ET16X1: Two single crystals, one of them clearly dominant, that combine two vertical prisms, a very sharp pinacoid and some smaller forms. The crystals, translucent and with an intense color that is deeper on the terminations and on the edges, are on a matrix of volcanic rock with spheroidal growths of Opal.
Mina Artroyos, Potrillos, Coneto de Comonfort, Durango  Mexico (±1970)

Specimen size: 2.6 × 2.4 × 1.7 cm = 1.02” × 0.94” × 0.67”

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

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”

MA50K1: Very well defined crystals, one of them clearly dominant and of considerable length and with very good color and luster on a matrix which is a Chalcedony formation, uncommon for Cerro de Mercado specimens.
Cerro de Mercado Mine, Cerro de los Remedios, Victoria de Durango, Municipio Durango, Durango  Mexico

Specimen size: 11.2 × 8.5 × 7 cm = 4.41” × 3.35” × 2.76”

Main crystal size: 5.3 × 1.5 cm = 2.09” × 0.59”

TR99AL2: A novelty at Tucson 2020. Druse of short prismatic Creedite crystals, with very sharp and profiled terminal faces, with good luster and light violet, on matrix, with crystallized Fluorite in green and violet colors. The specimen is very different from those known from this locality in recent years, although there are similar specimens from this mine in an old collection, which coincides with the indications that this find came from old mine galleries.
The specimen has been reviewed, photographed and published as a novelty from Tucson 2020 in the Russian magazine ‘Mineral Observer’ on page 60 in the volume 25, number 2

Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango  Mexico (10-12/2019)

Specimen size: 5.5 × 4.3 × 3.2 cm = 2.17” × 1.69” × 1.26”

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

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”

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”

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”

TM26D8: While this locality has produced lots of material and quite often produces good ones, this octahedral Fluorite is really nice. This is due to the crystal size, their definition and the intensity of their color. A major sample for a reasonable price.
Mina Navidad, Abasolo, Rodeo, Municipio de Rodeo, Durango  Mexico (2003)

Specimen size: 12.2 × 10.5 × 3 cm = 4.80” × 4.13” × 1.18”

Main crystal size: 2.9 × 2.4 cm = 1.14” × 0.94”

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”

TP63AI7: Druse of transparent and bright Quartz (amethyst) crystals with very short prisms with strong color zoning and phantom growths. Between the amethyst crystals there are white scalenohedral Calcite crystals. An extraordinary sample, undoubtedly among the best from this well-known locality.
Cata Mine, Guanajuato, Municipio de Guanajuato  Mexico (±1980)

Specimen size: 22.8 × 14.2 × 5.6 cm = 8.98” × 5.59” × 2.20”

Main crystal size: 1.9 × 1.4 cm = 0.75” × 0.55”

FR76: Unusual form: first elongated crystals and then pseudocubic sharp crystals. As in many other cases in this collection, different from the usual.
La Sirena Mine, 590 level, Guanajuato, Municipio Guanajuato  Mexico

Specimen size: 4 × 3.2 × 2.7 cm = 1.57” × 1.26” × 1.06”

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

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”

TF86AH5: Acanthite crystals with the dominant forms of the cube some of whose faces have very deep hollowed growths. One of the more dominant and very aerial crystals is extraordinarily elongated. They are on matrix with Quartz and small and very bright Pyrite crystals.
The sample, a great classic, is from the David and Emily Stoudt collection of Houston, Texas, and previously in the Kenneth C. Raba and Arson collections in New York. We’ll send the three labels to the buyer.
San Juan de Rayas Mine, Guanajuato, Municipio Guanajuato  Mexico

Specimen size: 6.5 × 3.2 × 3.5 cm = 2.56” × 1.26” × 1.38”

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

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

Specimen size: 8.7 × 6.1 × 3.4 cm = 3.43” × 2.40” × 1.34”

Main crystal size: 0.6 × 0.4 cm = 0.24” × 0.16”

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”

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

Specimen size: 2.8 × 1.6 × 1.4 cm = 1.10” × 0.63” × 0.55”

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

TK74AE8: Aggregate of very bright Chalcopyrite crystals, pseudomorphous after Polybasite with a hexagonal contour and partially coated by small cubic Acanthite crystals.
The sample has a great quality and it has been noted and photographed in the monograph “Mexico Special Issue VII” of the Mineralogical Record magazine (September-October 2016, pg. 545)
Guanajuato, Municipio Guanajuato  Mexico

Specimen size: 4.5 × 3.8 × 3.5 cm = 1.77” × 1.50” × 1.38”

EP49AC6: Floater aggregate of transparent and very bright Quartz (variety amethyst) crystals, with phantom growths and with a very vivid and intense color. On the back, the aggregate is completely coated by Calcite and there is a very sharp, white, Calcite scalenohedron.
An excellent sample of the F. y C. Gilbert collection whose label we’ll send to the buyer.
This specimen's photo has been reviewed and published in the magazine ‘Mineralogical Record’ on page 556 in the volume 47, number 5 (September-October 2016)
Guanajuato, Municipio Guanajuato  Mexico (±1960)

Specimen size: 7.4 × 5.5 × 2.6 cm = 2.91” × 2.17” × 1.02”

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 Eduardo Neri, 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”

EB87AM3: 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: 10.9 × 10.4 × 2.9 cm = 4.29” × 4.09” × 1.14”

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”

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

Specimen size: 5.5 × 3.9 × 1.6 cm = 2.17” × 1.54” × 0.63”

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

TD76L5: Group of Legrandite crystals with perfect terminations. Luster, color intensity and transparency increase from the base to the upper termination. On botryoidal Smithsonite and all on a Limonite matrix.
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: 4.7 × 4.5 × 3.2 cm = 1.85” × 1.77” × 1.26”

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

TM87K8: Group of prismatic crystals with uncommon flat terminations. Good color and brilliance making a high contrast with the dark Limonite matrix. The specimen, from the type locality, has a different habit than the more common Mapimí Legrandites.
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: 6 × 3.3 × 1.4 cm = 2.36” × 1.30” × 0.55”

Main crystal size: 0.8 × 0.3 cm = 0.31” × 0.12”

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”

TA47P9: The sample is from the Flor de Peña Mine, the type locality. The small crystals with very well defined faces and edges, form sheaf like growths on a matrix partially coated by botryoidal yellowish-white Smithsonite. Color and luster of the Legrandite crystals are excellent.
Flor de Peña Mine, Lampazos (Lampazos de Naranjo), Municipio Lampazos (Lampazos de Naranjo), Nuevo Leon  Mexico

Specimen size: 8 × 4 × 3.8 cm = 3.15” × 1.57” × 1.50”

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

TC40J7: The short prismatic crystals on dark Smithsonite matrix, that we analyzed, are very sharp and have an unusual transparency for the species. The different groups of crystals have two different shades of yellow. With the specimen we’ll send a copy of the analysis of the Smithsonite.
Flor de Peña Mine, Lampazos (Lampazos de Naranjo), Municipio Lampazos (Lampazos de Naranjo), Nuevo Leon  Mexico

Specimen size: 8.1 × 5.3 × 5.3 cm = 3.19” × 2.09” × 2.09”

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

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”

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”

TRA27AO4: Very aerial group of flattened Miargyrite crystals, with very sharp crystal forms, with intense luster, on a crystalline Quartz matrix.
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: 2.2 × 1.5 × 1.6 cm = 0.87” × 0.59” × 0.63”

Main crystal size: 0.4 × 0.1 cm = 0.16” × 0.04”

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

Specimen size: 2.2 × 2.1 × 1.5 cm = 0.87” × 0.83” × 0.59”

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

TC89AH1: A novelty at Tucson 2018. Group of Miargyrite crystals with an extraordinary definition and length 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: 2.5 × 2.1 × 1.2 cm = 0.98” × 0.83” × 0.47”

Main crystal size: 0.6 × 0.4 cm = 0.24” × 0.16”

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”

TB71AH1: A novelty at Tucson 2018. Aggregate of mixed Miargyrite and Pyrargyrite crystals. The Pyrargyrite crystals are short with flat terminations and the Miargyrite has smooth surfaces with fine striations and very bright crystal faces. 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: 4.2 × 3.7 × 4.1 cm = 1.65” × 1.46” × 1.61”

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”

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

Specimen size: 5.8 × 4.6 × 2.8 cm = 2.28” × 1.81” × 1.10”

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

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”

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”

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

Specimen size: 2.9 × 2.6 × 1.1 cm = 1.14” × 1.02” × 0.43”

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

TB6Z6: 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 form 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: 4.6 × 3.2 × 1.7 cm = 1.81” × 1.26” × 0.67”

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

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”

EM49F4: Two pseudomorphic crystals of Stibiconite after Stibnite, very large, prismatic, and perfect. As is normal in the examples from Mexico, Stibiconite has completely replaced the Stibnite, not just coated it.
Real de Catorce (Catorce), Catorce Mountains, Municipio Catorce, San Luis Potosí  Mexico (±1970)

Specimen size: 19 × 5 × 6 cm = 7.48” × 1.97” × 2.36”

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”

EY7V0: Aggregate of tabular crystals (poker chip habit) with hexagonal shape and triangular growth forms on the pinacoid. They have a very well defined color zoning, white on the terminations and creamy in the center.
San Bartolo Mine, Charcas, Municipio Charcas, San Luis Potosí  Mexico (1970-1980)

Specimen size: 12.6 × 7.8 × 4.6 cm = 4.96” × 3.07” × 1.81”

Main crystal size: 3.6 × 2.6 cm = 1.42” × 1.02”

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”

EG46Y8: Doubly terminated crystals of Fluor-Buergerite on matrix. They show a combination of a dominant ditrigonal prism and rhombohedral terminations. The crystals are very bright, have dark a brown, almost black, color with translucent reflections. The sample, from the type locality for the species, is with a label from John. S. White that indicates it previously was in the Luther Thomas collection. We’ll send both labels to the buyer.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2020, page 62
Municipio Mexquitic de Carmona, San Luis Potosí  Mexico

Specimen size: 6.6 × 5.4 × 3 cm = 2.60” × 2.13” × 1.18”

Main crystal size: 0.8 × 0.5 cm = 0.31” × 0.20”

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”

MC26V1: Doubly terminated crystal on matrix. It has very well defined faces and edges and is transparent, with a very deep color. It also has a small aggregate of Opal (variety hyalite) near its upper termination.
Tepetate, Municipio Villa de Arriaga, San Luis Potosí  Mexico

Specimen size: 3.4 × 3.1 × 2.1 cm = 1.34” × 1.22” × 0.83”

Main crystal size: 2.2 × 0.6 cm = 0.87” × 0.24”