43904: (Meta)Zeunerite - $10
Majuba Hill Mine,
Antelope Mining District, Pershing County, Nevada
Miniature - 5.2 x 3.3 x 3.0 cm
63 grams
Weakly radioactive
Specimen status: Reserved
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Opaque, micaceous (meta)zeunerite
crystals to about 4 mm moderately abundant on matrix.
Zeunerite - Cu(UO2)2(AsO4)2·12H2O
readily loses four molecules of water to the atmosphere to
form zeunerite - Cu(UO2)2(AsO4)2·8H2O.
These copper uranyl arsenate hydrates cannot be
distinguished visually, so in the absence of chemical
analysis we cannot know if this is zeunerite or
metazeunerite. Platy chalcophyllite and massive
chrysocolla may be present as unverified blue green,
massive to crystalline minerals.
Weakly radioactive due to its uranium content.
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