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Chalcocite pseudo after Covellite - Classic USA
Chalcocite pseudo after Covellite - Classic USA Chalcocite pseudo after Covellite - Classic USA
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Chalcocite pseudo after Covellite - Classic USA

Leonard Mine, Butte, Silver Bow County, Montana, United States
minID: EHU-1WF
34mm x 33mm x 22mm
$2400
Fantastic form and a killer pseudomorph. This vintage Butte specimen shows perfectly the form of the original Covellite crystals which are almost fully replaced by Chalcocite. It looks like a tiny bit of Covellite may remain on the backside, but if so it is minor. This is an early specimen with excellent provenance, a tattered Roy Hopping (NYC Mineral dealer vintage 1898) label is included. This was also in the collection of Louis Zara (famed NYC collector, author and publisher of the Mineral Digest. His label is also included. The specimen is in exceptional condition, fully undamaged and attractive from almost any angle. Well-crystallized Covellite is remarkably rare worldwide with only two significant localities, both long closed. It is even less common to see a well-defined pseudomorph with sharp crystals like this.
Data last checked on 15th Oct 2021 - specimen may no longer be available

Ref: 13.1-375
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See Also

Chalcocite
Leonard Mine, Butte, Montana, USA
$2250
20mm x 10mm x 10mm
Covellite
Summitville District, Rio Grande Co., Colorado, USA
$2400
60mm x 50mm x 40mm
Chalcocite
Flambeau Mine, Ladysmith, Rusk Co., Wisconsin, USA
$2250
50mm x 30mm x 0mm
Chalcocite
Chimney Rock Quarry, Bridgewater, near Bound Brook, New Jersey, USA
$2500
120mm x 60mm x 40mm
Chalcocite (twinned) on Calcite
Levant Mine, Trewellard, St Just District, Cornwall, England, UK
$2150
70mm x 60mm x 30mm
Chalcocite
Flambeau Mine, Ladysmith, Rusk County, Wisconsin, United States
$1600
75mm x 45mm x 43mm
Chalcopyrite coated Chalcocite with Djurleite
Tonglushan Mine, Daye Co., Huangshi, Hubei, China
$2000
80mm x 60mm x 30mm
Chalcocite
Bristol Copper Mine, Bristol, Hartford Co., Connecticut, USA
$2800
110mm x 70mm x 60mm
Chalcocite
Bristol Copper Mine, Hartford County, Connecticut, USA
$3000
20mm x 10mm x 10mm
Chalcocite
M'Passa Mines, Mindouli District, Pool Department  Republic of the Congo
$2222 *
66mm x 50mm x 12mm
Covellite with Pyrite and Quartz
Leonard Mine, Butte, Silver Bow County, Montana, United States
$850
48mm x 43mm x 30mm
Chalcocite (rare for locality!)
Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
$1800
60mm x 50mm x 40mm
Covellite with Pyrite
Calabona mine, Alghero, Sassari Province, Sardinia, Italy
$3000
50mm x 50mm x 20mm
Covellite with Pyrite
Leonard Mine, Butte, Silver Bow County, Montana, United States
$750
54mm x 43mm x 32mm
Chalcocite
M'Passa Mines, Mindouli District, Pool Department  Republic of the Congo
$1638 *
55mm x 52mm x 31mm
* price is an approximate conversion and may not be accurate.

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