Category Phyllosilicate Strunz classification 9.EF.10 Space group Pmcn | Formula
(repeating unit) Ba(Si2O5) Crystal system Orthorhombic | |
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Crystal class Dipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m) | ||
Sanbornite is a rare barium phyllosilicate mineral with formula BaSi2O5. Sanbornite is a colorless to white to pale green, platey orthorhombic mineral with Mohs hardness of 5 and a specific gravity of 3.74.
It was first described from Incline, Mariposa County, California in 1932 and named for mineralogist Frank B. Sanborn (1862–1936).
References
Sanbornite Wikipedia(Text) CC BY-SA