DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Pucherite (dark crystals) is a bismuth-vanadate mineral that occurs as an alteration product of other bismuth minerals in the oxidised zones of some hydrothermal ore deposits or in zoned granitic pegmatite rocks. Sample from the Pucher shaft of the Wolfgang Mine, Schneeburg, Germany.
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