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Franciscanite


Franciscanite : Mn3+6V5+0.5[(O,OH)3|SiO4]

Photo Copyright © Knut Eldjarn  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Pennsylvania mine, San Antonio Valley, Santa Clara Co., California, USA
Brownish red massive Franciscanite with black grains of Braunite from the type locality, the Pennsylvania mine, Santa Clara co., California, USA. Field of view: 3 cm. Specimen and photo: Knut Eldjarn.

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