General Information:
Chemical Formula:CaMn++4Si5O14(OH)2·(H2O)
Composition:(Molecular Weight = 676.28 gm)Calcium 5.93 %
CaManganese 32.49 %
MnSilicon 20.76 %
SiHydrogen 0.60 %
H Oxygen 40.22 %
O Empirical Formula: CaMn2+4Si5O14(OH)2·(H2O)
Locality:Pennsylvania mine, SW side of San Antonio Valley, 4 miles ENE of Mount Hamilton, Santa Clara Co., California.
Name Origin:Named after it's locality.
Physical Properties: Cleavage:[100] Good, [010] Good
Color:light pink or reddish orange.
Density:3.31
Diaphaniety:Transparent to Translucent
Hardness:6.5 - Pyrite
Luster:Vitreous (Glassy)
Streak:light pink
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