Mineral specimens search results


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EXL92AQ1: Chalcocite
Druse of very sharp and aerial Chalcocite crystals with a hexagonal habit, very lustrous, and in matrix. A high-quality classic from the Moutet (Marseille) collection.
Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom
Specimen size: 5.3 × 4.6 × 4.3 cm = 2.09” × 1.81” × 1.69”
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EFA16AN4: Chalcocite
New discovery: very aerial floater group of Chalcocite crystals between platy and tabular, very sharp, with a pseudo-hexagonal outline and great luster. The specimen, of high quality for the species, comes from new workings in the M'Passa area where a group of small mines used to yield, in their glorious past, specimens with big sharp crystals. With the closure of the workings in the 1980s, that glory was lost, although fortunately it has now returned with specimens as magnificent as those and, moreover, with a great variety of crystallographic habits.
M'Passa Mines, Mindouli District, Pool Department  Republic of the Congo (2021)
Specimen size: 5.2 × 4.3 × 3.5 cm = 2.05” × 1.69” × 1.38”
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EGR46AN4: Chalcocite
New discovery: very aerial floater group of very sharp platy crystals of Chalcocite, with a pseudo-hexagonal outline, lustrous, with parallel and polycrystalline growths. The specimen, of high quality for the species, comes from new workings in the M'Passa area where a group of small mines used to yield, in their glorious past, specimens with big sharp crystals. With the cessation of exploitation in the 1980s, that glory was lost, but fortunately it has now returned with specimens as magnificent as those and, moreover, with a great variety of crystallographic habits.
M'Passa Mines, Mindouli District, Pool Department  Republic of the Congo (2021)
Specimen size: 5.5 × 5.2 × 3.1 cm = 2.17” × 2.05” × 1.22”
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TC17AH5: Chalcocite
Group of very sharp Chalcocite crystals that are twinned, partially doubly terminated and very bright. The sample is from an exceptional find from which only very few were saved.
We’ll send the sample in its original Perkin’s box from the R.J. Noble collection, also containing the collection label.
Telfer Mine, Telfer, Paterson Province, Pilbara Region, Western Australia  Australia
Specimen size: 2.6 × 1.5 × 1.1 cm = 1.02” × 0.59” × 0.43”

Main crystal size: 2 × 0.9 cm = 0.79” × 0.35”
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ERB96AN4: Chalcocite
New discovery: very aerial group of Chalcocite crystals, huge for the species, between platy and tabular, very sharp, with a pseudo-hexagonal outline and great luster. This specimen, of high quality for the species, comes from new workings in the M'Passa area where a group of small mines used to produce, in their glorious past, specimens with large sharp crystals. With the closure of the workings in the 1980s, that glory was lost, although fortunately it has now returned with specimens as magnificent as those and, moreover, with a great variety of crystallographic habits.
This specimen has been published on the Mineralogical Record´s web page, in the 'What's New' section, report 61, August 30, 2021 edition, page 10
M'Passa Mines, Mindouli District, Pool Department  Republic of the Congo (2021)
Specimen size: 6.6 × 5 × 1.2 cm = 2.60” × 1.97” × 0.47”
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HM90TX: Chalcocite
Group on matrix of lamellar and very sharp crystals of Chalcocite, with well defined and lustrous faces and edges. This specimen, from a classic locality, is very old, as the label that accompanies it attests.
Saint Just District, Cornwall  England / United Kingdom
Specimen size: 4.5 × 3.7 × 3.4 cm = 1.77” × 1.46” × 1.34”

Main crystal size: 0.7 × 0.2 cm = 0.28” × 0.08”
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AM96S9: Chalcocite
Good sample, very representative of the material from the Flambeau Mine, a classic for the species. The crystals, on matrix, are sharp and have very well defined faces and edges, showing the metallic bluing characteristic of the samples from this mine.
Flambeau Mine, 1000 level, Ladysmith, Rusk County, Wisconsin  USA (1994)
Specimen size: 6.3 × 5.4 × 3.8 cm = 2.48” × 2.13” × 1.50”
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M47PD2: Chalcocite
These old timers have that special touch. While it may not be as attractive as some other specimens the difficulty in getting material from this mine and the patina that time has given the crystals make it a nice classic.
Geevor Mine, Pendeen, Saint Just District, Cornwall  England / United Kingdom
Specimen size: 2.2 × 2.2 × 0.7 cm = 0.87” × 0.87” × 0.28”
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RF62I8: Chalcocite
An especially interesting miniature. The sharp crystals, with very well-defined faces and edges, form a very aerial parallel growth.
Kamoto Principal Mine (Kamoto Mine), Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba)  Democratic Republic of the Congo (Zaire)
Specimen size: 1.6 × 0.9 × 1 cm = 0.63” × 0.35” × 0.39”
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RE62I8: Chalcocite
An especially interesting miniature. The sharp crystals, with very well-defined faces and edges, form a very aerial parallel growth.
Kamoto Principal Mine (Kamoto Mine), Kamoto, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba)  Democratic Republic of the Congo (Zaire)
Specimen size: 1.3 × 1 × 0.7 cm = 0.51” × 0.39” × 0.28”
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SM80RE: Chalcocite
Floater group of very sharp and well defined prismatic crystals. An old English classic.
Saint Just District, Cornwall  England / United Kingdom
Specimen size: 2.5 × 1.1 × 0.7 cm cm = 0.98” × 0.43” × 0.28”
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TB36F2: Chalcocite
The crystals are quite well-developed for this mineral species and they form a very aerial group, which has not been altered or coated in this fine sample.
Shaft 65, Dzhezkazgan  Kazakhstan
Specimen size: 4 × 2.8 × 2 cm = 1.57” × 1.10” × 0.79”
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TM36Z2: Chalcocite and Djurleite with Chalcopyrite
A novelty at Tucson 2014. Aggregate of extraordinarily elongated Chalcocite crystals completely coated by iridescent Chalcopyrite, with dominant blue shades. By recent reports, it seems that in some cases the Chalcocite crystals are partially replaced by Djurleite.
Tongshankou Mine, Edong, Daye, Huangshi Prefecture, Hubei Province  China (2013)
Specimen size: 5.3 × 0.6 × 0.5 cm = 2.09” × 0.24” × 0.20”
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TJ66Z2: Chalcocite and Djurleite with Chalcopyrite
A novelty at Tucson 2014. Aggregate of extraordinarily elongated Chalcocite crystals completely coated by iridescent Chalcopyrite, with dominant blue, violet and golden shades. By recent reports, it seems that in some cases the Chalcocite crystals are partially replaced by Djurleite.
The specimen has been reviewed and published in the magazine ‘Lapis’ on page 31, volume 39, number 5, May 2014
Tongshankou Mine, Edong, Daye, Huangshi Prefecture, Hubei Province  China (2013)
Specimen size: 5.8 × 0.5 × 0.3 cm = 2.28” × 0.20” × 0.12”
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TZ66Z2: Chalcocite and Djurleite with Chalcopyrite
A novelty at Tucson 2014. Aggregate of extraordinarily elongated Chalcocite crystals and coralloid growths completely coated by iridescent Chalcopyrite, with dominant blue and violet shades. By recent reports, it seems that in some cases the Chalcocite crystals are partially replaced by Djurleite.
This specimen was published on the Mineralogical Record´s web page, in the ‘What’s New in the Mineral World?’ section, report #37, April 14, 2014 edition, and in the book 'China II', by Berthold Ottens, on page 128
Tongshankou Mine, Edong, Daye, Huangshi Prefecture, Hubei Province  China (2013)
Specimen size: 4.3 × 1.9 × 1.4 cm = 1.69” × 0.75” × 0.55”
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TB96Z2: Chalcocite and Djurleite with Chalcopyrite
A novelty at Tucson 2014. Aggregate of extraordinarily elongated Chalcocite crystals completely coated by iridescent Chalcopyrite, with dominant violet and golden yellow shades. By recent reports, it seems that in some cases the Chalcocite crystals are partially replaced by Djurleite.
Tongshankou Mine, Edong, Daye, Huangshi Prefecture, Hubei Province  China (2013)
Specimen size: 4.5 × 3.6 × 2.8 cm = 1.77” × 1.42” × 1.10”

Main crystal size: 4.2 × 0.4 cm = 1.65” × 0.16”
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TX66Z2: Chalcocite and Djurleite with Chalcopyrite
A novelty at Tucson 2014. Aggregate of extraordinarily elongated Chalcocite crystals completely coated by iridescent Chalcopyrite, with dominant green and violet shades. By recent reports, it seems that in some cases the Chalcocite crystals are partially replaced by Djurleite.
Tongshankou Mine, Edong, Daye, Huangshi Prefecture, Hubei Province  China (2013)
Specimen size: 7.2 × 0.5 × 0.5 cm = 2.83” × 0.20” × 0.20”
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TX96Z2: Chalcocite and Djurleite with Chalcopyrite
A novelty at Tucson 2014. Aggregate of elongated Chalcocite crystals with very well defined faces and edges finished with an arborescent growth and completely coated by iridescent Chalcopyrite, with dominant blue shades. By recent reports, it seems that in some cases the Chalcocite crystals are partially replaced by Djurleite.
Tongshankou Mine, Edong, Daye, Huangshi Prefecture, Hubei Province  China (2013)
Specimen size: 4.9 × 1.5 × 2.1 cm = 1.93” × 0.59” × 0.83”

Main crystal size: 3 × 1.7 cm = 1.18” × 0.67”
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TY38Z2: Chalcocite and Djurleite with Chalcopyrite
A novelty at Tucson 2014. Aggregate of extraordinarily elongated Chalcocite crystals and arborescent growths completely coated by iridescent Chalcopyrite, with dominant blue shades. By recent reports, it seems that in some cases the Chalcocite crystals are partially replaced by Djurleite.
Tongshankou Mine, Edong, Daye, Huangshi Prefecture, Hubei Province  China (2013)
Specimen size: 5.5 × 4.7 × 3.8 cm = 2.17” × 1.85” × 1.50”
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TD16AD0: Chalcocite coating Pyrite
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”
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TC46AH2: Chalcocite coating Pyrite
A complex Pyrite crystal, very rich in faces, with the predominant forms of the octahedron and the pyritohedron, that is black due to a uniform Chalcocite coating, very bright and on matrix. The Chalcocite has been analyzed and we’ll send a copy of the analysis to the buyer.
Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2013)
Specimen size: 6.4 × 5.2 × 4.6 cm = 2.52” × 2.05” × 1.81”
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TB46AD0: Chalcocite coating Pyrite
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”
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TMA13AN8: Chalcocite on Pyrite
Floater Pyrite crystal, with dominant pyritohedron faces beveled by those of the octahedron, black in color due to a uniform coating of Chalcocite, not a pseudomorph, a case similar to the Chalcocite specimens from the Milpillas mine. We will ship the specimen in its original Perky box from the Robert J. (Bob) Noble collection, which also contains the label.
Chino Mine, Santa Rita, Santa Rita District, Grant County, New Mexico  USA
Specimen size: 2.7 × 2.4 × 2.4 cm = 1.06” × 0.94” × 0.94”
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TN26AL4: Chalcocite on Pyrite
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”
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TC2150NKA: Chalcocite on Pyrite
Very sharp Chalcocite crystals that form hexagonal cyclic twins with very well defined faces and edges, flattened, lustrous, and on matrix. These specimens were 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: 5.3 × 2.1 × 2.2 cm = 2.09” × 0.83” × 0.87”

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