VS
Name
—
Ca₂Mn²⁺Mn³⁺₂(Si₂O₇)(SiO₄)(OH)₂·H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6
Mohs hardness
—
3.4
Specific gravity
—
Pale orange
Streak
—
Vitreous
Luster
—
One set observed in thin section
Cleavage
—
A2/m
Space group
—
Pumpellyite
Structural group
—
Okh · Approved
IMA
—
1985
Named in
—
Deep orange
Typical colors
—
Ca · Mn · Si · O · H
Elements
—