VS
Name
—
NaCaBeSi₂O₆F
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Orthorhombic
Crystal system
—
3.5–4
Mohs hardness
—
2.96
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
{001}, perfect; {100}, {010}, and {201}, distinct
Cleavage
—
P1
Space group
—
—
Structural group
—
Lph · Grandfathered
IMA
—
1840
Named in
—
Whitish green, greenish white, deep green with a yellow tinge, wine-yellow
Typical colors
—
Na · Ca · Be · Si · O · F
Elements
—