VS
Name
—
Mg₃B₁₁O₁₅(OH)₉
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Orthorhombic
Crystal system
—
4.5–5
Mohs hardness
—
2.45
Specific gravity
—
—
Streak
—
—
Luster
—
—
Cleavage
—
Pbcn
Space group
—
—
Structural group
—
Pbz · Grandfathered
IMA
—
1956
Named in
—
Colorless, lemon-yellow, dark gray
Typical colors
—
Mg · B · O · H
Elements
—