43974: (Meta)zeunerite - $12 Majuba Hill Mine, Antelope Mining District, Pershing County, Nevada Miniature - 3.7 x 3.2 x 3.0 cm 36 grams Strongly radioactive Specimen status: Available Send an email with specimen number to order Green, micaceous and tabular
(meta)zeunerite crystals to about 3 mm on matrix. Strongly
radioactive due to uranium content; cannot be shipped
internationally. Zeunerite, a
hydrous copper uranyl arsenate - Cu(UO2)2(AsO4)2·12H2O readily loses for
molecules of water to form metazeunerite - Cu(UO2)2(AsO4)2·8H2O. These minerals
cannot be distinguished visually (and are likely both
present in the same crystal); hence the name
'(meta)zeunerite.'
|
|||
|