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Ilvaite, Quartz


Ilvaite : CaFe2+2Fe3+[O|OH|Si2O7], Quartz : SiO2

Brilliant ilvaite crystals up to 13 mm on dipyramidal quartz crystals up to 10 mm. No damage. Overall size of mineral specimen: 32x28x15 mm. Size of individual crystals: 4-13 mm.

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