VS
Name
—
KMg₃(AlSi₃O₁₀)(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2–2.5
Mohs hardness
—
2.78–2.85
Specific gravity
—
White
Streak
—
Pearly to submetallic on cleavage
Luster
—
{001}, perfect
Cleavage
—
Cm
Space group
—
Mica, Clay
Structural group
—
Phl · Grandfathered
IMA
—
1841
Named in
—
Brown, Yellow, Red, Green
Typical colors
—
K · Mg · Al · Si · O · H
Elements
—