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Encyclopedia > 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 of the California Division of Mines and Geology for his work in the area where it was discovered.


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

External links

  • Webmineral (http://webmineral.com/data/Alforsite.shtml)
  • Mindat (http://www.mindat.org/min-112.html)
  • Euromin (http://euromin.w3sites.net/mineraux/ALFORSITE.html)



  Results from FactBites:
 
Alforsite - Wikipedia, the free encyclopedia (128 words)
Alforsite is a mineral, Ba Cl(PO, composed of barium, phosphorus, chlorine, and oxygen.
It was discovered in 1981, and named to honor geologist John T. Alfors of the California Division of Mines and Geology for his work in the area where it was discovered.
Alforsite is a hexagonal colorless crystal in the chemical class phosphates and the group apatite.
barium_labdoc.htm (2283 words)
In order to dissolve alforsite, a minimum amount of nitric acid must be added with stirring, followed by distilled water.
Volumetric analysis with silver nitrate and indicators such as phenosafrinin and dichlorofluoroscein were attempted without success due to the pH requirements in dissolving alforsite and the small chloride concentrations.
All work should be performed in a hood using gloves and a lab coat/apron to prevent inhalation, spills onto clothing, etc. As always, safety glasses or goggles must be worn.
  More results at FactBites »


 
 

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