Magnetite : Fe2+Fe3+2O4
Mindat locality:
Photo added to mindat.org
“Small octahedral magnetite crystals in chloritic schist - Specimen size around 8x6 cm - s.c. Oct. 1981 - Overall size around 10x5 cm - Crystals size around 1,5 mm”
Marco Barsanti - 30th November 2000
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