Formula: CaMn4Si5O14(OH)2.H2O
Origin of name: after locality Santa Clara County, California, USA
Crystal system: triclinic
Crystal class: -1
Twinning: common on {100}
Unit cell: a = 15.63 Å, b = 7.60 Å, c = 12.00 Å, a = 109.7°, b = 88.6°, g = 100.0°
Colour: pale pink to reddish orange
Diaphaneity:
Luster: vitreous
Habit: crystals fibrous, thin prismatic to tabular, in radiating lamellar aggregates
Hardness: 6.5
Specific gravity: 3.31
Cleavage: 2; {100} and {010} good
Tenacity:
Streak: pale pink
Synonyms/varieties:
Comments:
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