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Mineralpedia Details for Metazeunerite

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Metazeunerite

Metazeunerite

Named as a mineral relating to zeunerite with lower hydration, hence the prefix meta-. Metazeunerite is an uncommon mineral that occurs in oxidized deposits of arsenic-bearing hydrothermal uranium. Many of Metazeunerite’s localities are minor, and few have good specimens, but well studied material comes from localities in Germany, England, France, the United States, Australia, and Brazil. Metazeunerite is highly radioactive. It fluoresces a pastel yellow-green under long-wave and short-wave ultraviolet light.

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

Formula
Cu(UO2)2(AsO4)2ยท8H2
Crystal System
Tetragonal 
Cleavage
Perfect, Distinct, None 
Luster
Vitreous - Pearly 
Color
green, grass green, emerald green 
Streak
greenish white 
Class
Tetragonal - Dipyramidal 
Hardness
2-2.5 
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Metazeunerite from Majuba Hill mine, Pershing Co., Nevada, United States

Metazeunerite
            from Majuba Hill mine, Pershing Co., Nevada, United States

Green, platy, square in outline crystals to 1mm.

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Metazeunerite from Florida Canyon mine, Pershing Co., Nevada, United States

Metazeunerite
            from Florida Canyon mine, Pershing Co., Nevada, United States

Thin platy green crystals to 7mm on siltsone matrix. Self-collected in 1998.

Click thumbnail images for larger view.

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