Perhamita
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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.
Wikidata facts
- Subclass of
- phosphate mineral
- Image
- Perhamite-181540.jpg
Show 7 more facts
- IMA Mineral Symbol
- Phm
- chemical formula
- Ca₃Al₇.₇Si₃P₄O₂₃.₅(OH)₁₄.₁ · 8H₂O
- crystal system
- trigonal crystal system
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 8.DO.20
- Commons category
- Perhamite
- Nickel-Strunz 9th edition (updated 2009)
- 8.DO.20
- streak color
- white
Sources (2)
via Wikidata · CC0
Article · Español
La perhamita es un mineral de la clase de los minerales fosfatos, y dentro de esta pertenece al llamado “grupo de la perhamita”. Fue descubierta en 1977 cerca de Newry en el condado de Oxford, estado de Maine (EE. UU.), siendo nombrada así en honor de Frank Croydon Perham, geólogo estadounidense. Un sinónimo es su clave: IMA1975-019.
Abstract from DBpedia / Wikipedia · CC BY-SA