Name: Digenite Calcite.
Location: Leonard mine Butte Montana USA.
Size: 210 x 150 x 90 mm.
Weight: 1877 gm.
Grouping: Sulphide Carbonate.
Comment: I have had this specimen for a long time it come from a well known mine in the US. It is not the prettiest specimen but its historical value cannot be underestimated. The scalenohedral calcite crystals are well formed but in need of a good clean. I like to leave my minerals natural that is, how they look when they come out of the ground.