VS
Name
—
CaAlMg₂(SiAl₃O₁₀)(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
3.5
Mohs hardness
—
3–3.1
Specific gravity
—
White, slightly yellow-gray
Streak
—
Vitreous, pearly, submetallic
Luster
—
{001}, perfect
Cleavage
—
C2/m
Space group
—
Mica, Clay
Structural group
—
Cln · Approved
IMA
—
1843
Named in
—
Colorless, yellow, orange, red-brown, brown, green
Typical colors
—
Ca · Al · Mg · Si · O · H
Elements
—