VS
Name
—
NaCa₂Si₄O₁₀F
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Triclinic
Crystal system
—
5.5
Mohs hardness
—
2.902
Specific gravity
—
—
Streak
—
Pearly on cleavages
Luster
—
Excellent on {110} and {110}, poor on {010}
Cleavage
—
P-1
Space group
—
—
Structural group
—
Are · Approved
IMA
—
1973
Named in
—
White to grayish or greenish white
Typical colors
—
Na · Ca · Si · O · F
Elements
—