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Shigaite and Rhodochrosite - N'Chwaning I mine, South Africa (#:MINS8013)

Shigaite is a very rare aluminum manganese sulfate. This specimen features gemmy, 4 mm, tabular, hexagonal, dark cherry-red shigaite crystal with clusters of very sparkly, transparent, rose-red rhodochrosite crystals in association.

Formula :
Mn72+Al4[(OH)22/(SO4)2] * 8 H2O
System: trigonal Hardness:2 Rarity:very rare
Strunz id:VI/D.4-40 - SULFATES, CHROMATES, MOLYBDATES and TUNGSTATES
Name origin: Named after its discovery locality (Ioi mine, Ritto City, Shiga Prefecture, Kinki Region, Honshu Island, Japan)

Specimen weight:326 gr.
Crystal size:Up to 4 mm wide
Overall size: 105mm x 60 mm x 60 mm

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Shigaite and Rhodochrosite - N'Chwaning I mine, South Africa

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