VS
Name
—
Ca₂(Mg₅.₀₋₄.₅Fe²⁺₀.₀₋₀.₅)Si₈O₂₂(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5–6
Mohs hardness
—
2.99–3.03
Specific gravity
—
white
Streak
—
Vitreous
Luster
—
Perfect on {110}, intersecting at 56 ± and 124±; partings on {010}, {100}
Cleavage
—
C2/m
Space group
—
Amphibole
Structural group
—
Tr · Approved
IMA
—
1789
Named in
—
White, Colorless, Gray, Green
Typical colors
—
Ca · Mg · Fe · Si · O · H
Elements
—