Stibarsen
American Eagle; Luona Occurrence, Elk Mountain Mining District, Gunnison County, Colorado, USA
4.7 x 3.2 x 3.2 cm. This is a rich specimen of stibarsen, with spheroidal nodules and massive seams in ore matrix. Even though the label has somehow been lost since then, we know that this is not a European specimen and so is either from Gunnison Co., Colorado or from Ophir Mine in the Comstock Lode, Nevada. However the Nevada locality has no ...
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