VS
Name
—
(Ca,Mg,Fe)₂Si₂O₆
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5.5–6
Mohs hardness
—
3.19–3.56
Specific gravity
—
Gray-green
Streak
—
Vitreous, resinous to dull
Luster
—
Good on {110}, (110) ^ (110) ~87°; partings on {100} and {010}
Cleavage
—
C2/c
Space group
—
Pyroxene
Structural group
—
Aug · Approved
IMA
—
1685
Named in
—
Black, Brown, Green
Typical colors
—
Ca · Mg · Fe · Si · O
Elements
—