Mercedes Calcite (Chalcopyrite on Calcite) - Specimen smoky brown quartz Approximate Weight of 1 Piece:

Approximate Weight of 1 Piece: 230g

The crabs preserved within these concretions belonged to various genera and species

this kind of formation comes from shifts in groundwater chemistry moving through limestone

The specimen has a dramatic sculptural shape with glossy faces

Mercedes Calcite (Chalcopyrite on Calcite) - Specimen smoky brown quartz Approximate Weight of 1 Piece:Mined from: Daye Mine, Huangshi, Hubei Province, China Description: This one of a kind Mercedes Calcite specimen from Hubei Province, China features a broad cluster of intergrown, pale cream to nearly clear calcite crystals with thick, flattened forms and sharply angled terminations. Dark brown to black mineral bands run along the faces and edges of many crystals, creating the lined pattern associated with this material. The specimen has a solid,