Chalcocite and calcite - Idaho Springs Distr. - Clear Creek Co - Colorado
(#GM22060)
Some dark grey crystals of chalcocite are stunning over the matrix that is covered by greyish crystals of calcite.
Specimen weight:75 gr.
Crystal size:mm. 8
 Overall size:50mm x 27 mm x 10 mm
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Chalcocite with Quartz - Dzhezkazgan Mining District ("Dzhezkazgan Mine"), Karaganda Region, Kazakhstan
(#BALD0638)
Exceptionally shiny and well formed crystals, that cover all the matrix. There is a carpet of little colorless and brilliant Quartz's crystals. A very fine specimen of this species from Kazakhstan.
Specimen weight:135 gr.
Crystal size:Up to 14 mm
Overall size:67mm x 42 mm x 39 mm
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Chalcocite - Bouismas Mine - Bouismas - Bou Azzer Distr. - Tazenakht - Ouarzazate Prov. - Drâa-Tafilalet Region - Morocco
(#GM18066)
Several dark grey colored crystals of chalcocite are in good evidence all around this specimen: they have metallic reflections too.
Some of them have a perfect shape ...
Specimen weight:315 gr.
Crystal size:mm. 16
Overall size:80mm x 65 mm x 55 mm
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Chalcocite - Bouismas Mine - Bouismas - Bou Azer distr. - Tazenakht - Ouarzazate prov. - Souss-Massa-Draâ Region - Morocco
(#GM15161)
A really new that I presented on my table in Munich !!
A new found of chalcocite from Bouismas, a mineral that is really rare in Morocco.
This specimen is ...
Specimen weight:20 gr.
Crystal size:mm. 20
Overall size:28mm x 21 mm x 12 mm
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Owner : GMineral (Voghera - Italy)