Embedded Cuprotungstite crystals Crystal Peak, Sierra Co., CA, USA – micromount as unique piece
This micromount specimen shows embedded Cuprotungstite crystals from Crystal Peak, Sierra County, California, USA. The piece displays an intense green coloration with a fine grained to slightly sparkling surface on compact matrix. The vivid color gives the specimen strong visual appeal, typical for secondary copper minerals.
The Cuprotungstite crystals are embedded and finely distributed within the matrix. Despite being enclosed, crystalline structures are visible and create an interesting, lively texture with an even distribution across the specimen.
Geology & Origin
Cuprotungstite is a rare copper tungsten oxide mineral that forms in the oxidation zone of tungsten bearing deposits. It develops as a secondary mineral through the alteration of primary tungsten minerals under oxidizing conditions.
Crystal Peak in Sierra County, California, is a well known locality for a variety of rare secondary minerals. The deposits are noted for their mineralogical diversity and the formation of vividly colored microscopic crystals.