VS
Name
—
NaCr³⁺Si₂O₆
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6
Mohs hardness
—
3.51–3.6
Specific gravity
—
—
Streak
—
—
Luster
—
Good on {110}, (110) ^ (110) ~87°; parting on {001}
Cleavage
—
C2/c
Space group
—
Pyroxene
Structural group
—
Kos · Approved
IMA
—
1897
Named in
—
Emerald-green; green or yellow in thin section
Typical colors
—
Na · Cr · Si · O
Elements
—