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ATHENA

MINERALOGY

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Mineral:GLAUCOPHANE
Formula:[]Na2(Mg3Al2)Si8O22(OH)2
Crystal System:Monoclinic
Strunz Nr:8/F.08-10
Group:Amphibole group group IV: sodic group
References:EJM 4 (1992), 171; HB2/1 (1995)
Type Locality:Syra Island, Cyclades Islands, Greece
Comments:[] = vacancy

Glaucophane, 6x8cm
Sonoma Co., California, USA
Amphibole bought from Ward's, 1980
Photo and Coll. P. Perroud
See also: athena.unige.ch -> mineral pictures

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