Minerals identify

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Alforsite

Phosphate mineral,apatite group

Alforsite is a barium phosphate chloride mineral with formula: Ba5(PO4)3Cl. It was discovered in 1981, and named to honor geologist (1930–2005) of the California Geological Survey for his work in the area where it was discovered.

Alforsite is a hexagonal colorless crystal and the group apatite, primarily Fresno , Mariposa Counties. It has also been found in Baja California , Mexico.

Alforsite is a constituent of the apatite group of minerals. It crystallizes in the hexagonal crystal system with a point group of 6/m and space group P63/m. It occurs as colorless grains that are hard to distinguish from fluoroapatite , as they both display low birefringence and high relief.

Identification

Mohs scale ( mineral hardness )

5

Density ( specific gravity )

1.7
1.7

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Hexagonal