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Powellite
- Translations : Powellita, Powelliet, Powellit, Powellite, Повеллит, 钼钙矿, Powellita
- Etymology : Dedicated to the American geologist J.P.POWELL (1834-1902)
- Discovery: 1891 by William Harlow Melville
- Type localityPeacock Claim, sven devils dist., Adams Co., Utah, USA
Gemological data
- Chemical formula : Ca(MoO4)
- Hardness (Mohs) : 3.5 - 4
- Density : 4,26
- Refractive index : nω = 1.974 nε = 1.984
- Crystal system : Quadratic (tetragonal)
- Group : Scheelite
- Mineralogical Class : Sulfates
