VS
Name
—
Al₂OSiO₄
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Triclinic
Crystal system
—
5.5–7
Mohs hardness
—
3.53–3.65
Specific gravity
—
white
Streak
—
Vitreous to pearly
Luster
—
Perfect on {100}, good on {010}, (100) ^ (010) = 79±; parting on {001}
Cleavage
—
P-1
Space group
—
—
Structural group
—
Ky · Approved
IMA
—
1789
Named in
—
Blue, Green, White, Gray, Orange
Typical colors
—
Al · O · Si
Elements
—