VS
Name
—
NaCa₂(Mg₂Fe³⁺₃)(Si₆Al₂)O₂₂O₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
6
Mohs hardness
—
3.19
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Perfect on {110}, intersecting at ~56º
Cleavage
—
C2/m
Space group
—
Amphibole
Structural group
—
Omhst · Approved
IMA
—
2011
Named in
—
Brown
Typical colors
—
Na · Ca · Mg · Fe · Si · Al · O
Elements
—