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Sugilite

Type Locality
Iwagi Island, Inland Sea (Setonaikai), Ehime Prefecture, Japan
Mineral Data
K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
Strunz: 
9.CM.05
Physical Properties
Crystal System: 
Hexagonal
Hardness: 
6.0 - 6.5