General Information:
Chemical Formula:
BaSi2O5
Composition:
(Molecular Weight = 273.50 gm)
Barium 50.21 % Ba
Silicon 20.54 % Si
Oxygen 29.25 % O
Empirical Formula:
Ba(Si2O5)
Environment:
beta-BaSi2O5 is a high temperature phase. Major component of Ba-silicate assemblages at or near fringes of large granite intrusives.
Locality:
Incline sanbornite deposit, Truball Peak, 4 miles WNW of Incline, Mariposa Co, California.
Name Origin:
Named for Frank B. Sanborn, (1862-1936), Mineralogist, California Department of Natural Resources.
Physical Properties:
Cleavage:
[???] Perfect
Color:
colorless or white.
Density:
3.74
Diaphaniety:
Transparent to Translucent
Habits:
Platy - Sheet forms (e.g. micas)., ,
Hardness:
5 - Apatite
Luster:
Vitreous (Glassy)
Streak:
white
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