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Mineralpedia Details for Arsentsumebite

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Arsentsumebite

Arsentsumebite

Named as the arsenate analogue of tsumebite. Arsentsumebite is a rare mineral that can be found in Namibia, Germany, the Czech Republic, the United States, and Australia, and a few others. It occurs in oxidized hydrothermal polymetallic deposits in association with malachite, cerussite, smithsonite, mimetite, bayldonite, conichalcite, duftite, quartz, and iron oxides.

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

Formula
Pb2Cu(AsO4)(SO4)(OH) 
Crystal System
Monoclinic 
Cleavage
None, None, None 
Luster
Adamantine - Metallic 
Color
yellow green, emerald green 
Streak
light green 
Class
Monoclinic - Prismatic 
Hardness
4-5 
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Arsentsumebite from Tsumeb mine, Tsumeb, Namibia

Arsentsumebite
            from Tsumeb mine, Tsumeb, Namibia

Lime green micro crystal aggregates to 1mm with dark blue, lustrous Azurite.

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