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Chromio-pargasite

Type Locality
Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Shikoku Island, Japan
Mineral Data
{Na}{Ca2}{Mg4Cr3+}(Al2Si6O22)(OH)2
Strunz: 
9.DE.15
Physical Properties
Hardness: 
6.0 - 0.0
Tenacity: 
brittle