Vivianite, Pyrite
Morococala Mine, Santa Fé mining district, Pantaleón Dalence Province, Oruro, Bolivia
Group of crystals of Vivianite, some of them doubly terminated, with parallel growths, excellent luster and color, and on a matrix coated by small octahedral crystals of Pyrite with slightly curved edges so, after a verbal communication of Alfredo Petrov, the locality is confirmed, uncertain on the original documentation.
Morococala Mine, ...
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