Chalcocite forming both a tapering prismatic crystal with a pseudohexagonal crystal at its base, with tufts of malachite on a vugh lining of crystalline prehnite. Ex Margaret Brown. Width of view 11.5mm. Stack of 70...
Pseudohexagonal crystals. Width of view 11.5mm. Stack of 60 images. Click on the image below for a higher resolution version.
Mined in 1820. Ex Captain Sara Collection. Ex Albert Chapman. Ex Brian Shelton. Measures 35x23x16mm. Click on the image below for a higher resolution version.
Acquired by Joan Lamond in 1996. Ex Museum Victoria.
Sharp platy crystals. Width 7mm, stack of 60 images. Ex Jo Price Collection.
8159 M1090 Chalcocite, Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England
ex Bernie and Margaret Day Collection
7189 Chalcosite, Calcite, Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England
ex Joan Lamond Collection, ex Museum Victoria. Simply labelled as Cornwall, England, probably Geevor/Levant, Ian Acworth, Steve Rust, David Ifold pers com.
Specimen measures 28x23x16mm.
Collected in 1820 and acquired from the Captain Sara Collection by Brian Shelton , a beautiful well-formed thumbnail with classic silvery black chalcosite crystals on a quartz matrix.
Bornite pseudomorph after chalcocite, Belmont Mine, Butte, Butte District (Summit Valley District), Silver Bow Co., Montana, USA. Labelled as A Vein, 3000 Level. Ex Hatfield Goudey. Ex John Lewis Collection.