Pyroaurite (Type Locality) and Pyrochroite (Feinglos Coll.)

Item Description

Pearlescent, tan blades of pyroaurite are RICHLY scattered amongst black pyrochroite crystals on calcite matrix on this showy and excellent combination specimen from the world-famous Langban deposit. Pyroaurite is a rare hydrated magnesium, iron carbonate and Langban is the Type Locality. This is a very rich example of pyroaurite in combination from the Dr. Mark Feinglos Collection, a noted rarities collector.