Mineral Specimens - page 2
Mexico - Canada

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 = 1.93” × 1.50” × 0.91”

Main crystal size: 0.3 × 0.3 cm = 0.12” × 0.12”

TJ13S7: Aggregates on matrix of Chrysocolla pseudomorphous after small cubic crystals of Boleite. This rare pseudomorph was discovered 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 = 1.10” × 1.02” × 0.67”

Main crystal size: 0.5 × 0.4 cm = 0.20” × 0.16”

EF86AM2: Group of very sharp tabular Wulfenite crystals on a limonite matrix. Crystals are transparent, with good luster and an intense orange color, with geometric color zoning very evident on the edges.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 4.4 × 3.5 × 2.7 cm = 1.73” × 1.38” × 1.06”

Main crystal size: 1 × 0.8 cm = 0.39” × 0.31”

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 = 3.86” × 3.35” × 2.72”

Main crystal size: 1.1 × 1 cm = 0.43” × 0.39”

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 = 3.15” × 2.76” × 2.24”

Main crystal size: 2.6 × 2.4 cm = 1.02” × 0.94”

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 = 4.53” × 2.48” × 2.36”

Main crystal size: 2.5 × 1.9 cm = 0.98” × 0.75”

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 = 6.10” × 4.09” × 2.52”

Main crystal size: 6 × 4.4 cm = 2.36” × 1.73”

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 = 5.51” × 3.03” × 1.42”

TZ260AL4: Smithsonite pseudomorphic growths after scalenohedral Calcite crystals. The specimen shows growth of a successive series of layers that indicate that the Calcite was partially replaced in a first phase and finally ended up being totally replaced by Smithsonite.
San Antonio Mine (San Antonio el Grande Mine), level 8, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (04/2013)

Specimen size: 3.2 × 2.4 × 2.4 cm = 1.26” × 0.94” × 0.94”

Main crystal size: 2.4 × 1.2 cm = 0.94” × 0.47”

TG66AL4: Smithsonite as pseudomorphic growths after scalenohedral Calcite crystals. The specimen shows the growth of a successive series of layers that indicate that the Calcite was partially replaced in a first phase, then later ended up being totally replaced by Smithsonite, and with Calcite crystallizing again in a final phase, in the form of small white rhombohedral crystals.
San Antonio Mine (San Antonio el Grande Mine), level 8, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (04/2013)

Specimen size: 4.4 × 3.8 × 3.4 cm = 1.73” × 1.50” × 1.34”

Main crystal size: 4.1 × 2.4 cm = 1.61” × 0.94”

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 = 3.35” × 2.48” × 1.38”

Main crystal size: 2.6 × 1.5 cm = 1.02” × 0.59”

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 = 1.14” × 0.87” × 0.63”

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 = 1.89” × 1.50” × 1.46”

TB26AL6: Botryoidal growths of small rhombohedral Rhodochrosite crystals, very lustrous and with a vivid and uniform pink color, which cover a botryoidal Hisingerite-Neotocite (Series) matrix.
The sample comes from the Kay Robertson collection (no. 11979) whose label we will send to the buyer.
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 6.2 × 5.8 × 3.6 cm = 2.44” × 2.28” × 1.42”

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 = 1.54” × 1.14” × 0.91”

Main crystal size: 0.6 × 0.5 cm = 0.24” × 0.20”

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 = 1.93” × 1.54” × 1.10”

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 = 3.70” × 3.19” × 2.01”

Main crystal size: 0.7 × 0.6 cm = 0.28” × 0.24”

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 = 4.21” × 3.46” × 2.20”

Main crystal size: 3 × 1.5 cm = 1.18” × 0.59”

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 = 2.48” × 1.77” × 1.69”

Main crystal size: 0.6 × 0.3 cm = 0.24” × 0.12”

TC63AL1: A novelty at Tucson 2020. Cinnabar crystals with dominant rhombohedral habit, along with other minor crystal forms, translucent, extraordinarily brilliant and very bright in color, on matrix with small crystals of Calcite and Quartz. The specimen comes from a recent find and has been carefully analyzed and determined to be Cinnabar. It has been said that in specimens from this find there could be Metacinnabar too, but our analyses have not detected any. We’ll send a copy of the analysis to the buyer.
Cocineras Mine, West Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (2019)

Specimen size: 3.3 × 1.7 × 1 cm = 1.30” × 0.67” × 0.39”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”

BYA61AO6: Dendritic growths and cubic Silver crystals, with extraordinarily sharp crystal forms, lustrous, on a Calcite matrix.
The specimen comes from an important European collection and was sold by the well-known Dr. Wilke.
Batopilas, Andrés del Río District, Municipio Batopilas, Chihuahua  Mexico

Specimen size: 7.1 × 5.2 × 4 cm = 2.80” × 2.05” × 1.57”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”

NL90AM4: Short prismatic crystals of Pyromorphite with good luster and an intense green color that contrasts with the white rock matrix.
This specimen, from a little known Mexican locality that has produced few quality specimens, comes from the Ignacio Gaspar Sintes collection (number PIF-60) and, previously, from Peter Megaw's. We will send the buyer the labels of both collections.
San Luis Mine, San José, Municipio Guazapares, Chihuahua  Mexico

Specimen size: 8 × 6 × 5 cm = 3.15” × 2.36” × 1.97”

Main crystal size: 0.2 × 0.2 cm = 0.08” × 0.08”

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 = 2.83” × 1.81” × 1.65”

Main crystal size: 2 × 2 cm = 0.79” × 0.79”

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 = 3.54” × 2.52” × 2.01”

Main crystal size: 2.3 × 2.1 cm = 0.91” × 0.83”

GV86AK2: Parallel growth of very sharp, colorless transparent, lustrous, tabular to lamellar Celestine crystals, with a group of Fluorite crystals of cubic habit, one of them clearly dominant, with polycrystalline growths, transparent, lustrous, and a uniform lilac color. The specimen is from the Casado Margolles collection (reg. FRM80), whose card we will send to the buyer.
Tule Mine, Melchor Múzquiz, Municipio Melchor Múzquiz, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 9.2 × 7.3 × 1.5 cm = 3.62” × 2.87” × 0.59”

Main crystal size: 1.4 × 1.4 cm = 0.55” × 0.55”

MC12AK7: Aerial growths, on limonite matrix, of very sharp crystals, some of them doubly terminated, translucent, very lustrous, yellow with greenish tones.
The specimen comes from the Carles Manresa collection, whose label we will send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 4.6 × 4.2 × 3.4 cm = 1.81” × 1.65” × 1.34”

Main crystal size: 0.2 × 0.2 cm = 0.08” × 0.08”

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 = 2.52” × 2.09” × 1.26”

Main crystal size: 0.7 × 0.5 cm = 0.28” × 0.20”

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 = 1.38” × 1.14” × 0.79”

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 = 1.50” × 1.46” × 0.87”

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 = 1.73” × 1.42” × 1.02”

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 = 1.93” × 1.73” × 1.14”

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 = 2.52” × 1.69” × 1.02”

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 = 5.39” × 3.70” × 1.93”

MY14AK9: Group of Hemimorphite crystals, in a matrix of limonite, translucent, white, bright and with excellent terminations.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 6 × 5.1 × 3.7 cm = 2.36” × 2.01” × 1.46”

Main crystal size: 1.8 × 0.5 cm = 0.71” × 0.20”

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 = 2.83” × 2.09” × 0.79”

Main crystal size: 1.2 × 0.5 cm = 0.47” × 0.20”

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 = 2.72” × 2.05” × 1.50”

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 = 3.74” × 2.76” × 1.89”

TCP27AO4: Group of lamellar Wulfenite crystals on matrix, one of them dominant, very sharp and rich in crystal forms. With geometric, transparent and uniform yellow zoning with oxide inclusions.
We will send the buyer the specimen in its original Perky box from the Robert J. (Bob) Noble collection, which also contains the label, stating that it was previously in the Melanson collection.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 2.6 × 2.2 × 2 cm = 1.02” × 0.87” × 0.79”

Main crystal size: 1.7 × 1.3 cm = 0.67” × 0.51”

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 = 2.56” × 2.40” × 1.30”

Main crystal size: 0.7 × 0.7 cm = 0.28” × 0.28”

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 = 3.35” × 2.05” × 1.54”

Main crystal size: 0.3 × 0.2 cm = 0.12” × 0.08”

TMX16AN7: Globular growths of lenticular Austinite crystals, with sharp crystal forms and strong curvatures on the faces and edges, translucent, with a yellow-green color, on a limonite matrix.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 3.2 × 2.2 × 1.2 cm = 1.26” × 0.87” × 0.47”

TL73AL6: Spheroidal aggregates, on a limonite matrix, of intense green Austinite crystals (copper-bearing variety), covered by small white crystals of Adamite with a matte luster.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 8.3 × 7.4 × 5.6 cm = 3.27” × 2.91” × 2.20”

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 = 1.97” × 1.77” × 1.26”

TF57AL5: Aggregates of highly profiled Austinite crystals, rich in copper, between transparent and translucent, bright, with a very deep and uniform green color and on a limonite matrix.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7.1 × 3.7 × 3.4 cm = 2.80” × 1.46” × 1.34”

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 = 3.03” × 1.97” × 1.65”

TR13AL1: A novelty at Tucson 2020. Fan-shaped growths of short prismatic crystals of light violet Creedite, with very sharply pointed terminal faces, good luster, on matrix, with green Fluorite. This specimen is quite different from those that were known from this locality in recent years, although there are similar pieces from this mine in some old collections, which supports the indications that this find was made in old galleries of the mine.
Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango  Mexico (10-12/2019)

Specimen size: 8 × 6.3 × 3.2 cm = 3.15” × 2.48” × 1.26”

Main crystal size: 1.8 × 0..4 cm = 0.71” × 0.00”

TB27AL7: A novelty at Tucson 2020: Druse, on matrix, of bipyramidal Creedite crystals, some of them doubly terminated, with sharp pointed terminations, between transparent and translucent, lustrous, and light violet in color. The specimen is quite different from those known from this locality in recent years, although in some old collections there are similar specimens from the same source, which coincides with the indications that this find was made in old galleries of the mine.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 43 of the 2020/02 edition.
Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango  Mexico (10-12/2019)

Specimen size: 8.6 × 6.2 × 5.5 cm = 3.39” × 2.44” × 2.17”

Main crystal size: 0.6 × 0.3 cm = 0.24” × 0.12”

TBT48AO6: Botryoidal and stalagmitic growths of Cassiterite in concentric bands ("wood tin" variety). It should be noted that it is on matrix, which is quite uncommon for this variety of Cassiterite.
Santín Mine, De las Fajas Hill, Santa Catarina, Guanajuato  Mexico

Specimen size: 6.2 × 4.3 × 2.4 cm = 2.44” × 1.69” × 0.94”

TZ71AK9: Two very sharp and lustrous Acanthite crystals, of cubic habit (pseudomorphic after Argentite) with very deep hopper growths. An excellent miniature, a classic of Mexican mineralogy, from an old collection.
San Juan de Rayas Mine, Guanajuato, Municipio Guanajuato  Mexico

Specimen size: 3.2 × 2.6 × 2 cm = 1.26” × 1.02” × 0.79”

Main crystal size: 2 × 1.9 cm = 0.79” × 0.75”

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 = 1.34” × 1.10” × 0.94”

Main crystal size: 2.2 × 1.6 cm = 0.87” × 0.63”

TD29AM5: Lenticular Rhodochrosite crystals that cover a matrix of Quartz crystals, with a second generation of epitactic Rhodochrosite that preserves the missing Quartz crystal forms. Good quality for the Rhodochrosites from this locality.
Los Remedios Mine, Taxco de Alarcón, Municipio Taxco, Guerrero  Mexico

Specimen size: 9 × 6.7 × 5.1 cm = 3.54” × 2.64” × 2.01”

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.
Los Remedios Mine, Taxco de Alarcón, Municipio Taxco, Guerrero  Mexico (±1990)

Specimen size: 9.3 × 8.8 × 5 cm = 3.66” × 3.46” × 1.97”

JR96X9: Cluster of very acute scalenohedral Calcite crystals. They are translucent and bright and are on matrix. The sample is from a not well known mine at Taxco from where such fine samples are scarce.
Los Remedios Mine, Taxco de Alarcón, Municipio Taxco, Guerrero  Mexico (±1988)

Specimen size: 12.5 × 7.8 × 8.2 cm = 4.92” × 3.07” × 3.23”

Main crystal size: 2.5 × 1.1 cm = 0.98” × 0.43”

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 = 1.02” × 0.98” × 0.55”

Main crystal size: 0.3 × 0.2 cm = 0.12” × 0.08”

TR89AL5: Spheroidal aggregates of very sharp Miargyrite crystals, of good size for the species and very bright. On matrix with Quartz. The high quality specimen comes from a recent find in the San José mine. This piece has been analyzed and 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: 3 × 2.2 × 1.5 cm = 1.18” × 0.87” × 0.59”

Main crystal size: 1.2 × 1.1 cm = 0.47” × 0.43”

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 = 1.26” × 0.79” × 0.71”

Main crystal size: 0.3 × 0.2 cm = 0.12” × 0.08”

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 = 1.73” × 0.98” × 1.14”

Main crystal size: 1.6 × 1.4 cm = 0.63” × 0.55”

TF89AL3: Acanthite crystal growths (selenium-rich) with the dominant faces being the rhombododecahedron, an unusual form for the species, some of them with hoppered growths, associated with Polybasite crystals, likewise rich in selenium, Calcite, and coatings of small Pyrite crystals. Analyses of the specimen, of which we will send a copy to the buyer, indicate a high content of selenium in both the Acanthite and the Polybasite.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (01/2018)

Specimen size: 3.8 × 3.8 × 3.7 cm = 1.50” × 1.50” × 1.46”

Main crystal size: 0.5 × 0.5 cm = 0.20” × 0.20”

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.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 43 of the 2019/02 edition.
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 = 2.56” × 1.77” × 1.34”

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 = 0.55” × 0.51” × 0.63”

Main crystal size: 1.2 × 0.4 cm = 0.47” × 0.16”

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 = 0.87” × 0.47” × 0.47”

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 = 0.98” × 0.79” × 0.47”

Main crystal size: 1.7 × 0.3 cm = 0.67” × 0.12”

TCR87AO4: Very aerial group of Stephanite crystals with hexagonal outlines, very sharp crystal forms and intense luster. They comprise the base for small Polybasite and Selenopolybasite crystals, most likely due to two successive formation phases. This specimen has been individually analyzed and 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: 2.8 × 2.4 × 1.9 cm = 1.10” × 0.94” × 0.75”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”

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 = 2.24” × 1.85” × 1.38”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”

MC13AM7: Group of Datolite crystals with sharp crystal forms, translucent, with good luster and a pale green color and bordered by a second generation of small, very transparent and lustrous white crystals of Calcite. A Mexican classic that we will send in its original Perky box from the Robert J. (Bob) Noble collection, which also contains the label.
Charcas, Municipio Charcas, San Luis Potosí  Mexico

Specimen size: 2.4 × 2.3 × 2.2 cm = 0.94” × 0.91” × 0.87”

Main crystal size: 1.3 × 1.2 cm = 0.51” × 0.47”

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 = 7.48” × 0.79” × 0.55”

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, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (10/2011)

Specimen size: 4.4 × 2.8 × 2.2 cm = 1.73” × 1.10” × 0.87”

Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”

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 = 1.77” × 1.26” × 0.71”

Main crystal size: 2.5 × 2.2 cm = 0.98” × 0.87”

TB47AL5: Floater group of highly profiled, flattened crystals with very well defined faces and edges, with an equidimensional habit, bright, and very deep in color with intense and vivid translucency on the edges. As usually happens in the Milpillas mine, of extraordinary quality, especially due to the sharpness of the crystals.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2020)

Specimen size: 4,6 × 3.4 × 1 cm = 1.57” × 1.34” × 0.39”

Main crystal size: 3.4 × 2.3 cm = 1.34” × 0.91”

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 = 1.93” × 1.38” × 0.98”

Main crystal size: 1 × 0.8 cm = 0.39” × 0.31”

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 = 1.97” × 1.14” × 0.98”

Main crystal size: 2.4 × 1.4 cm = 0.94” × 0.55”

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

Specimen size: 5.1 ×  3 × 2.8 cm = 2.01” × 1.18” × 1.10”

Main crystal size: 1.3 × 0.9 cm = 0.51” × 0.35”

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 = 2.13” × 1.26” × 0.55”

Main crystal size: 4 × 2.1 cm = 1.57” × 0.83”

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 = 2.52” × 1.61” × 1.26”

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 = 2.99” × 2.95” × 0.71”

Main crystal size: 2.2 × 1.1 cm = 0.87” × 0.43”

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 = 4.21” × 3.98” × 2.09”

Main crystal size: 2.3 × 1.2 cm = 0.91” × 0.47”

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 = 1.65” × 1.57” × 1.85”

Main crystal size: 4.2 × 3.5 cm = 1.65” × 1.38”

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 = 2.20” × 1.69” × 1.30”

Main crystal size: 3.4 × 1.3 cm = 1.34” × 0.51”

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 = 2.24” × 1.73” × 1.26”

Main crystal size: 2.2 × 0.9 cm = 0.87” × 0.35”

TC37AL4: A novelty at Tucson 2020 for its appearance and color. Group of very sharp Azurite crystals, partially pseudomorphs after Azurite, with very vivid translucent reflections on the edges and partially covered with a second generation of Malachite with a fibrous appearance and a color very different from the usual one.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2020)

Specimen size: 6.6 × 5 × 2.6 cm = 2.60” × 1.97” × 1.02”

Main crystal size: 2.7 × 2.5 cm = 1.06” × 0.98”

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 = 3.03” × 2.24” × 2.91”

Main crystal size: 4 × 1.8 cm = 1.57” × 0.71”

TE27AL7: Arborescent groups on matrix of primary Malachite crystals between acicular and fibrous, with a silky luster and color changes from bright green to darker green. A different kind of specimen from what is usual from the locality.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2020)

Specimen size: 9.6 × 7.1 × 8.2 cm = 3.78” × 2.80” × 3.23”

Main crystal size: 3.5 × 3.3 cm = 1.38” × 1.30”

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 = 5.00” × 2.87” × 1.18”

Main crystal size: 3.1 × 3.1 cm = 1.22” × 1.22”

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 = 4.61” × 3.62” × 1.89”

Main crystal size: 3.2 × 2 cm = 1.26” × 0.79”

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 = 4.72” × 3.62” × 1.30”

Main crystal size: 2.8 × 1.5 cm = 1.10” × 0.59”

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 = 4.84” × 3.58” × 1.50”

Main crystal size: 2.8 × 2.5 cm = 1.10” × 0.98”

BBR46AO5: Aggregate on matrix of elongated crystals of Brochantite that form groups of parallel growths, with good terminations, very sharp, with bright luster and a very deep color.
Due to their characteristics, in our opinion, they can be considered among the best known specimens for the species.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 7.2 × 5.8 × 4.7 cm = 2.83” × 2.28” × 1.85”

Main crystal size: 1.6 × 0.3 cm = 0.63” × 0.12”

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 = 3.74” × 2.48” × 1.30”

Main crystal size: 1 × 0.4 cm = 0.39” × 0.16”

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 = 0.83” × 0.39” × 0.43”

Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”

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 = 1.30” × 1.22” × 1.02”

Main crystal size: 1 × 0.4 cm = 0.39” × 0.16”

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 = 1.97” × 1.34” × 0.67”

Main crystal size: 0.8 × 0.8 cm = 0.31” × 0.31”

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 = 2.20” × 1.97” × 0.98”

Main crystal size: 0.9 × 0.6 cm = 0.35” × 0.24”

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 = 2.76” × 1.89” × 0.71”

Main crystal size: 0.8 × 0.6 cm = 0.31” × 0.24”

TA50AL2: A novelty at Tucson 2020. Two outstanding Olivenite crystals, one of them clearly dominant, flattened, with very well defined faces and edges and perfect terminations, lustrous and very deep olive green. As on so many other occasions in Milpillas, among the best of the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 1.8 × 0.9 × 0.6 cm = 0.71” × 0.35” × 0.24”

TD88AM3: A novelty at Tucson 2020. Group of Olivenite crystals on matrix, one of them clearly dominant and very aerial and sharp, flattened, with very well defined faces and edges and perfect terminations. With good luster and a very deep olive-green color. As on so many other occasions in Milpillas, among the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 2.2 × 1.4 × 0.8 cm = 0.87” × 0.55” × 0.31”

Main crystal size: 1.1 × 0.3 cm = 0.43” × 0.12”

TY90AM0: A novelty at Tucson 2020. Isolated crystals of Olivenite on matrix, flat and most of them doubly terminated. With very well defined faces and edges and perfect terminal faces, lustrous and very deep olive green. As with so many things from Milpillas, among the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 4.5 × 4.2 × 3.2 cm = 1.77” × 1.65” × 1.26”

Main crystal size: 1.2 × 0.2 cm = 0.47” × 0.08”

TT96AL9: A novelty at Tucson 2020. Druse of elongated Olivenite crystals on matrix with sharp faces and edges and good terminal faces, with good luster and a very deep olive green color. As with so many other finds fromn Milpillas, among the best for the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 7.2 × 5.5 × 1.6 cm = 2.83” × 2.17” × 0.63”

Main crystal size: 0.6 × 0.1 cm = 0.24” × 0.04”

TV87AL2: A novelty at Tucson 2020. Matrix group of acicular Olivenite crystals with very well defined faces and edges, lustrous and very deep olive green. As on so many other occasions in Milpillas, among the best of the species.
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 7.7 × 6.6 × 2.4 cm = 3.03” × 2.60” × 0.94”

Main crystal size: 1.1 × 0.1 cm = 0.43” × 0.04”

TR48AL5: A novelty at Tucson 2020. Groups of very sharp Olivenite crystals, many of them doubly terminated, with very well defined faces and edges and perfect terminal faces, transparent or translucent, bright and with a very deep olive-green color. On matrix with coatings of small yellowish-white botryoidal aggregates of Hydroniumjarosite. As in so many other occasions with Milpillas, among the best for the species.
This sample has been referenced and pictured, as a novelty in Ste. Marie Virtual 2020, in the magazine 'Le Règne Minéral' number 154, page 45
Milpillas Mine, level 992, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2019)

Specimen size: 9.6 × 6.4 × 4 cm = 3.78” × 2.52” × 1.57”

Main crystal size: 1.4 × 0.3 cm = 0.55” × 0.12”

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 = 0.51” × 0.39” × 0.35”

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 = 1.26” × 1.18” × 0.59”

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 = 0.31” × 0.31” × 0.12”

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 = 0.43” × 0.24” × 0.20”

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 = 0.43” × 0.39” × 0.35”

TB88AL2: A novelty at Tucson 2019. Spherulitic growths and felted aggregates of Shattuckite, with an intense deep color and encompassed in small Quartz crystals that protect them. On Quartz matrix, with Chrysocolla. We highlight, apart from the beauty of the specimen, the presence of crystallized Quartz, a very rare species in Milpillas. We will send the buyer a copy of the Shattuckite analysis.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 5.3 × 3.9 × 2.1 cm = 2.09” × 1.54” × 0.83”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”

TZ37AK9: Druze of small rhombohedral Dioptase crystals, transparent and extraordinarily brilliant, on matrix, with small water-clear crystals of Calcite. Dioptase is a rarity in Milpillas. One more surprise from a locality which is accustoming us to surprises.
Milpillas Mine, level 890, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2018)

Specimen size: 3.6 × 3.5 × 1.3 cm = 1.42” × 1.38” × 0.51”

Main crystal size: 0.3 × 0.1 cm = 0.12” × 0.04”

TT93AL1: A novelty at Tucson 2019. Druze of small elongated Dioptase crystals, with rhombohedral terminations, transparent and with bright luster, on matrix with pale blue shattuckite. Dioptase is a rarity in Milpillas, another surprise like many to which this locality has accustomed us.
The sample has been noted and photographed in the monograph 'The Milpillas Mine' of the ‘Mineralogical Record‘ magazine on page 585 in the volume 52, number 5, September-October 2021 and in the magazine ‘Mineral Up’ on page 42 of the 2020/02 edition.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2019)

Specimen size: 6.1 × 4.4 × 3.1 cm = 2.40” × 1.73” × 1.22”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”

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 = 4.72” × 2.83” × 0.67”

Main crystal size: 0.9 × 0.4 cm = 0.35” × 0.16”

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 = 0.67” × 0.55” × 0.47”

TMA97AN5: Aerial group of cubo-octahedral Acanthite crystals, very shiny and sharp for the species, and with distinct hopper growths on some of the faces.
We will send the specimen, from a very classic Mexican locality for Acanthite, in its original Perky box from the Robert J. (Bob) Noble collection, which also contains the label.
Proaño Mine, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 2.4 × 1.3 × 1.1 cm = 0.94” × 0.51” × 0.43”

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 = 1.54” × 0.55” × 0.71”

Main crystal size: 2 × 1.1 cm = 0.79” × 0.43”

TY86AN2: Group of Acanthite pseudomorphs after large Polybasite crystals that have preserved the hexagonal morphology and the original skeletal growths
Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 5.1 × 4.5 × 2.7 cm = 2.01” × 1.77” × 1.06”

Main crystal size: 4.8 × 4.6 cm = 1.89” × 1.81”

TAM37AO3: Group of Pyrargyrite crystals with elongated and very sharp prismatic crystal forms and excellent terminations, lustrous and aerial.
We will send the specimen to the buyer in its original Perky box from the Robert J. (Bob) Noble collection, which also contains the label.
Proaño Mine, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 1.8 × 1.4 × 1.3 cm = 0.71” × 0.55” × 0.51”

TN68AL4: This floater specimen has rosette growths of Azurite crystals with very well defined crystal forms, marked polycrystalline growths and a very intense and vivid color. The high-quality specimen is among the best known for this classic world Azurite locality, and was found by Jimmy Vacek in 1986.
Concepción del Oro, Municipio Concepción del Oro, Zacatecas  Mexico (1986)

Specimen size: 6.1 × 4.7 × 3.9 cm = 2.40” × 1.85” × 1.54”

NF48AN2: Pyrargyrite crystal of good size with very marked parallel growths and flat terminations, and with a second generation of microcrystals of more Pyrargyrite.
The specimen comes from the Ignacio Gaspar collection (number PIR-18), whose label we will send to the buyer. The crystal has been analyzed and we will send a copy of the analysis to the buyer too.
Zacatecas  Mexico

Specimen size: 3 × 3 × 2 cm = 1.18” × 1.18” × 0.79”

Main crystal size: 2 × 1.7 cm = 0.79” × 0.67”

TFL26AO5: Botryoidal growth of Mimetite, translucent, with orange color and on matrix. The specimen comes from a Mexican locality that is little known to collectors.
Bilbao Mine, La Blanca, Ojocaliente Municipality, Zacatecas  Mexico

Specimen size: 7 × 4.7 × 3.3 cm = 2.76” × 1.85” × 1.30”

TL26AK8: A trapezohedral crystal of Analcime, with small black Aegirine crystals, and partially coated with prismatic Natrolite crystals, some of them doubly terminated, with excellent terminal faces, an unusual association in Mont Saint-Hilaire.
The specimen will be sent in the original Perky box from the Robert J. Noble collection, which also contains the label.
Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec  Canada

Specimen size: 2.8 × 2.1 × 1.7 cm = 1.10” × 0.83” × 0.67”

Main crystal size: 2 × 2 cm = 0.79” × 0.79”

EAM90AN5: Group of Serandite crystals with very sharp crystal forms, with parallel growths, good luster and an intense salmon-pink color, on matrix. They are accompanied by acicular crystals of Aegirine and white prismatic crystals of Natrolite.
Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec  Canada

Specimen size: 4.4 × 4.2 × 2.4 cm = 1.73” × 1.65” × 0.94”

Main crystal size: 3.3 × 2.3 cm = 1.30” × 0.91”

EV90AA3: Parallel growth of Serandite crystals with very well defined faces and edges and an intense color. They are implanted on a matrix of laminar Albite and have thin black Aegirine crystals scattered about.
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec  Canada (1984)

Specimen size: 5.4 × 2.7 × 2.6 cm = 2.13” × 1.06” × 1.02”

ET49AD7: Aggregate of very sharp intergrown rhombohedral crystals, one of them clearly dominant and complete. They are bright and have a very intense deep color. This morphology, so well defined, is unusual with samples from Mount-Saint- Hilaire.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 59 of the 2016/02 edition and in the magazine ‘extraLAPIS’ on page 9, number 56, "Rhodochrosit"
Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec  Canada (08/2015)

Specimen size: 3.5 × 2.8 × 1.6 cm = 1.38” × 1.10” × 0.63”

Main crystal size: 2.4 × 1.9 cm = 0.94” × 0.75”

EJ26AG5: A group of very well defined crystals, one of them clearly dominant, with parallel growths on the faces, very bright and with a very vivid blue color. There are also small Feldspar and Calcite crystals and aggregates of small, black, acicular, Arfvedsonite crystals. The sample is with a label of a Canadian collection.
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec  Canada (2013)

Specimen size: 4.6 × 3.3 × 4.3 cm = 1.81” × 1.30” × 1.69”

Main crystal size: 1.7 × 0.9 cm = 0.67” × 0.35”

TTM13AN7: Very aerial spheroidal growths of glossy black Goethite. On matrix with Dolomite and small cubic Pyrite crystals.
We will ship the piece in its original Perky box from the Robert J. Noble collection, which also contains the label, which shows a Wawa location, which was actually where the port of export of the material extracted from the mine was located.
Helen-MacLeod Mines, McMurray and Chabanel Townships, Algoma District, Ontario  Canada

Specimen size: 2.7 × 2.4 × 1.5 cm = 1.06” × 0.94” × 0.59”

Main crystal size: 1.4 × 1.4 cm = 0.55” × 0.55”

NB26AK9: Outstanding matrix group of Sphalerite crystals of complex habit, translucent and intense orange. A good specimen from a well known Canadian locality but one from which Sphalerite of good quality for collections is rare.
Flamboro Quarry, West Flamborough Township, Hamilton, Ontario  Canada

Specimen size: 4.3 × 3.8 × 2.1 cm = 1.69” × 1.50” × 0.83”

Main crystal size: 0.6 × 0.5 cm = 0.24” × 0.20”

EB76AL4: From a find by local field collectors between 2008 and 2011 in a mineralogically previously little-known locality. Group of crystals, one of them clearly dominant, flattened, with the japan-law twin unusually closed, which gives it a unitary crystal appearance, with sharp crystal forms, transparent, with good luster, colorless and with reddish tones in some areas due to the presence of oxide inclusions.
Harrison Lake, Chilliwack, Regional District Fraser Valley, British Columbia  Canada (2008-2011)

Specimen size: 3.9 × 3.5 × 3.1 cm = 1.54” × 1.38” × 1.22”

Main crystal size: 1.1 × 1.1 cm = 0.43” × 0.43”

EJ27AI1: From a find between 2008 and 2011 by local prospectors on a not well known, until today, mineral locality. Group of crystals, one of them clearly dominant and well centered on the sample so, it is very esthetic. These crystals, twinned with the very well defined japan law twin, have very sharp crystalline forms and are transparent, bright, colorless and with reddish shades in some areas due to iron oxide inclusions.
Harrison Lake, Chilliwack, Regional District Fraser Valley, British Columbia  Canada (2008-2011)

Specimen size: 6.2 × 4.8 × 4.3 cm = 2.44” × 1.89” × 1.69”

Main crystal size: 2.1 × 1.6 cm = 0.83” × 0.63”

EF96AI1: From a find between 2008 and 2011 by local prospectors on a not well known, until today, mineral locality. Group of crystals, one of them well centered on the sample, flattened, with the very well defined japan law twin and very sharp crystalline forms. It is transparent, bright, colorless and with reddish shades in some areas due to iron oxide inclusions.
Harrison Lake, Chilliwack, Regional District Fraser Valley, British Columbia  Canada (2008-2011)

Specimen size: 8.6 × 3.4 × 6.5 cm = 3.39” × 1.34” × 2.56”

Main crystal size: 1.7 × 1.7 cm = 0.67” × 0.67”

TQA46AO0: Group of Diopside crystals with an unusual habit, tabular in appearance, but actually formed by very flat dominant prisms. Very transparent, lustrous, and with a color that varies from pale yellow to violet.
We will ship the specimen in its original Perky box from the Robert J. (Bob) Noble collection, which also contains the label.
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec  Canada

Specimen size: 3.4 × 2.1 × 1 cm = 1.34” × 0.83” × 0.39”

Main crystal size: 0.9 × 0.6 cm = 0.35” × 0.24”

TA14AN2: Doubly terminated crystal of Vesuvianite with uneven growths on both terminations, one of them with a smooth and shiny pinacoidal face and the opposite irregular and matte at the ends.
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec  Canada

Specimen size: 3.4 × 0.7 × 0.7 cm = 1.34” × 0.28” × 0.28”

MD3K0: Group of crystals, a lot of them doubly terminated, with an excellent luster and color, moving from green to mauve but basically yellow. The tips of the pyramids are transparent. The specimen, with the presence of small tabular and transparent crystals of Diopside, is a floater.
Jeffrey Mine, ↓200 m, Asbestos, Les Sources RCM, Estrie, Québec  Canada (09/2005)

Specimen size: 7.6 × 5.8 × 5.4 cm = 2.99” × 2.28” × 2.13”

Main crystal size: 0.4 × 0.3 cm = 0.16” × 0.12”

NFY67AO5: Trapezohedral crystals of Grossular (variety hessonite) with very sharp crystal forms, transparent, extraordinarily lustrous, on a matrix covered by small Chlorite crystals.
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec  Canada

Specimen size: 4.1 × 2.6 × 2.1 cm = 1.61” × 1.02” × 0.83”

Main crystal size: 1.2 × 0.9 cm = 0.47” × 0.35”

TQ89AI0: Double group of very sharp Pectolite crystals, all them doubly terminated and with very well defined faces and edges, a snowy white color, pearly luster and partially coated by Calcite and small Grossular aggregates. A fine Canadian classic, of great quality.
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Québec  Canada

Specimen size: 6.3 × 3.1 × 1.8 cm = 2.48” × 1.22” × 0.71”

Main crystal size: 2.4 × 1.3 cm = 0.94” × 0.51”

MK86AD9: Aggregate of twinned Lazulite crystals, quite large for the locality and on matrix, with white Augelite microcrystals and rhombohedral Siderite crystals.
Crosscut Creek, Kulan Camp area, Rapid Creek area, Dawson mining district, Yukon Territory  Canada (07/1995)

Specimen size: 5.2 × 4 × 3.4 cm = 2.05” × 1.57” × 1.34”

Main crystal size: 1.2 × 1.1 cm = 0.47” × 0.43”

MJ86AE2: Aggregate of twinned Lazulite crystals with very well defined faces and edges and partially coated by very bright pale green Augelite microcrystals, a small brown rhombohedral Siderite and clear Quartz.
Crosscut Creek, Kulan Camp area, Rapid Creek area, Dawson mining district, Yukon Territory  Canada (07/1995)

Specimen size: 6.8 × 6.1 × 2.2 cm = 2.68” × 2.40” × 0.87”

Main crystal size: 1.2 × 0.8 cm = 0.47” × 0.31”

EC66K0: Twinned crystals, one of them clearly dominant, of sharp faces and edges with good luster and color, on a matrix very rich in small crystals of Siderite and Quartz.
Rapid Creek area, Dawson mining district, Yukon Territory  Canada

Specimen size: 8.1 × 5.6 × 4.5 cm = 3.19” × 2.20” × 1.77”

Main crystal size: 0.7 × 0.6 cm = 0.28” × 0.24”

MBB56AO1: Very sharp Wardite crystals, with a dipyramidal shape, translucent, on matrix and with some of their faces partially covered by small Childrenite crystals.
Stoneman Mountain, Rapid Creek, Dawson mining district, Yukon Territory  Canada (07/1995)

Specimen size: 5 × 3.7 × 2.4 cm = 1.97” × 1.46” × 0.94”

Main crystal size: 1.3 × 1 cm = 0.51” × 0.39”

EL89AA3: Aggregate of very sharp and very well defined Augelite crystals, between translucent and transparent, with a nice green color zoned by brown Siderite inclusions and on matrix, with Siderite.
Kulan Camp area, Rapid Creek area, Dawson mining district, Yukon Territory  Canada (1998)

Specimen size: 3.7 × 2.5 × 1.8 cm = 1.46” × 0.98” × 0.71”

Main crystal size: 0.8 × 0.6 cm = 0.31” × 0.24”

MX76AH6: Whiteite-(CaFeMg) crystals with thick tabular shape and very well defined parallel growths. They have a clear cream color and are partially coated by small Lazulite and Quartz crystals.
Crosscut Creek, Kulan Camp area, Rapid Creek area, Dawson mining district, Yukon Territory  Canada (07/1995)

Specimen size: 7.6 × 5.6 × 2.3 cm = 2.99” × 2.20” × 0.91”

Main crystal size: 1.6 × 0.6 cm = 0.63” × 0.24”

MC11AK3: Well defined Kulanite crystals, one of them clearly dominant, of a very dark color, almost black, very lustrous, on matrix, with small rhombohedral crystals of Siderite and small crystals of Quartz. An excellent specimen of this rare species from its type locality.
Crosscut Creek, Kulan Camp area, Rapid Creek area, Dawson mining district, Yukon Territory  Canada (07/1995)

Specimen size: 3.3 × 3.1 × 2.7 cm = 1.30” × 1.22” × 1.06”

Main crystal size: 0.6 × 0.2 cm = 0.24” × 0.08”