Pre-Ste. Marie 2020 (virtual)

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Carles Curto Text: Carles Curto (formerly curator of the Geology Museum, Barcelona) & Jordi Fabre
Assistance from John S. White (former Smithsonian curator) John S. White


USA

Neptunite
Neptunite. Neptunite.
 

TM47AL4: Neptunite crystals with sharp terminations and on a rock matrix covered by white Natrolite. Prismatic crystals, shiny and free of damage, stand out for their aerial position on the matrix. A classic.
We will deliver the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
California State Gem Mine (Benitoite Gem Mine), San Benito River headwaters area, Santa Rita Peak, New Idria District, San Benito County, California  USA

Specimen size: 3 × 2.8 × 1.6 cm = 1.18” × 1.10” × 0.63”

Main crystal size: 1.5 × 0.4 cm = 0.59” × 0.16”

Former collection of Bob Noble

minID: C8Y-JC5



Rutile (variety sagenite) with Siderite and limonite
Rutile (variety sagenite) with Siderite and limonite  

CT76AL4: Reticular aggregate (sagenite variety) of twinned, translucent, lustrous red crystals of Rutile with intense reflections, on matrix of partially limonitized former rhombohedral Siderite crystals.
The specimen comes from the Carles Curto collection, whose label and catalogue information we will send to the buyer.
Boiling Springs, Cleveland County, North Carolina  USA

Specimen size: 5.8 × 5.7 × 2.3 cm = 2.28” × 2.24” × 0.91”

Main crystal size: 1.4 × 0.1 cm = 0.55” × 0.04”

Former collection of Carles Curto (duplicates)

minID: 2M1-6MD



Rutile (variety sagenite) with Siderite and limonite. Rutile (variety sagenite) with Siderite and limonite.
Tetrahedrite
Tetrahedrite. Tetrahedrite.
 

TF27AL4: Group of very sharp Tetrahedrite crystals with well defined interpenetration twins.
The specimen, from a locality little known for the species, comes from the Robert J. Noble collection and we will deliver it in its original Perky box, which also contains the label.
Daly-Judge Mine, Wasatch Mountains, Park City District, Summit County, Utah  USA

Specimen size: 2.9 × 2.6 × 2.1 cm = 1.14” × 1.02” × 0.83”

Main crystal size: 1.5 × 1.4 cm = 0.59” × 0.55”

Former collection of Bob Noble

minID: T02-UX1



Rosasite
 

TP6AL4: Spheroidal aggregates of Rosasite, one of them clearly dominant, very deep and uniform in color, on matrix and with botryoidal Goethite.
We will deliver the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Silver Bill Mine, Costello Mine group, Gleeson, Turquoise District, Dragoon Mountains, Cochise County, Arizona  USA

Specimen size: 3.4 × 2.4 × 0.8 cm = 1.34” × 0.94” × 0.31”

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

Former collection of Bob Noble

minID: Y27-TT4



Rosasite. Rosasite.
Azurite
Azurite. Front
Front
Azurite. Rear
Rear
Azurite.

Fluorescent light (daylight)
Azurite
 

TB27AL4: Druse of lustrous lenticular crystals, with an intense and vivid color, which formed as the last phase of concentric growths of the Azurite, forming fine layers of different intensity of color.
An American classic, with a label from the Anthony J. Albini collection and another from Schortmann’s that we will send with the specimen.
Bisbee, Warren District, Mule Mountains, Cochise County, Arizona  USA

Specimen size: 8.2 × 5.6 × 4.6 cm = 3.23” × 2.20” × 1.81”


minID: NE9-G3C



Wulfenite with Calcite

Fluorescent light (daylight)
 

MX470AL4: Wulfenite crystals very rich in crystalline forms, well individualized, with a very intense and uniform color and good luster, on matrix and with small rhombohedral Calcite crystals. Excellent example of a classic American locality, from an old collection whose label we will send to the buyer.
Red Cloud Mine, Trigo Mountains, Silver District, La Paz County, Arizona  USA

Specimen size: 8.6 × 6.1 × 2.7 cm = 3.39” × 2.40” × 1.06”

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


minID: QWD-3FK



Wulfenite with Calcite. Wulfenite with Calcite.
Wulfenite with Calcite. Wulfenite with Calcite.

MEXICO

Silver
Silver. Front
Front
Silver. Rear
Rear
Silver  

CP66AL4: Aggregate of cubic Silver crystals with small octahedron faces, some of them quite sharp, with very well defined crystalline shapes and others somewhat more rounded.
The specimen comes from the Carles Curto collection, whose label and catalogue information we will send to the buyer.
Encantada Mine, La Encantada, Municipio Melchor Múzquiz, Coahuila (Coahuila de Zaragoza)  Mexico

Specimen size: 2.4 × 2.3 × 1.5 cm = 0.94” × 0.91” × 0.59”

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

Former collection of Carles Curto (duplicates)

minID: DRC-4DK



Smithsonite after Calcite with Calcite
 

TX26AL4: Smithsonite as pseudomorphic growths after scalenohedral Calcite crystals. The specimen shows the growth of a successive series of layers that indicate that the Calcite was partially replaced in a first phase, then later ended up being totally replaced by Smithsonite, and with Calcite crystallizing again in a final phase, in the form of small white rhombohedral crystals.
San Antonio Mine (San Antonio el Grande Mine), level 8, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (04/2013)

Specimen size: 4.4 × 2.7 × 3.1 cm = 1.73” × 1.06” × 1.22”

Main crystal size: 2.2 × 1.4 cm = 0.87” × 0.55”


minID: 44D-RNT



Smithsonite after Calcite with Calcite. Front
Front
Smithsonite after Calcite with Calcite. Side
Side
Smithsonite after Calcite with Calcite
Smithsonite after Calcite with Calcite. Front
Front
Smithsonite after Calcite with Calcite. Rear
Rear
 

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

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

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


minID: FEM-FUV



Smithsonite after Calcite with Calcite
 

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

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

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


minID: 5RP-453



Smithsonite after Calcite with Calcite. Front
Front
Smithsonite after Calcite with Calcite. Rear
Rear
Austinite
Austinite. Austinite.
Austinite.
Austinite  

TD89AL4: Globular growths of lenticular Austinite crystals, with sharp crystal forms and strong curvatures on the faces and edges, translucent and on a limonite matrix.
The specimen comes from the Rock Currier collection (No. 7994) with a collection label and an identifying note on the back of the specimen.
Ojuela Mine, Mapimí, Municipio Mapimí, Durango  Mexico

Specimen size: 7.9 × 5.4 × 4.8 cm = 3.11” × 2.13” × 1.89”

Minor fluorescence long UV

Former collection of Rock Currier

minID: F8P-PF0



Azurite

Fluorescent light (daylight)
 

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”


minID: U4W-224



Azurite. Front
Front
Azurite. Rear
Rear
Azurite.
Tellurite with Quartz
Tellurite with Quartz. Tellurite with Quartz.
 

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”


minID: VYU-10V



Chalcocite on Pyrite
 

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”

Former collection of Bob Noble

minID: LAV-NA3



Chalcocite on Pyrite. Chalcocite on Pyrite.
Brochantite
Brochantite. Brochantite.
 

TN87AL4: Aggregate of idiomorphic Brochantite crystals, with sharp faces and edges, very deep color, covered by a later growth, of very aerial fibrous crystals, lighter in color and with a satin luster.
We will send the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico

Specimen size: 3.2 × 2.1 × 1.4 cm = 1.26” × 0.83” × 0.55”

Main crystal size: 2.5 × 0.6 cm = 0.98” × 0.24”

Former collection of Bob Noble

minID: ANX-ALA



Brochantite with Dickite

Fluorescent light (daylight)
 

TR51AL4: Two complete Brochantite crystals, isolated and extraordinarily well defined, with sharp crystal forms, chisel-like terminations, implanted on matrix with white growths of Dickite, an aluminum silicate. Both the excellent definition and size of the crystals as well as the color, the luster and, in general, their extraordinary quality, place this type of specimen among the best in the world.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (07-08/2014)

Specimen size: 4.6 × 4.2 × 3.2 cm = 1.81” × 1.65” × 1.26”

Main crystal size: 2 × 0.9 cm = 0.79” × 0.35”


minID: LGP-KRT



Brochantite with Dickite. Front
Front
Brochantite with Dickite. Side
Side
Malachite after Azurite with Malachite
Malachite after Azurite with Malachite. Front
Front
Malachite after Azurite with Malachite. Side
Side
Malachite after Azurite with Malachite.

Fluorescent light (daylight)
 

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”


minID: P7T-HMP




CANADA

Silver
Silver  

CC56AL4: Aggregates of very elongated, fibrous Silver crystals, some of them with pronounced curvatures and fine dendritic growths and with small, poorly defined, Acanthite crystals.
The specimen comes from the Carles Curto collection, whose label and catalogue information we will send to the buyer.
Keeley-Frontier Mine, South Lorrain Township, Cobalt-Gowganda Region, Timiskaming District, Ontario  Canada (±1966)

Specimen size: 2.1 × 2 × 1.2 cm = 0.83” × 0.79” × 0.47”

Former collection of Carles Curto (duplicates)

minID: RE1-M66



Silver. Front
Front
Silver. Rear
Rear
Quartz (japan law twin)
Quartz (japan law twin). Quartz (japan law twin).
 

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”


minID: L0A-9DR



Wardite with Childrenite
 

MA14AL4: Clusters of very sharp Wardite crystals with a dipyramidal habit, translucent with transparent points, from white to pale green. On matrix, with coatings of small Childrenite crystals with an intense brown color.
Rapid Creek area, Dawson mining district, Yukon Territory  Canada (07/1995)

Specimen size: 5.2 × 3.7 × 2.8 cm = 2.05” × 1.46” × 1.10”

Main crystal size: 0.9 × 0.8 cm = 0.35” × 0.31”


minID: 88Y-4WQ



Wardite with Childrenite. Wardite with Childrenite.

SPAIN

Yuanfuliite with Hematite, Calcite and Diopside
Yuanfuliite with Hematite, Calcite and Diopside. Yuanfuliite with Hematite, Calcite and Diopside.
 

NH59AL4: Felted aggregates of acicular Yuanfuliite crystals, honey-colored, with good luster, on a rock matrix (lamproite), with Hematite, Diopside and white spheroidal growths of Calcite. Yuanfuliite is a rare borate, identified as a new species in 1994 and well referenced in Jumilla by Miguel Calvo in 2012 (Minerales y Minas de España, vol. 5, pp. 649-650)
Nuestra Señora del Carmen Mines, La Celia, Jumilla, Comarca Altiplano, Region of Murcia (Murcia)  Spain (12/03/2016)

Specimen size: 5.3 × 4.2 × 2.4 cm = 2.09” × 1.65” × 0.94”


minID: 744-XRM



Copper with Malachite
 

NF14AL4: Very aerial dendritic growth of deformed Copper crystals, totally covered by Malachite. Of good quality for the deposit, where this type of Copper specimen with Malachite is scarce.
Herrerías Mines, Puebla de Guzmán, Comarca El Andévalo, Huelva, Andalusia  Spain (2015)

Specimen size: 5.8 × 2.9 × 0.7 cm = 2.28” × 1.14” × 0.28”


minID: XG6-L29



Copper with Malachite. Front
Front
Copper with Malachite. Rear
Rear
Copper with Malachite. Side
Side
Goethite
Goethite. Front
Front
Goethite. Rear
Rear
Goethite.
 

MN37AL4: Compared to other Goethites from southern Spain, those from the La Lapilla Mine stand out for their delicate network growths and finely arched structures, sometimes almost filamentous, added to that their quality and luster and their faint iridescence in pastel tones of ocher, green, intense bluish, and pink, on predominantly greyish metallic reflections.
We will send the Fermín Clemente collection label to the buyer of the specimen.
La Lapilla Mine, La Lapilla, Alosno, Comarca El Andévalo, Huelva, Andalusia  Spain (04/2008)

Specimen size: 6.8 × 4.7 × 3.1 cm = 2.68” × 1.85” × 1.22”

Former collection of Fermín Clemente

minID: 0M5-G8R



Quartz (variety amethyst) with Quartz (variety smoky) with Microcline
 

MX47AL4: Staggered uniaxial growth of amethystine Quartz crystals, with violet shades of different intensity, denser at the points, superimposed as a scepter on a smoky Quartz crystal. The specimen comes from a site worked during construction of the AVE high speed train line, where it is currently impossible to find new quality specimens.
Soliva Quarry (AVE Quarry works), Can Sala, Riudarenes, Comarca La Selva, Gerona / Girona, Catalonia / Catalunya  Spain (2004)

Specimen size: 12.4 × 6.4 × 5.6 cm = 4.88” × 2.52” × 2.20”

Main crystal size: 3.6 × 2.5 cm = 1.42” × 0.98”


minID: FC8-RUM



Quartz (variety amethyst) with Quartz (variety smoky) with Microcline. Front
Front
Quartz (variety amethyst) with Quartz (variety smoky) with Microcline. Side
Side
Pyrite
Pyrite. Pyrite.
 

NH12AL4: Curious crowded aggregates of Pyrite, which are actually very lustrous, highly polycrystalline octahedral crystals. On matrix, with twinned Chalcocite crystals.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 5.9 × 3.4 × 3.1 cm = 2.32” × 1.34” × 1.22”

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


minID: W2D-3EH



Chalcocite with Pyrite
 

NR11AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, shiny, on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4.1 × 2.2 × 1.3 cm = 1.61” × 0.87” × 0.51”

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


minID: RDR-DUL



Chalcocite with Pyrite. Chalcocite with Pyrite.
Chalcocite with Sb-rich Tennantite-(Fe) and Pyrite
Chalcocite with Sb-rich Tennantite-(Fe) and Pyrite. Chalcocite with Sb-rich Tennantite-(Fe) and Pyrite.
 

NE11AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, lustrous, on matrix, with tetrahedral crystals of antimony-rich Tennantite-(Fe) and coatings of botryoidal pyrite. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 6.5 × 4.4 × 2.7 cm = 2.56” × 1.73” × 1.06”

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


minID: 8L8-9GG



Chalcocite with Sb-rich Tennantite-(Fe)
 

NK12AL4: Very sharp Chalcocite crystals that form flattened twins with well defined faces and edges, with good luster, on matrix, with tetrahedral crystals of Tennantite-(Fe) rich in antimony. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 2.9 × 2 × 1 cm = 1.14” × 0.79” × 0.39”

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


minID: ARG-E0Y



Chalcocite with Sb-rich Tennantite-(Fe). Chalcocite with Sb-rich Tennantite-(Fe).
Chalcocite with Pyrite
Chalcocite with Pyrite. Chalcocite with Pyrite.
 

NV13AL4: Very sharp Chalcocite crystals that form flattened twins with well defined faces and edges, brilliant, on matrix, with very vivid metallic blue iridescent Pyrite coatings. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 2.4 × 1.5 × 0.8 cm = 0.94” × 0.59” × 0.31”

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


minID: VYJ-RN9



Chalcocite with Pyrite
 

NJ13AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, shiny, on matrix, with very vivid metallic blue iridescent Pyrite coatings. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4.9 × 3.5 × 0.7 cm = 1.93” × 1.38” × 0.28”

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


minID: D61-NA5



Chalcocite with Pyrite. Chalcocite with Pyrite.
Chalcocite
Chalcocite. Chalcocite.
 

NA14AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, brilliant, and on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 2.2 × 1.6 × 0.4 cm = 0.87” × 0.63” × 0.16”

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


minID: RGK-PKU



Chalcocite with Calcite
 

NF13AL4: Very sharp Chalcocite crystals that form flattened twins with well defined faces and edges, brilliant, on matrix, with coatings of Calcite crystals. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4.4 × 3.9 × 2.4 cm = 1.73” × 1.54” × 0.94”

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


minID: 73V-PF2



Chalcocite with Calcite. Chalcocite with Calcite.
Chalcocite with Pyrite
Chalcocite with Pyrite. Chalcocite with Pyrite.
 

NB14AL4: Very sharp Chalcocite crystals that form flattened twins with well defined faces and edges, bright, and on matrix. With Pyrite coatings. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 6.1 × 4.6 × 3.1 cm = 2.40” × 1.81” × 1.22”

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


minID: TW4-YW1



Sb-rich Tennantite-(Fe) with Pyrite
 

NA26AL4: Globular growth of antimony-richTennantite-(Fe), very lustrous, on matrix, with growths of iridescent Pyrite in dominant blue, red and brassy tones, and twinned Chalcocite crystals. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, fase 6, levels 130-135, ↓175 m., Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain (09-11/2019)

Specimen size: 3.8 × 3.2 × 1.3 cm = 1.50” × 1.26” × 0.51”


minID: 8P2-L7P



Sb-rich Tennantite-(Fe) with Pyrite. Sb-rich Tennantite-(Fe) with Pyrite.
Chalcocite
Chalcocite. Chalcocite.
 

NX16AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, shiny, on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 2.8 × 1.9 × 0.3 cm = 1.10” × 0.75” × 0.12”

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


minID: LAL-EYH



Chalcocite
 

NW16AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, shiny, on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
This specimen has been published on the Mineralogical Record´s web page, in the ‘What's New’ section, report 56, June 6, 2020 edition, page 2
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 3.1 × 2.1 × 0.7 cm = 1.22” × 0.83” × 0.28”

Main crystal size: 0.4 × 0.2 cm = 0.16” × 0.08”


minID: PE5-WTK



Chalcocite. Chalcocite.
Chalcocite
Chalcocite. Chalcocite.
 

NP26AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, shiny, on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4 × 3.5 × 2.1 cm = 1.57” × 1.38” × 0.83”

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


minID: ER7-K3T



Chalcocite with Calcite
 

ND26AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, with good luster, on a matrix covered with small white Calcite crystals. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 5.5 × 3.5 × 1.6 cm = 2.17” × 1.38” × 0.63”

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


minID: 3J3-ALD



Chalcocite with Calcite. Chalcocite with Calcite.
Chalcocite with Pyrite
Chalcocite with Pyrite. Chalcocite with Pyrite.
 

NF56AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, bright, on matrix with crystalline Pyrite inclusions. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 3.6 × 3.2 × 1.1 cm = 1.42” × 1.26” × 0.43”

Main crystal size: 0.4 × o.2 cm = 0.16” × 0.00”


minID: ANN-38Q



Chalcocite with Sb-rich Tennantite-(Fe) and Pyrite
 

NG66AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, lustrous, on matrix, with antimony-rich Tennantite-(Fe) and coatings of iridescent botryoidal Pyrite dominated by purple tones. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4.4 × 4 × 3.3 cm = 1.73” × 1.57” × 1.30”

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


minID: XFX-CPP



Chalcocite with Sb-rich Tennantite-(Fe) and Pyrite. Chalcocite with Sb-rich Tennantite-(Fe) and Pyrite.
Chalcocite on Pyrite
Chalcocite on Pyrite. Chalcocite on Pyrite.
 

NC27AL4: Very sharp Chalcocite crystals, twinned, with well defined faces and edges, flattened, shiny, and on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4.1 × 3.6 × 3.2 cm = 1.61” × 1.42” × 1.26”

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


minID: GQU-24U



Chalcocite
 

NG37AL4: Very sharp Chalcocite crystals, twinned, with well defined faces and edges, flattened, shiny, and on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4.7 × 2.7 × 2.3 cm = 1.85” × 1.06” × 0.91”

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


minID: 549-7E1



Chalcocite. Chalcocite.
Chalcocite on Pyrite
Chalcocite on Pyrite. Front
Front
Chalcocite on Pyrite. Side
Side
Chalcocite on Pyrite.
 

NA86AL4: Very sharp Chalcocite crystals, twinned, with well defined faces and edges, flattened, shiny, and on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain (2019)

Specimen size: 9.1 × 8.3 × 2.7 cm = 3.58” × 3.27” × 1.06”

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


minID: VGA-VNN





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