VS
Name
—
Mn₂Mn₂MnCa(Si₃O₉)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Triclinic
Crystal system
—
—
Mohs hardness
—
3.56
Specific gravity
—
Brown
Streak
—
Vitreous
Luster
—
Perfect on {001}
Cleavage
—
P-1
Space group
—
Wollastonite
Structural group
—
Mdg · Approved
IMA
—
2014
Named in
—
Dark brown
Typical colors
—
Mn · Ca · Si · O
Elements
—