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Osumilite - Funtanafigu Quarry, Marrubiu, Mt. Arci, Oristano Province, Sardinia, Italy (#:MINS8711)

Cluster of shiny blacks tabular Osumilite crystals up to 2.5 mm richly set on contrasting matrix.

Formula :
(K,Na)(Fe2+,Mg)2(Al,Fe3+)3[Si12O30]

System: hexagonal Hardness:6-7 Rarity:not common
Strunz id:VIII/E.22-90 - SILICATES
Name origin: Named in 1953 by Akiho Miyashiro for the Osumi Peninsula, Japan, on which the type locality is found.-

Specimen weight:0 gr.
Crystal size:Up to 2.5 mm
Overall size: 78mm x 55 mm x 34 mm

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Osumilite - Funtanafigu Quarry,  Marrubiu,  Mt. Arci,  Oristano Province,  Sardinia,  Italy

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