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this is a special Cassiterite
Specimen # BOL711B253
and aesthetic to be sure
metallic Pyrite (pseudomorphs after compressed rhombohedra of Siderite) which are associated with minor grey crystals of the rare sulfide
if one were to shine a very bright light
Augelite included with Jamesonite(?) Metavauxite this is a special CassiteriteThe largest crystal on this specimen is one of the biggest Augelites that I have seen from Bolivia. Its amazingly well formed, sharp, surprisingly lustrous, and DOUBLY TERMINATED! It is associated with a few smaller (but not small by any means) Augelites of similar quality. Interestingly, the crystals are included with an unknown blackish mineral (probably Jamesonite) to create an eye catching two toned effect. This piece was difficult to photograph,
