Compare Minerals
Put any two minerals side by side — formula, structure, hardness, density and more. Type to search each slot.
Name
—
Ca₂(Mg₂.₅₋₀.₀Fe²⁺₂.₅₋₅.₀)Si₈O₂₂(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5–6
Mohs hardness
—
3.24–3.48
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
Perfect on {110}, intersecting at 56± and 124±; parting on {100}
Cleavage
—
C2/m
Space group
—
Amphibole
Structural group
—
Fact · Approved
IMA
—
1946
Named in
—
Dark green; in thin section, yellow-green or blue-green
Typical colors
—
Ca · Mg · Fe · Si · O · H
Elements
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