Polished Smithsonite Aragonite Crystal Points

Smithsonite is a variably coloured trigonal mineral which only rarely is found in well-formed crystals. The typical habit is as earthy botryoidal masses. Smithsonite occurs as a secondary mineral in the weathering or oxidation zone of zinc-bearing ore deposits. It sometimes occurs as replacement bodies in carbonate rocks and as such may constitute zinc ore.
 
Locality = Congo
Grade = Very Good Grade 
Size = 110 - 118 mm