ATHENA MINERALOGY |
Mineral: | IANGREYITE |
---|---|
Formula: | Ca2Al7(PO4)2(PO3OH)2(OH,F)15.8H2O |
Crystal System: | Rhombohedral (Trigonal) |
Group: | Related to Alunite-Jarosite group. Perhamite structure. |
IMA Number: | 2009-087 |
References: | MM 75/2 (2011), 327; AM 98 (2013), 280 |
Type Locality: | Silver Coin mine, Nevada, USA. Krásno ore district, Horní Slavkov, Czech Republic |
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