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ATHENA

MINERALOGY

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Mineral:IANGREYITE
Formula:Ca2Al7(PO4)2(PO3OH)2(OH,F)15 · 8H2O
Crystal System:Rhomboedral (Trigonal)
Group:Alunite-Jarosite group Perhamite structure.
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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