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

Specimen size: 0.8 × 0.8 × 0.3 cm = 0.31” × 0.31” × 0.12”

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

Specimen size: 1 × 0.6 × 0.2 cm = 0.39” × 0.24” × 0.08”

TX36AJ4: Aggregate of crystals whose shape is between tapered and fibrous, very well defined for this very uncommon vanadate, with a yellowish-green color and on matrix. A rarity from Milpillas. The sample has been analyzed and we will send a copy of this analysis to the buyer.
The sample has been noted and photographed in the monograph 'The Milpillas Mine' of the ‘Mineralogical Record‘ magazine on page 616 in the volume 52, number 5, September-October 2021
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 1 × 0.7 × 0.6 cm = 0.39” × 0.28” × 0.24”

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

Specimen size: 1.1 × 0.6 × 0.5 cm = 0.43” × 0.24” × 0.20”

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

Specimen size: 1.1 × 1 × 0.9 cm = 0.43” × 0.39” × 0.35”

TB56AD0: A novelty at Tucson 2016. Aggregate of crystals whose shape is between tapered and fibrous, very well defined for this very uncommon vanadate, with a yellowish-green color and on matrix, with Malachite. A new rarity from Milpillas. The sample has been analyzed and we’ll send a copy of this analysis to the buyer.
This specimen has been reviewed and published in the special "Milpillas" of the magazine ‘Lapis’ number 07-08/2017, page 38
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2015)

Specimen size: 1.8 × 1.1 × 0.4 cm = 0.71” × 0.43” × 0.16”

TC340VA: A rarity at Milpillas. Aggregates of spindled to fibrous Vésigniéite crystals, relatively sharp for this very rare vanadate. They are yellowish green in color and are on matrix together with Malachite. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2010)

Specimen size: 6.4 × 3.8 × 3.1 cm = 2.52” × 1.50” × 1.22”

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

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

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

HM320TF: Spherulitic growths and felted aggregates of Shattuckite, with a very intense and deep color, surrounded by small Quartz crystals that protect them. They occur on a Quartz matrix and have Chrysocolla coatings. We highlight the presence of crystallized Quartz, a very rare species in Milpillas.
We will send the buyer a copy of the Shattuckite analysis.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 5.3 × 3.9 × 3.1 cm = 2.09” × 1.54” × 1.22”

TR53AL2: A novelty at Tucson 2019. Spherulitic growths and felted aggregates of Shattuckite, with an extraordinarily intense and deep color, encompassed in small Quartz crystals that protect them. On Quartz matrix, with Chrysocolla. We highlight, apart from the beauty of the specimen, the presence of crystallized Quartz, a very rare species in Milpillas. We will send the buyer a copy of the Shattuckite analysis.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 5.8 × 3.8 × 2.7 cm = 2.28” × 1.50” × 1.06”

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

TG99AL1: A novelty at Tucson 2019. Spherulitic growths and felty aggregates of Shattuckite, with intense and deep color, enclosed in small Quartz crystals that protect them. In Quartz matrix, with Chrysocolla and centered aggregates of acicular Malachite crystals. We emphasize, apart from the beauty of the specimen, the presence of Quartz crystals, a very rare species in Milpillas. We will send the buyer a copy of the Shattuckite analysis.
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

Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 6.7 × 5.1 × 1.9 cm = 2.64” × 2.01” × 0.75”

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

TP98AL1: A novelty at Tucson 2019. Spherulitic growths and felty aggregates of Shattuckite, with intense and deep color, enclosed in small Quartz crystals that protect them, in Quartz matrix. We highlight, apart from the beauty of the specimen, the presence of Quartz crystals, a very rare species in Milpillas. We will send the buyer a copy of the Shattuckite analysis.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 7.5 × 4.8 × 1.7 cm = 2.95” × 1.89” × 0.67”

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

TC69AL7: A novelty at Tucson 2019: Spherulitic growths and felty aggregates of Shattuckite with an intense deep color, encompassed in small Quartz crystals that protect them. On matrix with light blue Shattuckite. We highlight, apart from the beauty of the specimen, the presence of crystallized Quartz, a very rare species in Milpillas. We will send the buyer a copy of the Shattuckite analysis.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 7.8 × 7.1 × 3.9 cm = 3.07” × 2.80” × 1.54”

TV52AL2: A novelty at Tucson 2019. Spherulitic growths and felted aggregates of two generations of Shattuckite with different shades of blue, the second one more intense and deep, encompassed in small Quartz crystals that protect them. On Quartz matrix, with Chrysocolla and Malachite. We highlight, apart from the beauty of the specimen, the presence of crystallized Quartz, a very rare species in Milpillas. We will send the buyer a copy of the Shattuckite analysis.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 8 × 5.3 × 3.8 cm = 3.15” × 2.09” × 1.50”

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

TC63AJ2: A novelty at Tucson 2019. Shattuckite surfaces with two concentric generations, a first one felted and with a very intense deep color, and a second one botryoidal with a sky blue color. The first one is included in very bright Quartz crystals on a matrix partially coated by pale green Chrysocolla. As well as their beauty, we must note that, as a novelty, the presence of the well-crystallized Quartz at Milpillas is very rare.
We’ll send a copy of the analysis of the Shattuckite to the buyer.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 8.5 × 5.7 × 1.9 cm = 3.35” × 2.24” × 0.75”

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

TB14AJ2: A novelty at Tucson 2019. Shattuckite surfaces with two concentric generations, a first one felted and with a very intense deep color, and a second one botryoidal with a sky blue color. The first one is included in very bright Quartz crystals on a matrix partially coated by pale green Chrysocolla. As well as their beauty, we must note that, as a novelty, the presence of the well-crystallized Quartz at Milpillas is very rare.
We’ll send a copy of the analysis of the Shattuckite to the buyer.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2019, page 78
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 9.7 × 6.2 × 2.2 cm = 3.82” × 2.44” × 0.87”

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

TT52AL2: A novelty at Tucson 2019. Spherulitic growths and felted aggregates of Shattuckite, with an intense and deep color and encompassed in small Quartz crystals that protect them. On Quartz matrix, with Chrysocolla and Malachite. We highlight, apart from the beauty of the specimen, the presence of crystallized Quartz, a very rare species in Milpillas. We will send the buyer a copy of the Shattuckite analysis.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 10.5 × 5.6 × 2.2 cm = 4.13” × 2.20” × 0.87”

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

TA36AJ2: A novelty at Tucson 2019. Shattuckite surfaces with two concentric generations, a first one felted and with a very intense deep color, and a second one botryoidal with a sky blue color. The first one is included in very bright Quartz crystals on a matrix partially coated by pale green Chrysocolla. As well as their beauty, we must note that, as a novelty, the presence of the well-crystallized Quartz at Milpillas is very rare.
We’ll send a copy of the analysis of the Shattuckite to the buyer.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2019)

Specimen size: 11 × 8.7 × 1.6 cm = 4.33” × 3.43” × 0.63”

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

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

Specimen size: 12 × 7.2 × 1.7 cm = 4.72” × 2.83” × 0.67”

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

TN26AL4: Complex Pyrite crystal, very rich in faces, that is colored black due to a uniform Chalcocite coating, with good luster and on matrix. We will deliver the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label. The Chalcocites were analyzed and we will send a copy of that analysis to the buyer.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)

Specimen size: 2.8 × 2.6 × 2.4 cm = 1.10” × 1.02” × 0.94”

Main crystal size: 1.8 × 0.9 cm = 0.71” × 0.35”

TD16AD0: A novelty at Tucson 2016 (but found in 2013). Complex Pyrite crystal, very rich in faces that are black colored due to a uniform Chalcocite coating, very bright and on matrix, with small (not coated) Pyrite crystals.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)

Specimen size: 5.7 × 5.7 × 3.7 cm = 2.24” × 2.24” × 1.46”

Main crystal size: 1.9 × 1.8 cm = 0.75” × 0.71”

TB46AD0: A novelty at Tucson 2016 (but found in 2013). Complex Pyrite crystal, very rich in faces that are black colored due to a uniform Chalcocite coating, very bright and on matrix, with small (not coated) Pyrite crystals.
This specimen has been reviewed and published in the special "Milpillas" of the magazine ‘Lapis’ number 07-08/2017, page 26
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)

Specimen size: 8.4 × 5.7 × 4.8 cm = 3.31” × 2.24” × 1.89”

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

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

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

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

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

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

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

TX46AB3: Olive-green Tangeite microcrystals on an aggregate of Malachite crystals pseudomorphous after Azurite. The sample, representing the best known for this rare copper and calcium vanadate, has been analyzed, the result that Tangeite is a new species for Milpillas.
We will send a copy of the analysis to the buyer.
This specimen has been reviewed and published in the special "Milpillas" of the magazine ‘Lapis’ number 07-08/2017, page 36 and in the monograph 'The Milpillas Mine' of the ‘Mineralogical Record‘ magazine on page 615 in the volume 52, number 5, September-October 2021
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2010)

Specimen size: 19.3 × 13.5 × 5.2 cm = 7.60” × 5.31” × 2.05”

EH66Y4: Radial aggregates of salmon pink acicular crystals. They are on a Quartz matrix, with small dodecahedral Grossular crystals. The color of this Clinozoisite is very unusual and very typical of this Mexican locality.
Álamos, Municipio Álamos, Sonora  Mexico

Specimen size: 5 × 3.9 × 2.1 cm = 1.97” × 1.54” × 0.83”

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

Specimen size: 1.7 × 1.4 × 1.2 cm = 0.67” × 0.55” × 0.47”

TA88F3: The branch is formed of a tight group of small crystals, but some of them have perfectly defined faces. Gold from this locality is also not at all common, which makes this one even more interesting.
Municipio Álamos, Sonora  Mexico

Specimen size: 2.5 × 1.8 × 0.6 cm = 0.98” × 0.71” × 0.24”

TC53AL6: Group of lamellar crystals of Wulfenite, on matrix, with very well defined faces, transparent, bright, uniform orange in color and partially covered with very intense and deep orange spheroidal Mimetite aggregates. A Mexican classic.
San Francisco Mine, Cerro Prieto, Cucurpe, Municipio Cucurpe, Sonora  Mexico

Specimen size: 6.7 × 6 × 3.6 cm = 2.64” × 2.36” × 1.42”

Main crystal size: 1.4 × 1.2 cm = 0.55” × 0.47”

ET27AM4: Very sharp crystals of Wulfenite, rich in crystal forms, transparent, with a bright luster and more intense orange color than usual. On a limonite matrix with yellowish green microcrystals of Mimetite.
San Francisco Mine, Cerro Prieto, Cucurpe, Municipio Cucurpe, Sonora  Mexico

Specimen size: 8.3 × 5.7 × 2.9 cm = 3.27” × 2.24” × 1.14”

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

NV67AN0: Spheroidal aggregates on a matrix of very sharp crystals of Emmonsite, a rare iron tellurate, translucent, with good luster and an intense and uniform green color.
The specimen comes from the Ignacio Gaspar Sintes collection (number EMM-2) whose collection card we will send to the buyer.
Moctezuma Mine (Bambolla Mine), Moctezuma, Municipio Moctezuma, Sonora  Mexico

Specimen size: 5.8 × 3.5 × 4 cm = 2.28” × 1.38” × 1.57”

TY48AL4: Tellurite crystals on matrix, some of them with well defined faces and edges and good terminations, something rare in this species, not frequent in collections. The crystals, translucent, have an intense creamy color and good luster, and are implanted on matrix, with Quartz.
The specimen, which comes from Scott J. Williams, was later in the collection of V.J. Hoffmann. Victor J. Hoffmann and John S. White were very close friends while both were graduate students in geology at the University of Arizona. Between the years of 1960 and 1962 they formed a mineral business which was named Delmann Minerals. We will send the specimen with the two supporting labels.
Moctezuma Mine (Bambolla Mine), Moctezuma, Municipio Moctezuma, Sonora  Mexico

Specimen size: 3.4 × 2.7 × 2.4 cm = 1.34” × 1.06” × 0.94”

Main crystal size: 1.8 × 0.4 cm = 0.71” × 0.16”

EA68Y4: Laminar, skeletal and spongy Gold growths. The color and luster, both are very intense, contrast with the Quartz matrix that in some areas is well crystallized and shows a good development of pyramidal faces. The locality is very unusual.
Municipio Nacozari de García, Sonora  Mexico

Specimen size: 4.3 × 3.9 × 2.7 cm = 1.69” × 1.54” × 1.06”

TG97N0: A curious pseudomorph in which Turquoise completely replaces Apatite but clearly preserving the shape and the forms of the prism and the pyramid of the pre-existing Apatite crystal.
Mina la Caridad, La Caridad, Nacozari Garcia, Sonora, Sonora  Mexico

Specimen size: 6.7 × 4.7 × 4.3 cm = 2.64” × 1.85” × 1.69”

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

Specimen size: 8.2 × 6 × 4.9 cm = 3.23” × 2.36” × 1.93”

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

MC6AM9: Scepter growth of a doubly terminated Quartz crystal, amethyst variety, transparent, with inclusions and phantoms. It has very bright luster and a uniform violet color.
We will send the specimen, which comes from the Robert J. Noble collection, in its original Perky box from that collection, which also contains the label.
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 2.8 × 1.1 × 1 cm = 1.10” × 0.43” × 0.39”

Main crystal size: 2.2 × 1 cm = 0.87” × 0.39”

HA7N4: Group of crystals, some of them doubly terminated and some with scepter growths but all them with good transparency, color zoning and excellent luster. They are on matrix.
The sample is from Martí Rafel collection whose label will be sent to the buyer.
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 4.4 × 3 × 3 cm = 1.73” × 1.18” × 1.18”

Main crystal size: 2.6 × 0.8 cm = 1.02” × 0.31”

TB7B6: Sharp crystal with a deep color on a small matrix of Epidote, but the highlight of this specimen are the series of phantoms close to the top of the specimen. It is as good as it looks (or maybe even better)
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 6 × 3 cm = 2.36” × 1.18”

TR67Y3: Group of crystals, one of them clearly dominant and partially doubly terminated, transparent, with a very uniform color and on a matrix of Calcite crystals, very uncommon with Las Vigas samples.
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 6.2 × 4.1 × 4.7 cm = 2.44” × 1.61” × 1.85”

Main crystal size: 2.9 × 1.5 cm = 1.14” × 0.59”

TY96P1: A very esthetic group of crystals on matrix. The crystals have very well defined faces and edges and are very transparent, bright and a uniform and intense color.
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 6.3 × 4.4 × 3.7 cm = 2.48” × 1.73” × 1.46”

Main crystal size: 2.4 × 1 cm = 0.94” × 0.39”

TF48AN2: Group of Quartz crystals (amethyst variety) totally or partially doubly terminated, transparent, with great luster and a very vivid and uniform color. A very elegant and aesthetic specimen.
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 8.2 × 6 × 2.7 cm = 3.23” × 2.36” × 1.06”

Main crystal size: 5.8 × 1.6 cm = 2.28” × 0.63”

BXF92AP4: Druse on matrix of transparent Quartz crystals (amethyst variety), with very bright luster and an intense violet color. There is Epidote on the matrix, very characteristic of old specimens.
The specimen comes from an important European collection.
Piedra Parada (Las Vigas), Municipio Tatatila, Veracruz (Veracruz de Ignacio de la Llave)  Mexico

Specimen size: 14.8 × 12.5 × 2.7 cm = 5.83” × 4.92” × 1.06”

Main crystal size: 2.6 × 1.4 cm = 1.02” × 0.55”

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

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

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

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

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

Specimen size: 3.9 × 1.4 × 1.8 cm = 1.54” × 0.55” × 0.71”

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

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

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

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

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

Specimen size: 2.3 × 2 × 1.4 cm = 0.91” × 0.79” × 0.55”

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

TE87AM0: Group of sharp doubly terminated Pyrargyrite crystals with prismatic habit. Clearly hexagonal in outline, with good terminations, very lustrous and on matrix.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Proaño Mine, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 2.4 × 2.3 × 2 cm = 0.94” × 0.91” × 0.79”

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

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

Specimen size: 2.8 × 1.7 × 2.2 cm = 1.10” × 0.67” × 0.87”

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

MY99AC8: Rounded aggregates of short prismatic Pyrargyrite crystals with very well defined faces and edges and some of them are doubly terminated. They are reddish and are on a matrix with spheroidal aggregates of small scalenohedral Calcite and Quartz crystals. A Mexican classic.
Proaño Mine, Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 5.7 × 5.3 × 5.1 cm = 2.24” × 2.09” × 2.01”

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

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

Specimen size: 8.5 × 7.4 × 3.4 cm = 3.35” × 2.91” × 1.34”

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

Specimen size: 3 × 1.6 × 1.3 cm = 1.18” × 0.63” × 0.51”

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

NM91AM9: Very individualized Stephanite crystals, relatively complex and with very well defined faces and edges. Lustrous, and on a matrix with translucent white Quartz crystals that give a nice contrast to the piece. An excellent and rare Mexican classic that comes from the Ignacio Gaspar Sintes collection (number PIR-11), the label of which we will send to the buyer, as well as a copy of the analysis carried out. This specimen previously resided at the Arizona Desert Museum, and in Gregory, Bottley & Lloyd, and in two other private, unidentified collections.
Fresnillo de González Echeverría (Fresnillo), Municipio Fresnillo, Zacatecas  Mexico

Specimen size: 9 × 7 × 3 cm = 3.54” × 2.76” × 1.18”

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