Monument No. 1 Mine, Monument No. 1 channel, Mystery Valley, Mineral Mining District, Navajo County, Arizona
Miniature - 5.4 x 3.7 x 2.6 cm
64 grams
Specimen status: Reserved
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Crusty to microcrystalline, yellow
green tangeite/volborthite with an unidentified, crusty
blue mineral, on matrix. Tangeite, a copper vanadate with
calcium - CaCu(VO4 )(OH) and
volborthite, a copper vanadate without calcium - Cu3(V2O7)(OH)2ยท2H2O
cannot be distinguished visually and may even be
intergrown on this representative sample. Needs
magnification - hand lens, microscope or camera lens - for
best viewing.
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