4 × 4.2 × 2.5 cm = 1.7” × 1.7” × 1.0”

TQ66AC5: A bizarre formation of botryoidal Rosasite with an intense and uniform bluish green color and on a limonite matrix. Such a sample is almost an “oldie” because no more have been recovered since this Rosasite was mined in 2010.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2010)

Specimen size: 4.8 × 3.6 × 2.8 cm = 1.9” × 1.4” × 1.1”

TD76AC5: A bizarre formation of botryoidal Rosasite with an intense and uniform bluish green color and on a limonite matrix. Such a sample is almost an “oldie” because no more have been recovered since this Rosasite was mined in 2010.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2010)

Specimen size: 5.6 × 4.4 × 2.5 cm = 2.2” × 1.7” × 1.0”

TF76AC5: A bizarre formation of botryoidal Rosasite with an intense and uniform bluish green color and on a limonite matrix. Such a sample is almost an “oldie” because no more have been recovered since this Rosasite was mined in 2010.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2010)

Specimen size: 6.4 × 4.6 × 2.8 cm = 2.5” × 1.8” × 1.1”

TJ66S2: Botryoidal aggregate of Rosasite of intense greenish-blue on Limonite matrix. A recent discovery at the classic Ojuela mine.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (2010)

Specimen size: 6.4 × 6.2 × 6.3 cm = 2.5” × 2.4” × 2.5”

TZ8AB7: These Mottramites were found in 2011 at the Ojuela mine, where the species never before had been observed. A lot of samples were recovered in that find, but never again so the find was unique. The quality of this sample is quite competitive due to its botryoidal forms which make it comparable to the good quality samples from other localities. We’ll provide a copy of the analysis to the buyer.
Ojuela Mine, level 35, Mapimí, Municipio Mapimí, Durango  Mexico (11/2011)

Specimen size: 6.9 × 5.2 × 3.8 cm = 2.7” × 2.0” × 1.5”

TT96AB7: These Mottramites were found in 2011 at the Ojuela mine, where the species never before had been observed. A lot of samples were recovered in that find, but never again so the find was unique. The quality of this sample is quite competitive due to its botryoidal forms which make it comparable to the good quality samples from other localities. We’ll provide a copy of the analysis to the buyer.
Ojuela Mine, level 35, Mapimí, Municipio Mapimí, Durango  Mexico (11/2011)

Specimen size: 9.5 × 7 × 4.8 cm = 3.7” × 2.8” × 1.9”

TQ91AJ0: Very well defined spheroidal growths of Mottramite on a limonite matrix with a greasy luster and a very deep olive green color. The sample is from the famous find in November, 2011, when Mottramite was firstly noted in a collectible form at Mapimí. We will provide a copy of the analysis to the buyer.
Ojuela Mine, level 35, Mapimí, Municipio Mapimí, Durango  Mexico (11/2011)

Specimen size: 13.4 × 9.6 × 6.4 cm = 5.3” × 3.8” × 2.5”

GD27AK0: Flattened Fluorite crystal, not well formed with curious forms of dissolution, transparent, very bright, with an uniform pale green color and perched in a matrix of Creedite crystals. The sample is from the Casado Margolles collection (number FRM 78) whose record we will send to the buyer.
Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango  Mexico (±2005)

Specimen size: 4.3 × 3.5 × 4.1 cm = 1.7” × 1.4” × 1.6”

Main crystal size: 1.7 × 1.5 cm = 0.7” × 0.6”

TM47AJ3: Very aerial group of Acanthite crystals after Pyrargyrite, with short-prismatic shape and coated by a last phase of Acanthite microcrystals.
The sample is from the Thomas P. Moore collection whose label we will send to the buyer.
Guanajuato, Municipio Guanajuato  Mexico

Specimen size: 2.8 × 1.6 × 1.4 cm = 1.1” × 0.6” × 0.6”

Main crystal size: 0.5 × 0.5 cm = 0.2” × 0.2”

GR96Q5: Very aerial parallel growths of cubic crystals with perfectly defined faces and edges and partially skeletal. The Acanthite has an excellent luster, a characteristic of the samples from this mine.
Rayas Mine, Guanajuato, Municipio Guanajuato  Mexico

Specimen size: 1.9 × 1.6 × 0.7 cm = 0.7” × 0.6” × 0.3”

Main crystal size: 0.8 × 0.7 cm = 0.3” × 0.3”

TV69Z7: Aggregate of very sharp cubic Acanthite crystals that coexist with skeletal and hooked forms of the same mineral. The aggregate, on a Calcite matrix, shows a magnificent contrast between the snowy white Calcite and the luster and relief of the very aerial Acanthite.
Rayas Mine, Guanajuato, Municipio Guanajuato  Mexico (03/2013)

Specimen size: 8.7 × 6.1 × 3.4 cm = 3.4” × 2.4” × 1.3”

Main crystal size: 0.6 × 0.4 cm = 0.2” × 0.2”

TA66AF6: Aggregate of cubo-octahedral Acanthite crystals on Calcite matrix. Some of the crystals are very sharp while others are strongly flattened or show some dissolution on their surfaces.
Cata Mine, Guanajuato, Municipio de Guanajuato  Mexico

Specimen size: 3.4 × 2.8 × 2.4 cm = 1.3” × 1.1” × 0.9”

Main crystal size: 2.2 × 1.6 cm = 0.9” × 0.6”

NV36AJ8: Aggregate of very bright Stibnite crystals that have an uncommon morphology for the species because they are very short, some of them doubly terminated and have very well developed terminal faces. We also note that well crystallized Stibnite is rare at Taxco.
The sample is from the Carlos Prieto collection whose handwritten label we will send to the buyer.
Taxco de Alarcón, Municipio Taxco, Guerrero  Mexico

Specimen size: 5.5 × 3.9 × 1.6 cm = 2.2” × 1.5” × 0.6”

Main crystal size: 0.5 × 0.1 cm = 0.2” × 0.0”

NP63Z6: Aggregates of small rhombohedral Rhodochrosite crystals included in clear Quartz crystals, showing two very well differentiated shades, one of them intense pink and the other dark brown. An excellent sample from a historical locality where Rhodochrosite is rare.
Remedios Mine, Taxco de Alarcón, Municipio Taxco, Guerrero  Mexico (±1990)

Specimen size: 9.3 × 8.8 × 5 cm = 3.7” × 3.5” × 2.0”

TM99J7: An aggregate of acicular crystals taking the appearance of a single prismatic crystal that has a magnificent color that contrasts with the dark Smithsonite matrix that we analyzed. With the specimen we’ll send a copy of the analysis of the Smithsonite.
The specimen has been reviewed and published in the magazine ‘Lapis’ on page 41, volume 33, number 7-8, August 2008.
Flor de Peña Mine, Lampazos (Lampazos de Naranjo), Municipio Lampazos (Lampazos de Naranjo), Nuevo Leon  Mexico

Specimen size: 7.3 × 6.5 × 5.9 cm = 2.9” × 2.6” × 2.3”

Main crystal size: 1.5 × 0.3 cm = 0.6” × 0.1”

TP66AJ8: Aerial growth of dodecahedral Acanthite crystals, a very unusual form for the species, some of them with “window” growths and partially coated by small Pyrite crystals. The sample has been analyzed, the analytic results indicating a high selenium content. We will send a copy of the analysis to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (2018)

Specimen size: 6.5 × 4.5 × 3.4 cm = 2.6” × 1.8” × 1.3”

TA48AH1: A novelty at Tucson 2018. Very aerial growth of very sharp octahedral Acanthite crystals with epigenic Chalcopyrite and on matrix with Quartz. The sample has been analyzed and we’ll send a copy of its analysis to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (01/2018)

Specimen size: 4.4 × 2.5 × 2.9 cm = 1.7” × 1.0” × 1.1”

Main crystal size: 1.6 × 1.4 cm = 0.6” × 0.6”

TC66AJ8: Spheroidal aggregates of very sharp Miargyrite crystals with a good size for the species and they are very bright. They are on matrix with Quartz and Chalcopyrite crystals. The sample, of great quality, is from a recent find in the San José mine and it has been analyzed. We will send a copy of the analysis to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (2018)

Specimen size: 5.8 × 4.6 × 2.8 cm = 2.3” × 1.8” × 1.1”

Main crystal size: 0.4 × 0.3 cm = 0.2” × 0.1”

TA54AI7: A group of Miargyrite crystals with a good size for the species, with unusually well defined faces and edges, fine growth striations and very bright. An extraordinary miniature that has been analyzed. We’ll send a copy of the analysis to the buyer.
The sample has been referenced in the 'Mineral Up' magazine (2018/2, pages 36-37).
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (01/2018)

Specimen size: 2.2 × 2.1 × 1.5 cm = 0.9” × 0.8” × 0.6”

Main crystal size: 1 × 0.4 cm = 0.4” × 0.2”

TP50AH1: A novelty at Tucson 2018. Group of Miargyrite crystals, on matrix, with an extraordinary definition for the species. They are very bright and have fine growth striations. The sample has been analyzed and we’ll send a copy of its analysis to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (01/2018)

Specimen size: 2.6 × 2.5 × 1.4 cm = 1.0” × 1.0” × 0.6”

Main crystal size: 0.3 × 0.2 cm = 0.1” × 0.1”

TT30AH1: A novelty at Tucson 2018. Translucent Pyrargyrite crystal with intense reddish reflections and on a Quartz matrix with Miargyrite crystals that have an extraordinary definition for the species. They are very bright. The sample has been analyzed and we’ll send a copy of its analysis to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (01/2018)

Specimen size: 3.2 × 2 × 1.8 cm = 1.3” × 0.8” × 0.7”

Main crystal size: 0.3 × 0.2 cm = 0.1” × 0.1”

TV89AJ3: Group of Pyrargyrite crystals with parallel growths, one of them clearly dominant, with very well defined faces and edges and with good terminal faces. They are translucent, extraordinarily bright, with vivid red reflections and are on a Quartz matrix.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (2018)

Specimen size: 1.4 × 1.3 × 1.6 cm = 0.6” × 0.5” × 0.6”

Main crystal size: 1.2 × 0.4 cm = 0.5” × 0.2”

TK49AI5: Aggregate of crystals, on a little matrix, with a prismatic shape and flat terminations that are very bright, translucent and have reddish reflections. It is from a locality that is very new in the mineral world and that is producing very good silver sulphosalts. The sample has been analyzed and we’ll send a copy of the analysis to the buyer.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 37 of the 2018/02 edition.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (01/2018)

Specimen size: 2.2 × 1.2 × 1.2 cm = 0.9” × 0.5” × 0.5”

EV97AI8: Group of very well defined and bright Pyrargyrite crystals partially coated by white Quartz and small but very well defined Miargyrite crystals. The Miargyrite has been analyzed. An excellent miniature. We will send a copy of the analysis to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (01/2018)

Specimen size: 2.5 × 2 × 1.2 cm = 1.0” × 0.8” × 0.5”

Main crystal size: 1.7 × 0.3 cm = 0.7” × 0.1”

TV37AH1: A novelty at Tucson 2018. Single translucent Pyrargyrite crystal with parallel growths, fine striations and intense reddish reflections. On matrix with small white Quartz crystals. The sample has been analyzed and we’ll send a copy of its analysis to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (01/2018)

Specimen size: 5.3 × 2.7 × 2.4 cm = 2.1” × 1.1” × 0.9”

Main crystal size: 1.4 × 0.8 cm = 0.6” × 0.3”

TC11Z6: Group, on a Chalcopyrite matrix, of complex Tennantite crystals with a tetrahedral shape and very rich with faces, very bright and partially coated by small Quartz crystals. The analysis of the crystals indicates that they are basically silvery Tennantite, but the presence of other silver minerals such as Miargyrite, Pyrargyrite or Freibergite has been detected. The sample is from a Mexican zone that is scarcely known in mineralogical circles, so we indicate the locality as approximate because we don’t know if all the samples are from a single mine, different mines, or from a wider mining area. We will send a copy of the analysis of the Tennantite to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (2013)

Specimen size: 2.9 × 2.6 × 1.1 cm = 1.1” × 1.0” × 0.4”

Main crystal size: 0.3 × 0.3 cm = 0.1” × 0.1”

TD60Z6: Group, on a Chalcopyrite matrix, of complex Tennantite crystals with a tetrahedral shape and very rich with faces, very bright and partially coated by small Quartz crystals. The analysis of the crystals indicates that they are basically silvery Tennantite, but the presence of other silver minerals such as Miargyrite, Pyrargyrite or Freibergite has been detected. The sample is from a Mexican zone that is scarcely known in mineralogical circles, so we indicate the locality as approximate because we don’t know if all the samples are from a single mine, different mines, or from a wider mining area. We will send a copy of the analysis of the Tennantite to the buyer.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (2013)

Specimen size: 5.7 × 4.7 × 3.5 cm = 2.2” × 1.9” × 1.4”

Main crystal size: 0.4 × 0.3 cm = 0.2” × 0.1”

DA66AI7: Group of Topaz crystals on a matrix of volcanic rock. They have very well defined faces and edges and pinacoidal terminations and they are transparent, bright and have color zoning, deeper and more concentrated in the terminal areas. A Mexican classic. The sample is from the Daunis collection whose label we’ll send to the buyer.
Tepetate, Municipio Villa de Arriaga, San Luis Potosí  Mexico

Specimen size: 3.2 × 2.4 × 2.1 cm = 1.3” × 0.9” × 0.8”

Main crystal size: 0.9 × 0.5 cm = 0.4” × 0.2”

MD87AH7: Stibiconite pseudomorph after a previous Stibnite crystal with an elongated prismatic shape, with a double termination and partially coated by small Calcite crystals. Because the definitive species designation is still under discussion, we prefer to use the classic name Stibiconite for these samples, a Mexican classic.
Real de Catorce (Catorce), Catorce Mountains, Municipio Catorce, San Luis Potosí  Mexico

Specimen size: 19 × 2 × 1.4 cm = 7.5” × 0.8” × 0.6”

TR10Q8: Group of sharp crystals, pseudomorphous after Stibnite, with very well defined faces and edges. The locality is considered typical for the species.
It is noted as a donation of A.B. Stiles to the Mineralogical Museum of the University of Delaware.
Real de Catorce (Catorce), Catorce Mountains, Municipio Catorce, San Luis Potosí  Mexico

Specimen size: 23 × 5 × 5 cm = 9.1” × 2.0” × 2.0”

Main crystal size: 22 × 3.6 cm = 8.7” × 1.4”

TB69AF1: Flattened Azurite crystals that are very aerial on the matrix, with very well defined faces and edges and having the brilliant luster and famous rich blue color (“electric blue”) typical of the best samples from Milpillas. With small fibrous Malachite coatings.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 3.7 × 3.3 × 2.1 cm = 1.5” × 1.3” × 0.8”

Main crystal size: 2.3 × 1 cm = 0.9” × 0.4”

TC50X5: Group of crystals, one of them clearly dominant, with equant shape and polycrystalline growths on their faces. They are very well defined, are very bright and have the vivid blue color (electric blue) that has made the Azurites from this locality famous.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2011-2012)

Specimen size: 4 × 3 × 2.9 cm = 1.6” × 1.2” × 1.1”

TR67Z1: Aggregate of complex crystals with very well defined forms, and with polycrystalline surfaces. They are translucent and have the extraordinary deep blue color (“electric blue”) typical of the best samples from Milpillas. On matrix, with small crystals of Malachite pseudomorphous after Azurite.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2011-2012)

Specimen size: 4.1 × 3.9 × 2.7 cm = 1.6” × 1.5” × 1.1”

TN9AC9: Aggregate, on matrix, of lenticular Azurite crystals, with very well defined faces and edges and having the very intense luster from Milpillas and the famous rich blue color (“electric blue”) typical of the best samples from Milpillas. With small fibrous malachite coatings.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2013)

Specimen size: 4.3 × 3.7 × 2.8 cm = 1.7” × 1.5” × 1.1”

Main crystal size: 2.8 × 1.6 cm = 1.1” × 0.6”

TV27AB4: Aggregate, on matrix, of complex Azurite crystals, two of them clearly dominant, with polycrystalline surfaces and very well defined faces and edges, a deep and vivid blue color (“electric blue”), transparent on the edges and a very intense luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2013)

Specimen size: 4.4 × 2.7 × 1.8 cm = 1.7” × 1.1” × 0.7”

Main crystal size: 1.7 × 1.4 cm = 0.7” × 0.6”

TA99W9: Very aerial group of complex crystals that have very well defined faces and edges. They are translucent and have an extraordinary deep blue color (electric blue) typical of the best samples from Milpillas. They have vivid reflections and transparencies under a strong light.
Milpillas Mine, 1100 level, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (10/2011)

Specimen size: 4.4 × 2.8 × 2.2 cm = 1.7” × 1.1” × 0.9”

Main crystal size: 1.2 × 1 cm = 0.5” × 0.4”

TF36AD0: Polycrystalline growth of crystals, one of them clearly dominant, very rich in faces and on matrix. The crystals are very bright and show the extraordinary deep blue color (electric blue) that has made the Azurites from this locality famous.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (04/2015)

Specimen size: 4.5 × 3.2 × 1.8 cm = 1.8” × 1.3” × 0.7”

Main crystal size: 2.5 × 2.2 cm = 1.0” × 0.9”

TP48AB4: Aggregate, on matrix, of complex Azurite crystals, with very well defined faces and edges and polycrystalline surfaces. The crystals have a deep and vivid blue color (“electric blue”), transparent on the edges and a very intense luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2013)

Specimen size: 4.9 × 3.5 × 2.5 cm = 1.9” × 1.4” × 1.0”

Main crystal size: 1 × 0.8 cm = 0.4” × 0.3”

TR71AE7: Very aerial aggregate, on matrix, of thick lenticular crystals with very well defined faces and edges, with slight curvatures and a very intense luster, with transparencies on the edges and the famous rich blue color (“electric blue”) typical of the best samples from Milpillas. The Azurite crystals are partially coated by balls of fibrous Malachite that has a silky luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2013)

Specimen size: 5 × 2.9 × 2.5 cm = 2.0” × 1.1” × 1.0”

Main crystal size: 2.4 × 1.4 cm = 0.9” × 0.6”

TE21AC9: Aggregate, on matrix, of prismatic, flattened and doubly terminated Azurite crystals, with very well defined faces and edges and having the very intense luster and the famous rich blue color (“electric blue”) typical of the best samples from Milpillas. Coated by small fibrous Malachite.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2011-2012)

Specimen size: 5 × 4.2 × 2.5 cm = 2.0” × 1.7” × 1.0”

Main crystal size: 2.5 × 1.8 cm = 1.0” × 0.7”

TD50Q0: Aggregate of equidimensional crystals of Azurite of very deep color and intense luster, on matrix with Malachite. Some faces show a beginning of altering to Malachite but they haven’t lost their luster.

Milpillas Mine, 1100 level, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (08/2009)

Specimen size: 5.1 ×  3 × 2.8 cm = 2.0” × 1.2” × 1.1”

Main crystal size: 1.3 × 0.9 cm = 0.5” × 0.4”

TR98V4: Parallel aggregates of Azurite crystals with very well defined faces and edges, very bright and with a very deep color. They are on a base of fibrous crystals of Malachite.
Milpillas Mine, 1100 level, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (05/2010)

Specimen size: 5.3 × 4.4 × 2.7 cm = 2.1” × 1.7” × 1.1”

Main crystal size: 1.7 × 1.6 cm = 0.7” × 0.6”

TD47V2: Esthetic group of sharp, flattened, crystals of Azurite with very well defined faces and edges. They are partially pseudomorphed by Malachite, but they conserve a lot of the pristine transparency and intensity of color of the Azurite.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2009)

Specimen size: 5.4 × 3.2 × 1.4 cm = 2.1” × 1.3” × 0.6”

Main crystal size: 4 × 2.1 cm = 1.6” × 0.8”

TB71AJ3: Extraordinary group of crystals, one of them clearly dominant, very sharp with vivid transparencies, very intense bright and with the famous vivid and deep blue color (“electric blue”) typical of the best samples from the locality. With small coatings of fibrous Malachite.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2019, page 78
Milpillas Mine, 1140 level, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2010)

Specimen size: 6.2 × 2.4 × 2.8 cm = 2.4” × 0.9” × 1.1”

Main crystal size: 6.2 × 2.3 cm = 2.4” × 0.9”

TP88AI8: Group of very well defined Azurite crystals with slightly curved faces and edges, bright with a very deep and vivid color and with small Malachite growths on the surfaces of the faces. Different from other Azurites at this locality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico

Specimen size: 6.4 × 4.1 × 3.2 cm = 2.5” × 1.6” × 1.3”

TA10AE2: Aggregate of thick tabular crystals with very well defined faces and edges, small curvatures and a deep blue color (“electric blue”) typical of the best Milpillas samples, nearly transparent on the edges and an intense luster. The aggregate is partially coated by fibrous Malachite crystals with a silky luster. A sample of great character.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09/2013)

Specimen size: 7.6 × 7.5 × 1.8 cm = 3.0” × 3.0” × 0.7”

Main crystal size: 2.2 × 1.1 cm = 0.9” × 0.4”

TG27AF8: Elongated, flattened and doubly terminated Azurite crystals, very rich in faces, extraordinarily bright with intense reflections and transparences under a bright light, and with the deep and vivid color (“electric blue”) typical of the best samples from Milpillas. The sample is of the best possible quality, both for the species and for the locality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 9.2 × 6.6 × 4.1 cm = 3.6” × 2.6” × 1.6”

Main crystal size: 3.2 × 1.2 cm = 1.3” × 0.5”

TT27AI4: Aggregate of very sharp Azurite crystals, one of them clearly dominant. These crystals, between translucent and transparent, are very bright and have the extraordinarily deep and vivid blue color (“electric blue”) typical of the best samples from Milpillas and they are implanted on a rough Malachite band coating the matrix. The esthetic blue-green contrast between Azurite and Malachite is not too common at Milpillas.

Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 9.9 × 6.7 × 4.2 cm = 3.9” × 2.6” × 1.7”

Main crystal size: 2.7 × 1.3 cm = 1.1” × 0.5”

TR96AH4: Very sharp flattened single translucent Azurite crystal with very well defined faces and edges, very bright with an extraordinary deep blue (electric blue) color typical of the best samples from Milpillas. The crystal is implanted on a rock matrix coated by acicular Brochantite crystals, rarely associated with Azurite.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)

Specimen size: 10.7 × 10.1 × 5.3 cm = 4.2” × 4.0” × 2.1”

Main crystal size: 2.3 × 1.2 cm = 0.9” × 0.5”

TD87AF0: A silky mass of flattened Malachite crystals, pseudomorphous after Azurite, with very well defined faces and edges. More elegant than usual.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico

Specimen size: 4.2 × 4 × 4.7 cm = 1.7” × 1.6” × 1.9”

Main crystal size: 4.2 × 3.5 cm = 1.7” × 1.4”

TQ69AJ2: Parallel growth of two aerial, flattened Malachites after Azurite crystals with very well defined faces and edges and on a botryoidal Goethite matrix.
This specimen was published on the Mineralogical Record´s web page, in the ‘What's New’ section, report 52, April 13, 2019 edition, page 6
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09/2019)

Specimen size: 4.4 × 4 × 4.2 cm = 1.7” × 1.6” × 1.7”

Main crystal size: 3.4 × 2.5 cm = 1.3” × 1.0”

TA67X3: Aggregate of Malachite crystals, pseudomorphous after Azurite, which have very well defined faces and curvatures. They have a very deep color and an excellent luster for the species.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2009)

Specimen size: 5.6 × 4.3 × 3.3 cm = 2.2” × 1.7” × 1.3”

Main crystal size: 3.4 × 1.3 cm = 1.3” × 0.5”

TQ17V2: Aerial group of Malachite pseudomorphous after Azurite crystals, with rounded faces and edges, a very deep green color and silky luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2009)

Specimen size: 5.7 × 4.4 × 3.2 cm = 2.2” × 1.7” × 1.3”

Main crystal size: 2.2 × 0.9 cm = 0.9” × 0.4”

TB47AA2: Very aerial group of Malachite pseudomorphous after Azurite crystals, with slightly rounded faces and edges, a very deep green color and a silky luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico

Specimen size: 6.7 × 4.3 × 2.2 cm = 2.6” × 1.7” × 0.9”

Main crystal size: 3 × 1.4 cm = 1.2” × 0.6”

TF49Z0: Aggregate of thick and large crystals, some of them doubly terminated, of Malachite pseudomorphous after Azurite. At the bottom are fan-like aggregates of fibrous crystals with a clearer color.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2009)

Specimen size: 7.7 × 5.7 × 7.4 cm = 3.0” × 2.2” × 2.9”

Main crystal size: 4 × 1.8 cm = 1.6” × 0.7”

TR59AH6: Group of Malachite crystals pseudomorphous after Azurite, with very well defined faces and edges, some of them doubly terminated and with a velvety aspect on the surface of their faces.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2014)

Specimen size: 8.6 × 7 × 3.6 cm = 3.4” × 2.8” × 1.4”

Main crystal size: 2.5 × 2 cm = 1.0” × 0.8”

TR66AF1: Drusy bladed Malachite crystals, pseudomorphous after Azurite, forming rosettes which have very well defined faces and curvatures. They have a very deep color and a silky luster.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2017, page 106
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (± 2014)

Specimen size: 12.7 × 7.3 × 3 cm = 5.0” × 2.9” × 1.2”

Main crystal size: 3.1 × 3.1 cm = 1.2” × 1.2”

TN22AB2: A novelty at Tucson 2015. Flattened crystals pseudomorphous after Azurite, coated by fibrous aggregates of the same Malachite, and implanted on an unusual matrix: a very bright botryoidal Goethite.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09-10/2014)

Specimen size: 9.3 × 7.5 × 7.7 cm = 3.7” × 3.0” × 3.0”

Main crystal size: 2.5 × 1.7 cm = 1.0” × 0.7”

TE22AE7: Aggregate of short prismatic Malachite crystals pseudomorphous after Azurite. They are very well defined, have a silky luster on their faces, are partially coated by colorless and very bright small Baryte crystals and are on a botryoidal Goethite matrix, which is very unusual for the locality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09-10/2014)

Specimen size: 11.7 × 9.2 × 4.8 cm = 4.6” × 3.6” × 1.9”

Main crystal size: 3.2 × 2 cm = 1.3” × 0.8”

TJ50AC8: Short prismatic Malachite pseudomorphs after Azurite crystals, some of them doubly terminated. They are on a Goethite matrix with small laminar, colorless, transparent and very bright Baryte crystals.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09-10/2014)

Specimen size: 12 × 9.2 × 3.3 cm = 4.7” × 3.6” × 1.3”

Main crystal size: 2.8 × 1.5 cm = 1.1” × 0.6”

TA91AB3: A novelty at Tucson 2015. Aggregate, on a rocky matrix, of thick Malachite crystals pseudomorphous after Azurite. They have faces with a fibrous aspect and silky luster and are partially coated by laminar, colorless, clear and very bright Baryte crystals.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (09-10/2014)

Specimen size: 12.3 × 9.1 × 3.8 cm = 4.8” × 3.6” × 1.5”

Main crystal size: 2.8 × 2.5 cm = 1.1” × 1.0”

TH88AE9: Aggregate of elongated idiomorphic crystals with very well defined faces and edges and sharp chisel-like terminations. Their definition, crystal size, as well as their color and luster and, in general, very high quality, make them the world's best for this species.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 3.6 × 2.5 × 1 cm = 1.4” × 1.0” × 0.4”

Main crystal size: 1.2 × 0.5 cm = 0.5” × 0.2”

TL79AB4: A novelty at Tucson 2015. Fibrous Brochantite is very well known at the Milpillas mine but this sample has aggregates of elongated idiomorphic crystals, one of them clearly isolated and doubly terminated, with very well defined faces and edges and chisel like terminations. In our opinion, the world's best for the species for their definition, crystal size, as well as their color and luster and, in general, very high quality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 9.5 × 6.3 × 3.3 cm = 3.7” × 2.5” × 1.3”

Main crystal size: 1 × 0.4 cm = 0.4” × 0.2”

TC93AJ4: Very aerial group of sharp flattened crystals that are very bright and with a deep green color. The Milpillas Volborthites are without doubt the world's best for their luster, shape, good contrast with the white clay matrix and crystal size, so all together these are a new standard for this species.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 3.2 × 3 × 1.5 cm = 1.3” × 1.2” × 0.6”

EV67AC1: Volborthite was the new sensation in the Tucson Show 2015 as well as in Ste. Marie, but the number of them seems to be somewhat limited.
The Milpillas ones are without doubt the world's best for their luster, shape, good contrast with the white clay matrix and the crystal size of the best ones, so all together these are a new standard for this species. We are proud to offer this one which has a very reasonable balance quality / price.
Milpillas Mine, level 26, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (04/2015)

Specimen size: 1.3 × 1 × 0.9 cm = 0.5” × 0.4” × 0.4”

TE67AJ2: Rosette aggregate of flattened and very well defined Volborthite crystals that are bright with a deep olive green color. With a very sharp, doubly terminated Azurite crystal on the Volborthite that we must consider a rarity. The Milpillas Volborthite samples are probably the world's best for their quality, luster, and crystal size, and they are considered a new standard for this species. An excellent miniature, different from other well-known Volborthites.
Milpillas Mine, level 26, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (04/2015)

Specimen size: 3 × 2.2 × 1.9 cm = 1.2” × 0.9” × 0.7”

Main crystal size: 1 × 0.3 cm = 0.4” × 0.1”

TR96AD6: A novelty at Tucson 2016. Polycrystalline aggregate of Cuprite crystals showing the dominant octahedron beveled by the dodecahedron, with very well defined faces and edges. The crystals, on a rocky matrix with massive Cuprite, are translucent and have a very deep red color that is partially masked by their extraordinary luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2015-01/2016)

Specimen size: 2.1 × 1 × 1.1 cm = 0.8” × 0.4” × 0.4”

Main crystal size: 1 × 0.7 cm = 0.4” × 0.3”

TA49AH5: Polycrystalline surface of crystals with the dominant octahedron, but also with the faces of the dodecahedron and the cube. The crystals are translucent, very bright with a vivid red color and are on matrix. Of the best quality for that mine.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2012-2013)

Specimen size: 3.3 × 3.1 × 2.6 cm = 1.3” × 1.2” × 1.0”

Main crystal size: 1 × 0.4 cm = 0.4” × 0.2”

TK70AE9: Cuprite crystals formed by a dominant cube and octahedron, and beveled by the dodecahedron with some hoppered faces and, in general, with very well defined faces and edges. The crystals, on a rocky matrix, are translucent and have a very deep red color that is partially masked by their extraordinary luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 5 × 3.4 × 1.7 cm = 2.0” × 1.3” × 0.7”

Main crystal size: 0.8 × 0.8 cm = 0.3” × 0.3”

TR99AC9: A novelty at Tucson 2016. Very bright and sharp Cuprite crystals from recent finds at the Milpillas mine.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2015-01/2016)

Specimen size: 5.6 × 5 × 2.5 cm = 2.2” × 2.0” × 1.0”

Main crystal size: 0.9 × 0.6 cm = 0.4” × 0.2”

TC16AH5: Polycrystalline surface of crystals with the dominant octahedron, but also with the faces of the dodecahedron and the cube. The crystals are translucent, very bright with a vivid red color and are on matrix. Of the best quality for that mine.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2012-2013)

Specimen size: 6.4 × 3.7 × 2.3 cm = 2.5” × 1.5” × 0.9”

Main crystal size: 1 × 0.7 cm = 0.4” × 0.3”

TB16AH5: Polycrystalline surface of crystals with the dominant octahedron, but also with the faces of the dodecahedron and the cube. The crystals are translucent, very bright with a vivid red color and are on matrix, with white fibrous Dickite aggregates. Of the best quality for that mine.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2012-2013)

Specimen size: 7 × 4.8 × 1.8 cm = 2.8” × 1.9” × 0.7”

Main crystal size: 0.8 × 0.6 cm = 0.3” × 0.2”

TD66AH5: Polycrystalline surface of crystals with the dominant octahedron, but also with the faces of the dodecahedron and the cube. The crystals are translucent, very bright with a vivid red color and are on matrix. Of the best quality for that mine.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2012-2013)

Specimen size: 7.1 × 6.2 × 2.8 cm = 2.8” × 2.4” × 1.1”

Main crystal size: 2.4 × 1.2 cm = 0.9” × 0.5”

TC26AJ4: Aggregate of crystals whose shape is between tapered and fibrous, very well defined for this very uncommon vanadate, with a yellowish-green color and on matrix. A rarity from Milpillas. The sample has been analyzed and we will send a copy of this analysis to the buyer.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 0.8 × 0.8 × 0.3 cm = 0.3” × 0.3” × 0.1”

TZ6AJ4: Aggregate of crystals whose shape is between tapered and fibrous, very well defined for this very uncommon vanadate, with a yellowish-green color and on matrix with Malachite. A rarity from Milpillas. The sample has been analyzed and we will send a copy of this analysis to the buyer.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 1 × 0.6 × 0.2 cm = 0.4” × 0.2” × 0.1”

TX36AJ4: Aggregate of crystals whose shape is between tapered and fibrous, very well defined for this very uncommon vanadate, with a yellowish-green color and on matrix. A rarity from Milpillas. The sample has been analyzed and we will send a copy of this analysis to the buyer.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 1 × 0.7 × 0.6 cm = 0.4” × 0.3” × 0.2”

TM26AJ4: Aggregate of crystals whose shape is between tapered and fibrous, very well defined for this very uncommon vanadate, with a yellowish-green color and on matrix. A rarity from Milpillas. The sample has been analyzed and we will send a copy of this analysis to the buyer.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 1.1 × 0.6 × 0.5 cm = 0.4” × 0.2” × 0.2”

TQ46AD0: A novelty at Tucson 2016. Aggregate of fibrous crystals, very well defined for this unusual vanadate, with a yellowish-green color and on matrix. A new rarity from Milpillas. The sample has been analyzed and we’ll send a copy of this analysis to the buyer.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 1.1 × 1 × 0.9 cm = 0.4” × 0.4” × 0.4”

TM47AD1: A novelty at Tucson 2016. Very sharp platy crystals, transparent, very bright and with a reddish color probably due to Hematite inclusions. They are on a Goethite matrix and are very unusual for the locality.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (06/2015)

Specimen size: 12 × 7.2 × 1.7 cm = 4.7” × 2.8” × 0.7”

Main crystal size: 0.9 × 0.4 cm = 0.4” × 0.2”

MG88AE9: Dendritic growth of very bright laminar forms, on a small Quartz matrix. The sample is an excellent thumbnail from a locality that is practically unknown for collectible gold samples.
La Ciénega, Municipio de Pitiquito, Sonora  Mexico

Specimen size: 1.7 × 1.4 × 1.2 cm = 0.7” × 0.6” × 0.5”

GZ87R0: Group of crystals that combine the forms of a dominant trapezohedron with the dodecahedron. The crystals have a very deep color, green with slightly brownish shades. They are very bright and are partially coating a matrix of volcanic rock. The locality is very unusual for the species.
Cerro de la Concordia, Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 8.2 × 6 × 4.9 cm = 3.2” × 2.4” × 1.9”

Main crystal size: 0.6 × 0.6 cm = 0.2” × 0.2”

MT13AE2: Aggregate of prismatic crystals with a very well defined hexagonal shapes, excellent terminations, very neat and bright, and partially coated by small Quartz crystals. A little Mexican jewel.
Proaño Mine, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 2.3 × 2 × 1.4 cm = 0.9” × 0.8” × 0.6”

Main crystal size: 0.6 × 0.3 cm = 0.2” × 0.1”

TT14AJ3: Aerial Pyrargyrite crystal with very well defined faces and edges and excellent terminal forms. It is translucent with vivid red reflections and implanted on a matrix of scalenohedral Calcite crystals.
Proaño Mine, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico (2018)

Specimen size: 2.8 × 1.7 × 2.2 cm = 1.1” × 0.7” × 0.9”

Main crystal size: 0.7 × 0.6 cm = 0.3” × 0.2”

TF49AI8: Group of very bright Pyrargyrite crystals with very well defined faces and edges, with an associated group of very sharp small Polybasite crystals and on a matrix of Quartz crystals.
Proaño Mine, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 8.5 × 7.4 × 3.4 cm = 3.3” × 2.9” × 1.3”

TB90AE8: Aerial and very elongated cubo-octahedral crystal, with very well defined and bright faces and edges and window growths on some of the faces.
Proaño Mine, San Carlos vein, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico (2016)

Specimen size: 3.9 × 1.4 × 1.8 cm = 1.5” × 0.6” × 0.7”

Main crystal size: 2 × 1.1 cm = 0.8” × 0.4”

TA99E0: An excellent, really shiny Stephanite that is well positioned on the matrix and has complex crystal forms. There are also some large crystals of Stephanite on the rear of the specimen. There are no dings or scratches anywhere on it and there is a small amount of Pyrite matrix. As we often do, we will send the buyer of this one a copy of the analysis of this tempting specimen.
San Luis shaft, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 3 × 1.6 × 1.3 cm = 1.2” × 0.6” × 0.5”

Main crystal size: 1.1 × 0.6 cm = 0.4” × 0.2”

TJ14Z2: A novelty at Tucson 2014. These Opals (variety hyalite) appeared for first time during the Tucson Show and in addition to the fact that they are gemmy and quite aesthetic, standing up on their matrix, their main feature is that they fluoresce even in daylight! In fact, they fluoresce in almost all kinds of light, neon light, LED light, daylight and, of course,UV light. The only light with which they don't react is incandescent. As they are so new the locality is still very vague, sorry for that, but we are sure that time will clarify the locality as well as the reason why they fluoresce so strongly.
Zacatecas  Mexico (2013-2014)

Specimen size: 3.5 × 2.6 × 1.6 cm = 1.4” × 1.0” × 0.6”

TE28AA2: A novelty at Tucson 2014. Transparent botryoidal growths on matrix. This kind of Opal (variety hyalite), in addition to the fact that it is gemmy and quite aesthetic standing up on its matrix, has the extraordinary property of fluorescing in daylight! In fact, it fluoresces in almost all types of light, neon light, LED light, daylight and, of course, UV light. The only light with which it doesn’t react is incandescent. As these are so new the locality is still very vague, sorry for that, but we are sure that time will clarify the locality as well as the reason why they fluoresce so strongly.
Zacatecas  Mexico (2013-2014)

Specimen size: 4.6 × 4.2 × 2.4 cm = 1.8” × 1.7” × 0.9”

TT16Z6: A novelty at Tucson 2014. Transparent botryoidal growth on matrix. This kind of Opal (variety hyalite), in addition to the fact that it is gemmy and quite aesthetic, standing up on its matrix, has the extraordinary property of fluorescing in daylight! In fact, it fluoresces in almost all types of light, neon light, LED light, daylight and, of course, UV light. The only light with which it doesn’t react is incandescent. As they are so new the locality is still very vague, sorry for that, but we are sure that time will clarify the locality as well as the reason why they fluoresce so strongly.
Zacatecas  Mexico (2013-2014)

Specimen size: 4.8 × 2.5 × 3.7 cm = 1.9” × 1.0” × 1.5”

TB99Z3: A novelty at Tucson 2014. These Opals (variety hyalite), in addition to the fact that they are gemmy and quite aesthetic, standing up on their matrix, they have the extraordinary property of fluorescing in daylight! In fact, they fluoresce in almost all types of light, neon light, LED light, daylight and, of course, UV light. The only light with which they don't react is incandescent. As they are so new the locality is still very vague, sorry for that, but we are sure that time will clarify the locality as well as the reason why they fluoresce so strongly
Zacatecas  Mexico (2013-2014)

Specimen size: 6.5 × 4.2 × 3.3 cm = 2.6” × 1.7” × 1.3”