VS
Name
—
KLiMn³⁺₂Si₄O₁₀O₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
3.264
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
{001}, perfect; {010} and {100}, poor
Cleavage
—
C2/m
Space group
—
Mica
Structural group
—
Nrr · Approved
IMA
—
1989
Named in
—
Black to brown-black; in transmitted light, bright yellow, lime-green or olive-green, honey-brown
Typical colors
—
K · Li · Mn · Si · O
Elements
—