VS
Name
—
KHMg₂B₁₂O₁₆(OH)₁₀·4H₂O
Formula
—
Mineral Species
Entry type
—
Oxides & Hydroxides
Chemical class
—
Monoclinic
Crystal system
—
4–4.5
Mohs hardness
—
2.128
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
On {001}, {101}, perfect; on {100}, good
Cleavage
—
C2/c
Space group
—
—
Structural group
—
Kbo · Grandfathered
IMA
—
1889
Named in
—
Colorless to white, uncommonly reddish brown; colorless in transmitted light
Typical colors
—
K · H · Mg · B · O
Elements
—