Berryite
A variety of Minerals
What is Berryite?
Berryite is a mineral with the formula Pb3(Ag,Cu)5Bi7S16. It occurs as gray to blue-gray monoclinic prisms. It is opaque and has a metallic luster. It has a Mohs hardness of 3.5 and a specific gravity of 6.7. It was first identified in 1965 using X-ray diffraction by mineralogist Leonard Gascoigne Berry (1914–1982). It is found in Park and San Juan counties in Colorado. It occurs in sulfide bearing quartz veins in Colorado and with siderite-rich cryolite in Ivigtut, Greenland.
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Quick Facts
Physical Properties
- Color
- Bluish-grey, white, grey-white.
- Hardness (Mohs)
- 3.5
- Density
- 6.83 g/cm³
Chemical Properties
- Chemical Formula
- Cu3Ag2Pb3Bi7S16 Formely considered to be Pb3(Ag,Cu)5Bi7S16.
- Elements
- Ag, Bi, Cu, Pb, S
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