VS
Name
—
Na₄CaSi₆O₁₄(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
5.5–6
Mohs hardness
—
2.55
Specific gravity
—
—
Streak
—
Vitreous, pearly on {010} cleavage
Luster
—
Good on {010}; poor on {101}, intersecting at 83±
Cleavage
—
Pcab
Space group
—
—
Structural group
—
Kva · Approved
IMA
—
1982
Named in
—
Pink with a violet hue
Typical colors
—
Na · Ca · Si · O · H
Elements
—