КлассификацияCrystal systems:hexagonalSpace groups:R3mStructural group:ArsenicIMA status:Approved, Grandfathered
ПроисхождениеCountry:Germany / NorwayPublished:0Oldest age Ma:2816Paragenetic modes:Abiotic, Primary, Stage 4a: Earth's earliest continental crust, PM33 - Hydrothermal metal deposits
ПримечанияMineral name has been known since antiquity and predates any formal descriptive publication.