General Information:
Chemical Formula:
3SiO2·(H2O)
Composition:
(Molecular Weight = 198.27 gm)
Silicon 42.50 % Si
Hydrogen 1.02 % H
Oxygen 56.49 % O
Empirical Formula:
3(SiO2)·(H2O)
Environment:
Leached magadiite.
IMA Status:
Approved IMA 1972
Locality:
Trinity County magadiite locality, 6 miles east of Trinity Center Trinity Co., California.
Name Origin:
Named for its composition, a silica hydrate.
Physical Properties:
Color:
white.
Density:
2.141
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
Hardness:
1 - Talc
Streak:
white
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