VS
Name
—
Ca₂Mn²⁺₇Si₁₀O₂₈(OH)₂·5H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Triclinic
Crystal system
—
5.5–6
Mohs hardness
—
3.03–3.04
Specific gravity
—
White
Streak
—
Vitreous to silky
Luster
—
Perfect on {010}, good on {100}
Cleavage
—
P1
Space group
—
—
Structural group
—
Ins · Grandfathered
IMA
—
1887
Named in
—
Rose-red, pink, orange-pink, orange-red-brown, deep wine-red; changes to ginger-brown on exposure
Typical colors
—
Ca · Mn · Si · O · H
Elements
—