underthescopemin:

Calcite with Pyrite

Aggregate on matrix of Calcite crystals, very rich in faces, some of them doubly terminated, with some deep hollow terminations and with very acute and extraordinarily sharp scalenohedral phantom growths coated by a layer of dark and very visible Pyrite.

Locality: Kjørholt, Brevik, Porsgrunn, Telemark  Norway 

Photos by Fabre Minerals