Mineral Specimens - page 2
Mexico - Canada

TC80AA: On matrix, a large crystal of Sulphur with relatively well defined faces and edges and hopper growths, between translucent and transparent, in an excellent state of preservation.
San Felipe, Mexicali, Baja California, Baja California  Mexico

Specimen size: 3.6 × 2.1 × 1.6 cm = 1.42” × 0.83” × 0.63”

Main crystal size: 2.3 × 1.8 cm = 0.91” × 0.71”

MP48AK3: Turquoise nodule, with very aesthetic cavities and relief, sky blue, with Pyrite inclusions, and of unusual size. The specimen is from a classic district for the species.
Reina Mine (Turquesa Mine), El Aguajito, Ensenada, El Rosario District, Municipio Ensenada, Baja California  Mexico

Specimen size: 6.6 × 5.6 × 4.2 cm = 2.60” × 2.20” × 1.65”

EMR88AO9: Obtained at Ste. Marie 2022
Cumengeite epitaxial on Boleite with very sharp crystal forms, translucent, with good luster and an intense color. A rarity from the type locality for the species.
Boleo District, Municipio Mulegé, Baja California Sur  Mexico

Specimen size: 0.5 × 0.4 × 0.4 cm = 0.20” × 0.16” × 0.16”

EPP88AO9: Obtained at Ste. Marie 2022
Multiple twin of interpenetrating bipyramidal Cumengeite crystals with very sharp crystal forms, translucent, with good luster and an intense color. A rarity from the type locality for the species.
Boleo District, Municipio Mulegé, Baja California Sur  Mexico

Specimen size: 0.6 × 0.4 × 0.4 cm = 0.24” × 0.16” × 0.16”

TF27AL9: Floater cubo-octahedral crystal with sharp faces and edges, with good luster and a very deep and uniform color. The back of the crystal has been cleaved but it is recrystallized and therefore the surface is natural. A Mexican classic.
Amelia Mine, Santa Rosalía (El Boleo), Boleo District, Municipio Mulegé, Baja California Sur  Mexico (2018)

Specimen size: 1 × 1 × 0.4 cm = 0.39” × 0.39” × 0.16”

BYM96AP6: Sharp Boleite crystal, large for the species, with good luster and deep color and in limonite matrix.
A Mexican and world classic, of the best quality for the species and from the type locality.
Amelia Mine, Santa Rosalía (El Boleo), Boleo District, Municipio Mulegé, Baja California Sur  Mexico (±1984)

Specimen size: 5.6 × 5.3 × 3.3 cm = 2.20” × 2.09” × 1.30”

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

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”

TBA86AO8: Thick tabular Wulfenite crystals on matrix, one of them clearly dominant and with an equant habit, with very sharp crystal forms and very well defined polycrystalline growths on the faces. They are on matrix with Vanadinite (variety endlichite) and both the luster and color are of high quality.
A Mexican classic that comes from an important European collection.
Erupción Mine (Ahumada Mine), Los Lamentos Mountain Range, Municipio Ahumada, Chihuahua  Mexico

Specimen size: 7 × 4.6 × 4.2 cm = 2.76” × 1.81” × 1.65”

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

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”

MF11AN0: Very sharp rhombohedral Calcite crystal, slightly translucent, with a uniform white color, on a matrix of small octahedral Pyrite crystals.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label, which shows that it was previously in the Melanson collection.
Naica, Municipio Saucillo, Chihuahua  Mexico

Specimen size: 2.7 × 2.6 × 2.1 cm = 1.06” × 1.02” × 0.83”

Main crystal size: 2.2 × 1.9 cm = 0.87” × 0.75”

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”

TX26AN2: Druse of Quartz crystals (variety amethyst) with curious curvatures and various unusual growth formations, many of them with a Tessin habit. It also has colorless and water-clear crystals of Fluorite, one of them clearly dominant. Such specimens came from only a few specific finds in Naica between 1985 and 1990.
Naica Mine, Naica, Municipio Saucillo, Chihuahua  Mexico (±1985-90)

Specimen size: 12.4 × 10 × 7.3 cm = 4.88” × 3.94” × 2.87”

Main crystal size: 4 × 0.8 cm = 1.57” × 0.31”

EA47AM2: Very aerial group of twinned Sphalerite crystals (variety marmatite) with distinct polycrystalline growths, and very bright luster, on matrix. Associated with cubo-octahedral Galena crystals and complex transparent and lustrous Fluorite crystals.
Naica Mine, Naica, Municipio Saucillo, Chihuahua  Mexico

Specimen size: 6 × 4.9 × 4.2 cm = 2.36” × 1.93” × 1.65”

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

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”

SM890TTP: Monumental group of twinned Sphalerite crystals with sharp crystal forms, lustrous, on matrix, with cubo-octahedral Galena crystals, white rhombohedral Dolomite crystals and small Quartz crystals (citrine variety).
The specimen comes from the collection of José Luis Vallecillo from Madrid, and the Citrine variety Quartz gives it a different aspect from the usual specimens from this locality.
Naica Mine, Naica, Municipio Saucillo, Chihuahua  Mexico

Specimen size: 23 × 15 × 9.5 cm = 9.06” × 5.91” × 3.74”

Main crystal size: 3.5 × 2.5 cm = 1.38” × 0.98”

TC200GF: Fluorite crystals on matrix, transparent, with good luster and a uniform pale green color, partially covered by scalenohedral Calcite crystals and Dolomite rhombohedra. This specimen comes from the Casado Margolles collection, whose collection card we will send to the buyer.
Naica Mine, Naica, Municipio Saucillo, Chihuahua  Mexico

Specimen size: 8.7 × 6.5 × 3.4 cm = 3.43” × 2.56” × 1.34”

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

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”

TR14AN1: Group of Arsenopyrite crystals with sharp crystal forms, lustrous, on matrix.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label, which shows that it was previously in the Melanson collection.
San Antonio Mine (San Antonio el Grande Mine), East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 2.7 × 1.8 × 1.3 cm = 1.06” × 0.71” × 0.51”

Main crystal size: 1.4 × 0.5 cm = 0.55” × 0.20”

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”

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.
This sample has been referenced and figured in the book "Minéraux - Le Guide des Passionnés" (page 248)
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 = 2.87” × 1.61” × 2.32”

Main crystal size: 3.4 × 1.5 cm = 1.34” × 0.59”

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”

EY68AM5: Botryoidal Smithsonite growth on matrix, translucent and with an intense and uniform green color. A Mexican classic, different from the usual, with a matrix that appears to be a fossil relic.
San Antonio Mine (San Antonio el Grande Mine), East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 8.1 × 5 × 3.4 cm = 3.19” × 1.97” × 1.34”

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 = 2.36” × 1.97” × 1.30”

Main crystal size: 2.1 × 2 cm = 0.83” × 0.79”

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 = 6.30” × 3.82” × 2.56”

Main crystal size: 1.2 × 0.6 cm = 0.47” × 0.24”

NFF66AO5: Group of rhombohedral crystals of Calcite on matrix, with well defined faces, with curvatures on the edges, translucent, with good luster and a reddish color, more intense than usual for the locality, due to inclusions of iron oxides.
The specimen comes from the collection of Santiago Jiménez who, especially in the 1980s and '90s, put together an excellent collection with a very good representation of the mineralogy of northern Spain.

Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 11.2 × 7.2 × 4.3 cm = 4.41” × 2.83” × 1.69”

Main crystal size: 3.4 × 2.2 cm = 1.34” × 0.87”

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 = 4.41” × 4.02” × 3.90”

Main crystal size: 9 × 5.2 cm = 3.54” × 2.05”

ME56AN0: Mosaic of small Pyrite crystals pseudomorphing an elongated Pyrrhotite crystal on a matrix of Sphalerite crystals. Different.
We will ship the specimen, which comes from a classic Mexican locality for the species, in its original Perky box from the Robert J. Noble collection, which also contains the label.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 3.1 × 1.3 × 1.1 cm = 1.22” × 0.51” × 0.43”

Main crystal size: 2.2 × 0.8 cm = 0.87” × 0.31”

THH16AN3: Group of Rhodochrosite crystals with the dominant forms of a flattened rhombohedron, translucent, with good luster and an intense pink 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, which shows that it was previously in the Frank Melanson collection.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 2 × 1.5 × 1.2 cm = 0.79” × 0.59” × 0.47”

TXF14AN7: Botryoidal Rhodochrosite growths, with good luster and an intense pink color, partially covering a stalagmitic growth of Hisingerite.
We will ship the piece in its original Perky box from the Robert J. Noble collection, which also contains the label, which shows that it was previously in the Melanson collection.
Potosí Mine, Santo Domingo (Francisco Portillo), Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 4 × 1.3 × 1.3 cm = 1.57” × 0.51” × 0.51”

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”

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 = 1.38” × 0.83” × 0.79”

Main crystal size: 1.7 × 0.8 cm = 0.67” × 0.31”

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”

TKK14AN3: Group of short prismatic crystals of Pyrrhotite with very sharp crystal forms and polycrystalline growths, lustrous, on matrix, with small crystals of Sphalerite.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico

Specimen size: 3.7 × 2.3 × 2.1 cm = 1.46” × 0.91” × 0.83”

Main crystal size: 1.2 × 0.7 cm = 0.47” × 0.28”

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”

HM60TP: A novelty at Tucson 2020: crystals of Cinnabar with a dominant rhombohedral habit along with other lesser crystal forms, translucent, extraordinarily lustrous and with a very vivid color, on matrix, with small crystals of Calcite and Gypsum. The specimen comes from a recent find that has been carefully analyzed and determined to be Cinnabar, and despite the fact that Metacinnabar was allegedly found in samples from this find, our analyses have not detected any.


Cocineras Mine, West Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (2019)

Specimen size: 3.7 × 2.6 × 1.8 cm = 1.46” × 1.02” × 0.71”

TC90TD:
Cocineras Mine, West Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (2019)

Specimen size: 4.8 × 3.1 × 2  cm = 1.89” × 1.22” × 0.79”

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

TC110TN: Cinnabar crystals with a dominant rhombohedral shape plus minor crystal forms, translucent, extraordinarily lustrous and with a very vivid color, on matrix with small crystals of Calcite, Quartz and Gypsum. The specimen has been carefully analyzed and determined to be Cinnabar and, although it was suggested that Metacinabar could be found in these specimens too, our analyses have not detected any. We will send a copy of the analysis to the buyer.
Cocineras Mine, West Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (2019)

Specimen size: 6.3 × 3.5 ×3.2 cm = 2.48” × 1.38” × 1.26”

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

TC90TZ: Cinnabar crystals with a dominant rhombohedral shape plus minor crystal forms, translucent, extraordinarily lustrous and with a very vivid color, on matrix with small crystals of Calcite, Quartz. The specimen has been carefully analyzed and determined to be Cinnabar and, although it was suggested that Metacinabar could be found in these specimens too, our analyses have not detected any. We will send a copy of the analysis to the buyer.
Cocineras Mine, West Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (2019)

Specimen size: 6.5 × 2.8 × 2.6 cm = 2.56” × 1.10” × 1.02”

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

TBX56AP7: Dendritic growth of elongated Silver crystals with very marked spinel-law twinning, very aerial and on a Calcite matrix.
The specimen comes from the old collection of Robert-Auguste Touchon.
Batopilas, Andrés del Río District, Municipio Batopilas, Chihuahua  Mexico

Specimen size: 2.3 × 1.5 × 0.9 cm = 0.91” × 0.59” × 0.35”

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

EFR61AN8: Dendritic growths of Silver crystals, with dominant cube and octahedron faces, lustrous and on matrix. The mine of origin of the piece has been credited by a recognized collector of minerals of Mexico.
Batopilas, Andrés del Río District, Municipio Batopilas, Chihuahua  Mexico

Specimen size: 5.9 × 5.5 × 4.5 cm = 2.32” × 2.17” × 1.77”

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

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”

TB89AL3: Botryoidal growth, very aesthetic, of Mimetite with an intense fatty luster and zones of distinct colors that range from an intense lemon-yellow to orange-yellow. A Mexican classic.
San Pedro Corralitos, Municipio Casas Grandes, Chihuahua  Mexico

Specimen size: 3 × 1.5 × 2 cm = 1.18” × 0.59” × 0.79”

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 = 4.02” × 2.72” × 1.57”

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”

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 = 3.39” × 1.77” × 1.26”

Main crystal size: 2.5 × 1.8 cm = 0.98” × 0.71”

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”

TTV14AP4: Complete floater rhombododecahedral crystal of Grossular, translucent and with an intense pink color.
The specimen is from a very classic locality for the species, and comes to us via the Miguel David Martínez collection (number 781), whose label we will send to the buyer.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 2.1 × 2.1 × 2.2 cm = 0.83” × 0.83” × 0.87”

TT13AN1: Floater group of Vesuvianite crystals, one of them clearly dominant and doubly terminated, with the forms of two prism faces and a sharp dipyramid, with bright luster and a yellow-brown color.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Sierra de las Cruces, Sierra Mojada mining district, Municipio Sierra Mojada, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 2.4 × 1.8 × 1.4 cm = 0.94” × 0.71” × 0.55”

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”

MTR47AP3: Very transparent and lustrous Fluorite crystals, with a pale lilac color, on a parallel aggregate of white tabular Celestine crystals.
Tule Mine, Melchor Múzquiz, Municipio Melchor Múzquiz, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 16.1 × 7.9 × 1.4 cm = 6.34” × 3.11” × 0.55”

TFM16AN9: Doubly terminated complete crystal of Adamite with parallel growths. It is translucent, lustrous and pale greenish yellow in 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 stating that it was previously in the Sullivan collection.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 2 × 1.5 × 1.3 cm = 0.79” × 0.59” × 0.51”

Main crystal size: 2 × 1 cm = 0.79” × 0.39”

SM75TDA: Fan-shaped aggregates of well-differentiated Adamite crystals with good terminations, translucent, with great luster and an intense greenish yellow color, on a limonite matrix. A Mexican classic.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 3 × 2 × 1.7 cm = 1.18” × 0.79” × 0.67”

TGG64AN3: Spheroidal aggregates of Adamite crystals with very sharp terminations, translucent, with good luster and an intense yellow color. Very aerial on its limonite matrix.
We will ship the piece 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: 3.1 × 2.5 × 2.2 cm = 1.22” × 0.98” × 0.87”

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

NR27AM5: Fan-shaped groups of fine prismatic Adamite crystals with very well defined faces and edges and with perfect terminations, with bright luster and a very intense yellow color. The specimen is from the Pedro Hernández collection.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 4.5 × 4.4 × 2.6 cm = 1.77” × 1.73” × 1.02”

NTB86AO1: Radial groups of Adamite crystals on limonite matrix, translucent, with good luster and an intense yellow color. A Mexican classic.
The specimen comes from the Carlos Prieto Paramio collection, whose label we will send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 5.5 × 4.4 × 2.4 cm = 2.17” × 1.73” × 0.94”

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

NNP87AO1: Spheroidal growths of Adamite crystals on a limonite matrix, translucent, with a bright luster and intense yellow color with green hues. The specimen, very aerial, has the curiosity of some crystals that seem to be individualized from the group. They are transparent and have very sharp crystal forms.
The specimen comes from the Carlos Prieto Paramio collection, whose label we will send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7.1 ×  3.2 × 1.9 cm = 2.80” × 1.26” × 0.75”

Main crystal size: 1.9 × 1.1 cm = 0.75” × 0.43”

EA91AM4: Groups of very sharp manganese-bearing Adamite crystals on a Goethite matrix. The crystals, translucent, lustrous, and larger than usual, have a pale lilac color in the prism and much more intense on the terminations, a color that has made this variety famous in Mapimí.
Currently considered a Mexican classic, it comes from the Peter Rosewarne collection (number Rc927), whose label we will send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 10 × 8.2 × 5.7 cm = 3.94” × 3.23” × 2.24”

Main crystal size: 1.5 × 1 cm = 0.59” × 0.39”

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”

TBB48AO8: Spheroidal growths of Adamite crystals, on a limonite matrix, with well-defined crystal forms, translucent, lustrous and yellowish green in color (cuproadamite variety)
The specimen comes from an important European collection.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 9.2 × 6.4 × 4 cm = 3.62” × 2.52” × 1.57”

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

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”

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”

MF13AL0: Very sharp crystals more separated from each other than usual. Very bright, translucent, transparent around their terminations, white in color and in a limonite matrix.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7.6 × 4.8 × 4.7 cm = 2.99” × 1.89” × 1.85”

Main crystal size: 2.4 × 0.9 cm = 0.94” × 0.35”

TFL47AN8: Very distinct spheroidal growths of Mottramite, on a limonite matrix, with a silky luster and a very deep olive-green color. The specimen comes from the famous find of November 2011, in which Mottramite was reported for the first time in Mapimí as a collectible species. We will send a copy of the analysis to the buyer.
Ojuela Mine, level 35, Mapimí, Municipio Mapimí, Durango  Mexico (11/2011)

Specimen size: 11.2 × 7.4 × 5.5 cm = 4.41” × 2.91” × 2.17”

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 = 2.52” × 1.81” × 1.10”

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”

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 = 2.87” × 2.76” × 3.15”

Main crystal size: 0.8 × 0.4 cm = 0.31” × 0.16”

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”

EX70AM1: Spheroidal aggregates of acute dipyramidal crystals, orange with slightly yellow tones, on matrix. A Mexican classic.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (1985)

Specimen size: 11.7 × 7.2 × 3.4 cm = 4.61” × 2.83” × 1.34”

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”

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”

TK87AL5: Spheroidal aggregates of Conichalcite crystals with well defined faces and edges, bright and of a uniform and intense green color.
We will send the piece 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 × 2.4 × 1.4 cm = 1.26” × 0.94” × 0.55”

HM110GA: Groups of Conichalcite crystals, with good luster and with a very vivid green color, on a limonite matrix.
Former collection of Pedro Goy. Number 283.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico (±1982)

Specimen size: 7.6 × 5.7 × 3.8 cm = 2.99” × 2.24” × 1.50”

TX66AM5: Malachite as a botryoidal growth on a limonite matrix, with bands of different shades of green. Very characteristic of this mine.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 6.8 × 4.5 × 2.8 cm = 2.68” × 1.77” × 1.10”

ETP37AP6: Groups of Cerussite crystals with very well defined hexagonal twinning, with a flattened habit, transparent and with translucent edges, very lustrous and on matrix.
The Cerussite, a rare species in Mapimí, comes from the collection of Michel Perraudin (number 159), whose label we will send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7.1 × 4.5 × 4 cm = 2.80” × 1.77” × 1.57”

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

NBR27AO8: Twinned Cerussite crystals with very well defined crystal forms, between transparent and translucent, lustrous, and covering a stalactitic growth of limonite. Not so common in this quality from the Ojuela Mine.
It comes from the Santiago Jiménez collection, which not only had specimens from Spain but also a good representation of minerals from all over the world.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7.4 × 4.4 × 2.1 cm = 2.91” × 1.73” × 0.83”

Main crystal size: 1.1 × 0.9 cm = 0.43” × 0.35”

EV67AL9: Group of sharp prismatic crystals, some of them doubly terminated, with good terminal faces, transparent, brilliant and with an intense color that stands out on the limonite matrix. A classic species from Mapimí, increasingly difficult to obtain.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 8 × 5.4 × 2.3 cm = 3.15” × 2.13” × 0.91”

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

TF47AJ4: A very esthetic mineralogical curiosity. Groups of Quartz crystals that substitute for and preserve the morphology of Hemimorphite crystals that have disappeared.
The sample is from the Lee Hogg collection whose label we will send to the buyer.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 12 × 5.7 × 6.8 cm = 4.72” × 2.24” × 2.68”

EX58AM3: Aggregates of acicular Aurichalcite crystals, with good luster and a very vivid color. On a limonite matrix, with small Calcite crystals and black Murdochite crystals, identifiable by the isometric crystal habit typical of the species although to be sure we have had it analyzed and we will send to the buyer copy of the analysis. Altogether a great piece of high quality and very aesthetic, among the best Aurichalcites from Ojuela.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 11.7 × 8.2 × 3.6 cm = 4.61” × 3.23” × 1.42”

Main crystal size: 0.5 × 0.1 cm = 0.20” × 0.04”

MC86AM6: Fluorapatite crystal with very well defined faces and edges, with an unusual transparency and luster and a very vivid and uniform lemon-yellow color. A Mexican classic. We will send the buyer the specimen in its original perky box from the Robert J. Noble collection, which also contains the label.
Cerro de Mercado Mine, Cerro de los Remedios, Victoria de Durango, Municipio Durango, Durango  Mexico

Specimen size: 2.1 × 0.7 × 0.8 cm = 0.83” × 0.28” × 0.31”

TC760TD: A novelty at Tucson 2020. Druse of sharp short prismatic Creedite crystals, with very sharp terminations, with bright luster and a light violet color, on matrix, with crystallized Fluorite that is bicolor green and violet. The specimen is very different from others that have come from this locality in recent years, although some old collections have similar specimens from this mine, which coincides with 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: 7 × 6.3 × 4.2 cm = 2.76” × 2.48” × 1.65”

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

TCX90AP2: Groups of short and very sharp prismatic crystals of Creedite, between transparent and translucent, with a light and uniform lilac color, on matrix. Specimens with this tone and quality are very rare in this Mexican mine.
Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango  Mexico (10-12/2019)

Specimen size: 7.1 × 4.9 × 3.4 cm = 2.80” × 1.93” × 1.34”

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

TE16AL7: A novelty at Tucson 2020. Druse of bipyramidal Creedite crystals with sharp pointed terminations, between transparent and translucent, lustrous, and with a light violet color. On matrix with crystallized green and violet Fluorite. This specimen is quite different from the others known from this locality in recent years, although some old collection have similar specimens from the same place, which coincides with the indications that this find was made in old mine galleries.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineralogical Record’ on page 494 in the volume 51, number 3, May-June 2020
Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango  Mexico (10-12/2019)

Specimen size: 7.2 × 6.6 × 4.9 cm = 2.83” × 2.60” × 1.93”

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

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”

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 = 1.69” × 1.38” × 1.61”

Main crystal size: 1.7 × 1.5 cm = 0.67” × 0.59”

TV27AN1: Group of sharp platy Acanthite crystals with a clearly hexagonal outline (pseudomorph after Polybasite) with a satin luster, on matrix.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label, which shows that it was previously in the Melanson collection.
San Juan de Rayas Mine, Guanajuato, Municipio Guanajuato  Mexico

Specimen size: 2.8 × 2 × 1.3 cm = 1.10” × 0.79” × 0.51”

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

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”

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”

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”

EA87AM3: Intergrowth of twinned Sphalerite crystals with skeletal Galena crystals. On matrix, with small white Quartz crystals and polycrystalline Fluorite growths. Very old and unusual piece.
Los Remedios Mine, Taxco de Alarcón, Municipio Taxco, Guerrero  Mexico

Specimen size: 13.8 × 8.8 × 3.2 cm = 5.43” × 3.46” × 1.26”

Main crystal size: 2 × 1.4 cm = 0.79” × 0.55”

DF87AK9: Group of sharp Quartz crystals (amethyst variety) on matrix, with one of them clearly dominant. Brilliant and with the nucleus of the crystal displaying much more intense color than in the periphery. Not to be confused with the better known ones from Veracruz, these amethysts from Amatitlán are composed of thicker crystals and, unlike those from Veracruz, no new specimens are appearing.
The specimen is from the Daunis collection, whose label we will send to the buyer.
Amatitlán, Municipio Zumpango del Río, Guerrero  Mexico

Specimen size: 11.2 × 7.5 × 3.4 cm = 4.41” × 2.95” × 1.34”

Main crystal size: 10.7 × 2.1 cm = 4.21” × 0.83”

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 = 2.87” × 2.56” × 2.32”

Main crystal size: 1.5 × 0.3 cm = 0.59” × 0.12”

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”

TPQ67AO4: Very aerial group of flattened Miargyrite crystals, with very sharp crystal forms and intense luster.
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: 2.7 × 1.8 × 1.7 cm = 1.06” × 0.71” × 0.67”

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”

TFM87AO4: Very aerial group of flattened Miargyrite crystals, with very sharp crystal forms, intense luster and associated with small Quartz crystals. 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: 4.3 × 2.7 × 2 cm = 1.69” × 1.06” × 0.79”

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”

TPP90AO4: Group of well defined crystals of Acanthite (selenium-bearing variety), lustrous, with skeletal growths of Aguilarite, coatings of Selenopolybasite, cubo-octahedral crystals of Galena and small, darker crystals of Sphalerite. 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: 3.4 × 2.1 × 1.9 cm = 1.34” × 0.83” × 0.75”

Main crystal size: 1.5 × 1 cm = 0.59” × 0.39”

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”

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 = 2.09” × 1.06” × 0.94”

Main crystal size: 1.4 × 0.8 cm = 0.55” × 0.31”

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”

TJK69AO4: Group of Selenopolybasite crystals with a very sharp outline, of good size for the species, lustrous, on a Quartz matrix with Acanthite crystals of cubic habit. 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: 3 × 2.1 × 2 cm = 1.18” × 0.83” × 0.79”

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

TBB90AO4: Group of Aguilarite crystals of very good size for the species and with their characteristic very distinct skeletal growths. With rounded edges and practically completely covered by Covellite.
This high quality 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 × 2.8 × 1.4 cm = 1.10” × 1.10” × 0.55”

Main crystal size: 1.1 × 0.6 cm = 0.43” × 0.24”

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”

TH14AN2: Two very sharp Danburite crystals, with excellent terminations, completely water-clear and very lustrous.
We will send the specimen, from one of the great classic Mexican localities, in its original Perky box from the Robert J. Noble collection, which also contains the label.
Charcas, Municipio Charcas, San Luis Potosí  Mexico

Specimen size: 3.1 × 1.9 × 1 cm = 1.22” × 0.75” × 0.39”

Main crystal size: 3.1 × 1 cm = 1.22” × 0.39”

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”

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 = 1.26” × 0.94” × 0.83”

Main crystal size: 0.9 × 0.5 cm = 0.35” × 0.20”

TFR1AO8: Very aerial Stibiconite pseudomorph after a Stibnite crystal, with perfectly defined crystal forms and excellent terminations. On matrix, covered by pale pink scalenohedra of Calcite.
Real de Catorce (Catorce), Catorce Mountains, Municipio Catorce, San Luis Potosí  Mexico

Specimen size: 15 × 9.1 × 5 cm = 5.91” × 3.58” × 1.97”

Main crystal size: 10 × 1.8 cm = 3.94” × 0.71”

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”

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 = 9.06” × 1.97” × 1.97”

Main crystal size: 22 × 3.6 cm = 8.66” × 1.42”

HM190NJ: Floater growth of sharp Azurite crystals with very well defined faces and edges, translucent and with the extraordinary deep blue color (“electric blue”) typical of the best specimens from Milpillas. With vivid internal reflections and transparent parts under intense light and with coatings of acicular Malachite crystals.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2012)

Specimen size: 3.6 × 2.8 × 1.7 cm = 1.42” × 1.10” × 0.67”

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 = 1.46” × 1.30” × 0.83”

Main crystal size: 2.3 × 1 cm = 0.91” × 0.39”

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”

TC2480TEP: Group of thick lenticular Azurite crystals, with very well defined faces and edges, with the intense luster of Milpillas and the famous deep blue color (“electric blue”) of the best specimens from this locality. It sits on matrix with small coatings of fibrous Malachite. The Milpillas mine was closed in June 2020
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)

Specimen size: 4.6 × 3.8 × 2.3 cm = 1.81” × 1.50” × 0.91”

Main crystal size: 2 × 1.6 cm = 0.79” × 0.63”

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”

TJA71AN4: Aggregate, on matrix, of thick lenticular Azurite crystals with very well defined faces and edges, with the very intense luster of Milpillas specimens, and the famous deep blue color (“electric blue”) of the best specimens from the locality. With small coatings of fibrous Malachite. The Milpillas mine closed in June 2020.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)

Specimen size: 6.2 × 4 × 2 cm = 2.44” × 1.57” × 0.79”

Main crystal size: 2 × 1.2 cm = 0.79” × 0.47”

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”

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 = 3.62” × 2.60” × 1.61”

Main crystal size: 3.2 × 1.2 cm = 1.26” × 0.47”