Mineral Specimens - page 2
Mexico - Canada

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

Specimen size: 4.9 × 3.9 × 2.8 cm = 1.93” × 1.54” × 1.10”

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

Specimen size: 9.4 × 8.1 × 5.1 cm = 3.70” × 3.19” × 2.01”

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

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

Specimen size: 10.7 × 8.8 × 5.6 cm = 4.21” × 3.46” × 2.20”

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

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”

SV2440NJE: Doubly terminated, sharp floater crystal of Silver, with a very visible spinel-law twin, skeletal growths, very sharp and profiled, accompanied by groups of isolated Acanthite crystals, one of them dominant.
The specimen, whose locality of origin is a classic for silver minerals, comes from the collection of Ignacio Gaspar Sintes whose handwritten label we will send to the purchaser.
Batopilas, Andrés del Río District, Municipio Batopilas, Chihuahua  Mexico

Specimen size: 3.3 × 0.8 × 0.7 cm = 1.30” × 0.31” × 0.28”

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”

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”

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”

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”

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”

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”

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”

SV3440TPL: An elegant piece from the important discovery made at the Ojuela mine in 2008-2009.
The characteristic elongated Wulfenite crystals are separated from each other and have very good color and luster.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7 × 4.3 × 3 cm = 2.76” × 1.69” × 1.18”

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

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”

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”

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”

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” × 0.16”

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”

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”

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

Specimen size: 3.2 × 2 × 1.8 cm = 1.26” × 0.79” × 0.71”

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

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

Specimen size: 4.4 × 2.5 × 2.9 cm = 1.73” × 0.98” × 1.14”

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

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

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

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

TP66AJ8: Aerial growth of dodecahedral Acanthite crystals, a very unusual form for the species, some of them with “window” growths and partially coated by small Pyrite crystals. The sample has been analyzed, the analytic results indicating a high selenium content. We will send a copy of the analysis to the buyer.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 43 of the 2019/02 edition.
San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (2018)

Specimen size: 6.5 × 4.5 × 3.4 cm = 2.56” × 1.77” × 1.34”

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”

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”

DBX56AP9: Very aerial group of lenticular Azurite crystals. Brilliant and of a very lively color known as “electric blue”, and with a small matrix with growths of Malachite.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2013)

Specimen size: 3.3 × 1.9 × 1.8 cm = 1.30” × 0.75” × 0.71”

Main crystal size: 1.8 × 1 cm = 0.71” × 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”

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

Specimen size: 4.9 × 3.5 × 2.5 cm = 1.93” × 1.38” × 0.98”

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

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

Specimen size: 5 × 2.9 × 2.5 cm = 1.97” × 1.14” × 0.98”

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

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

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

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

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

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

Specimen size: 5.4 × 3.2 × 1.4 cm = 2.13” × 1.26” × 0.55”

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

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

Specimen size: 6.4 × 4.1 × 3.2 cm = 2.52” × 1.61” × 1.26”

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

Specimen size: 7.6 × 7.5 × 1.8 cm = 2.99” × 2.95” × 0.71”

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

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

Specimen size: 10.7 × 10.1 × 5.3 cm = 4.21” × 3.98” × 2.09”

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

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

Specimen size: 4.2 × 4 × 4.7 cm = 1.65” × 1.57” × 1.85”

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

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

Specimen size: 5.6 × 4.3 × 3.3 cm = 2.20” × 1.69” × 1.30”

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

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

Specimen size: 5.7 × 4.4 × 3.2 cm = 2.24” × 1.73” × 1.26”

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

TLM50AP3: Group of very sharp Malachite pseudomorphs after Azurite crystals, on matrix, with very flattened crystal forms and lenticular shapes, with good luster and a very deep color.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico

Specimen size: 5.8 × 3.3 × 3.6 cm = 2.28” × 1.30” × 1.42”

Main crystal size: 3.7 × 2.4 cm = 1.46” × 0.94”

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

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

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

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

Specimen size: 7.7 × 5.7 × 7.4 cm = 3.03” × 2.24” × 2.91”

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

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

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

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

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

Specimen size: 11.7 × 9.2 × 4.8 cm = 4.61” × 3.62” × 1.89”

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

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

Specimen size: 12 × 9.2 × 3.3 cm = 4.72” × 3.62” × 1.30”

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

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

Specimen size: 12.3 × 9.1 × 3.8 cm = 4.84” × 3.58” × 1.50”

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

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

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

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

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

Specimen size: 9.5 × 6.3 × 3.3 cm = 3.74” × 2.48” × 1.30”

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

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

Specimen size: 2.1 × 1 × 1.1 cm = 0.83” × 0.39” × 0.43”

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

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

Specimen size: 3.3 × 3.1 × 2.6 cm = 1.30” × 1.22” × 1.02”

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

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

Specimen size: 5 × 3.4 × 1.7 cm = 1.97” × 1.34” × 0.67”

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

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

Specimen size: 5.6 × 5 × 2.5 cm = 2.20” × 1.97” × 0.98”

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

TC190TG: Very sharp Cuprite crystals, dominated by the octahedron and the cube and beveled by the dodecahedron and with very well defined faces and edges. The crystals, which are on a matrix of rock and massive Cuprite, are translucent and have a deep red color partially masked by their extraordinary luster.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2015-01/2016)

Specimen size: 5.7 × 3.3 × 2.1 cm = 2.24” × 1.30” × 0.83”

Main crystal size: 0.5 × 0.3 cm = 0.20” × 0.12”

BBT94AO8: Druse with very sharp Cuprite crystals with the dominant octahedron and with smaller forms of the rhombododecahedron and the cube, translucent, with great luster and a bright red color. On matrix and with white fibrous aggregates of Dickite. With better color and luster than usual, it is of great quality for the locality.
It comes from an important European collection.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (12/2015-01/2016)

Specimen size: 7.5 × 4.2 × 2.8 cm = 2.95” × 1.65” × 1.10”

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

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

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

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

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

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

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

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

Specimen size: 1.3 × 1 × 0.9 cm = 0.51” × 0.39” × 0.35”

XM145TC: Groups of Volborthite crystals with two different morphologies: acicular and flattened. The very lustrous and deep olive-green crystals sit on a Dickite matrix. Milpillas Volborthite specimens are considered the best of the species due to their quality, luster and crystal size, and set a new standard for the species.
Milpillas Mine, level 26, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (04/2015)

Specimen size: 3 × 2.2 × 2.1 cm = 1.18” × 0.87” × 0.83”

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

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”

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”

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”

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”

HM180TF: These Opals (variety hyalite) appeared for first time during the Tucson Show 2014. Botryoidal nodule very aesthetic and transparent, which shows fluorescence even in daylight, on matrix. In fact it fluoresces under almost any type of light: LED, fluorescent, daylight, and of course also with ultraviolet light. The only light with which they do not react is with incandescent bulbs.

Zacatecas  Mexico

Specimen size: 2.3 × 2.2 × 1.6 cm = 0.91” × 0.87” × 0.63”

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

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

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

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

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

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

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

MFX66AP6: Dendritic growths of Gold crystals, very shiny, on a Quartz matrix, with growths of Sphalerite microcrystals.
The Sphalerite has been analyzed and we will send a copy of the analysis to the buyer.
Timmins Mine, Township, Timmins area, Cochrane District, Ontario  Canada

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

BFR74AP1: Druse of twinned Lazulite crystals with very well defined faces and edges, translucent, with good luster and an intense color. With small water-clear Quartz crystals and rhombohedral Siderite crystals. Of higher quality than usual in this deposit.
Crosscut Creek, Kulan Camp area, Rapid Creek area, Dawson mining district, Yukon Territory  Canada (07/1995)

Specimen size: 10.5 × 7.1 × 2.9 cm = 4.13” × 2.80” × 1.14”

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

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

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

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