VS
Name
—
Ca₅(SiO₄)₂F₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5–6
Mohs hardness
—
2.866
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
Distinct on (001), particularly for OH: F ≈ 1
Cleavage
—
P2_1/a
Space group
—
Humite
Structural group
—
Kty · Approved
IMA
—
2008
Named in
—
Light-pink, colorless in thin-section
Typical colors
—
Ca · Si · O · F
Elements
—