Ski Pike Quarry cobble Hill West Paris, Maine, mind by Frank Param and Barry Heath. This is a rare specimen perhamite ..
erhamite is a phosphate mineral with the formula Ca3Al7(SiO4)3(PO4)4(OH)3ยท16.5(H2O). It occurs in rare isolated masses in amblygonite-rich pegmatite deposits throughout the world. It was discovered in platy sheed[clarification needed] form of 1mm hexagonal crystals.[5][6] It was first described in 1977 by P.J. Dunn and D.E. Appleman[7] from pegmatite collected from Bell Pit, Newry, Maine. Other specimens have been found in Kapunda, South Australia, in Silver Coin mine near Humboldt County, Nevada[2] and various locations throughout Europe.[4]
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