Brassite (rare arsenate - Type Locality) Vajdak Coll.

Item Description

Brassite is a very rare hydrated Mg-arsenate and ancient Jachymov is the Type Locality. This is a very rich specimen of white brassite crystals covering both sides of the matrix containing much rosslerite, another rare hydrated arsenate, of clear colorless crystals. A very fine, rich and rare example of the combination species from the Josef Vajdak Collection, a noted Czech specialist.