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Alforsite



Alforsite is a mineral, Ba5Cl(PO4)3, composed of barium, phosphorus, chlorine, and oxygen. It was discovered in 1981, and named to honor geologist John T. Alfors (1930-2005) of the California Geological Survey (formerly California Division of Mines and Geology) for his work in the area where it was discovered.

Additional recommended knowledge

Alforsite is a hexagonal colorless crystal in the chemical class phosphates and the group apatite. It is found in certain parts of central California, primarily Fresno, Mariposa, and Tulare Counties. It has also been found in Baja California, Mexico.

Properties

Crystallographic system Hexagonal
Colors Colorless
Luster Vitreous
Hardness 5
Specific gravity 4.73
Refractive index 1.70
Cleavage

See also

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Alforsite". A list of authors is available in Wikipedia.
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