VS
Name
—
Mg₅(SiO₄)₂F₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6–6.5
Mohs hardness
—
3.16–3.26
Specific gravity
—
—
Streak
—
Vitreous to resinous
Luster
—
{100} indistinct; parting on {001}
Cleavage
—
P2_1/b
Space group
—
Humite
Structural group
—
Chn · Grandfathered
IMA
—
1817
Named in
—
Light yellow, yellow, brown, red; in thin section, pale yellow or brown to colorless
Typical colors
—
Mg · Si · O · F
Elements
—