Volborthite : Cu3(V2O7)(OH)2·2H2O
70mm x 40mm x 40mm
Mineral(s)
Photo added to mindat.org
“Rosettes of Volborthite crystals to 1 cm from Milpillas mine, Sonora, Mexico. Specimen and photo obtained from Dan Weinrich.”
Knut Eldjarn - 10th May 2019
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