berryite

Also known as IMA1965-013

Berryite is a mineral with the formula . 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.

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IMA Mineral Symbol: Bry
chemical formula: Cu₃Ag₂Pb₃Bi₇S₁₆
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 2.HB.20d
Nickel-Strunz 9th edition (updated 2009): 2.HB.20d
Commons category: Berryite
Strunz 8th edition (series ID, updated): II/D.04 – Anhang

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Berryite is a mineral with the formula . 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 G. 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.