ATHENA MINERALOGY |
Mineral: | BANNERMANITE |
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Formula: | (Na,K)xV4+xV5+6-xO15 (0,5 < x <0,9) |
Crystal System: | Monoclinic |
IMA Number: | 1980-010 |
References: | AM 68 (1983), 634; HB3 (1997) |
Type Locality: | Izalco volcano, El Salvador |
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