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Glaucophane

Type Locality
Syros Island (Syra), Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon), Kykládes Prefecture, Aegean Islands Department (Aiyaíon), Greece
Mineral Data
◻[Na2][Mg3Al2]Si8O22(OH)2
Strunz: 
9.DE.25
Physical Properties
Hardness: 
5.0 - 6.0
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