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Magnetite


Magnetite : Fe2+Fe3+2O4

Lustrous black metallic octahedral magnetite crystal with dodecahedral edge modifications. Well crystallized, though with minor natural imperfections. From the D. Olsen collection (1975). Ex. A. Stevenson collection #474. Overall size of mineral specimen: 15x13x13 mm. Size of individual crystals: 15 mm.

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