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Mineralpedia Details for Uchucchacuaite

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Uchucchacuaite

Uchucchacuaite

Named for the Uchuc-Chacua deposit, now the Uchucchuacua mine, in Cajatambo, Peru where Uchucchuacuaite gets its type locality and one of only two confirmed worldwide localities. It occurs in Peru “in a telescoped polymetallic hydrothermal deposit.”

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/uchucchacuaite.pdf

Formula
AgMnPb3Sb5S12 
Crystal System
Orthorhombic 
Crystal Habit
Anhedral Grains, Twinning Common 
Luster
Metallic 
Color
lead gray 
Class
Orthorhombic - Dipyramidal 
Hardness
3.5 
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Uchucchacuaite from Bear Basin #4 mine, KIng Co., Washington, United States

Uchucchacuaite
            from Bear Basin #4 mine, KIng Co., Washington, United States Micro grey crystals to less than 0.5mm on Rhodochrosite.
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Uchucchacuaite from Uchucchacua mine, Oyon prov., Lima dept., Peru

Uchucchacuaite
            from Uchucchacua mine, Oyon prov., Lima dept., Peru Steel-gray grains of Uchucchacuaite to 2mm in white Calcite matrix.
Click thumbnail images for larger view.

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