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ATHENA

MINERALOGY

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Mineral:ANDESINE (a variety of albite)
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Crystal System:Anorthic (Triclinic)
Strunz Nr:8/J.07-40
Group:Feldspar group
References:ZK 178 (1987), 207; HB2/1 (1995)
Type Locality:Marmato, Cauca, Andes Mts, Colombia
Comments:A plagioclase feldspar; An30Ab70 to An50Ab50

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