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RM3198   Bournonite, galena, sphalerite and pyrite
CuPbSbS3

Excellent specimen of bournonite from this classic Kosovar mine. Several crystals of this lead and copper sulfoantimonide are disposed on a matrix formed by brilliant crystals of pyrite, sphalerite and galena. The bournonite presents visible cyclic twins, semi-matt luster, with chalcopyrite. They appear covered with calcite that is removed by chemical processes.

Size: 9.7 x 6.5 x 4.8 cm.
Main crystal: 2 x 1.9 cm.
240 €