VS
Name
—
Be₃(SiO₄)(OH)₂
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
5
Mohs hardness
—
2.46–2.54
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Perfect on {001}, another parallel to [001] 45° to (010)
Cleavage
—
P2_1/c
Space group
—
—
Structural group
—
Sbtd · Approved
IMA
—
1957
Named in
—
Colorless, yellow, brownish, white, gray
Typical colors
—
Be · Si · O · H
Elements
—