VS
Name
—
SiO₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
7
Mohs hardness
—
2.25–2.28
Specific gravity
—
white
Streak
—
Vitreous, may be pearly on {0001}
Luster
—
Prismatic, poor
Cleavage
—
Cc
Space group
—
Tridymite
Structural group
—
Trd · Grandfathered
IMA
—
1868
Named in
—
White, Colorless, Gray
Typical colors
—
Si · O
Elements
—