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Mineralati

Minerals

Perhamite

perhamite

Ca3Al7.7Si3P4O23.5(OH)14.1 · 8H2O

Perhamite - RARE15-099 - Ski Pike quarry - Maine Mineral Specimen

Perhamite - RARE15-099 - Ski Pike quarry - Maine Mineral Specimen — via www.irocks.com · Source

Overview

Perhamite is a phosphate mineral with the formula Ca3Al7(SiO4)3(PO4)4(OH)3·16.5(H2O). It occurs in rare isolated masses in amblygonite-rich pegmatite deposits throughout the world. It was discovered in platy sheed form of 1mm hexagonal crystals. It was first described in 1977 by P.J. Dunn and D.E. Appleman 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 and various locations throughout Europe.

Scientific references

  1. Perhamite — Wikidata. https://www.wikidata.org/wiki/Q948632 Link
  2. Perhamite — Wikipedia. https://en.wikipedia.org/wiki/Perhamite Link