Zoned fluorite octahedrons from la Barre, Puy-de-Dôme, France.
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Zoned fluorite octahedrons from la Barre, Puy-de-Dôme, France.

by Sophie Graul, Tallinn University of Technology, Tallinn, Estonia and France

Zoned fluorite octahedrons in chalcedony matric from la Barre, Puy-de-Dôme, France.