Claraite Locality: Weißer Schrofen, Ringenwechsel District, Schwaz, Brixlegg - Schwaz area, Inn valley, North Tyrol, Tyrol, Austria Field of view 4 mm. Specimen and photo Leon Hupperichs. — Photo: Leon Hupperichs · CC BY-SA 3.0
Claraite
Claraite is an IMA-recognized mineral species in the arsenate class, with the chemical formula (Cu,Zn)₁₅(CO₃)₄(AsO₄)₂(SO₄)(OH)₁₄·7H₂O.
It crystallizes in the hexagonal crystal system (space group P-1).
Key properties: Mohs hardness 2; specific gravity 3.35; Vitreous luster; optically uniaxial.
IMA symbol Clar, IMA status: approved, named in 1981.
Found as a rare secondary mineral in oxidized Cu–Zn deposits.
It is found associated with Malachite, azurite, olivenite, barite, fluorite, quartz (Clara mine, Germany); malachite, devilline, gypsum (Rudabánya, Hungary).
The name refers to the Clara mine, Germany, where the first specimens were collected.