VS
Name
—
MgAl₂(PO₄)₂(OH)₂·8H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Triclinic
Crystal system
—
3.5
Mohs hardness
—
2.23
Specific gravity
—
White
Streak
—
Vitreous, pearly on {010}
Luster
—
{010}, perfect; {100}, fair; {001}, poor
Cleavage
—
P-1
Space group
—
Laueite
Structural group
—
Gdo · Grandfathered
IMA
—
1930
Named in
—
Smoky white, buff, to colorless, crystals pale pink or pale green on tips; colorless in transmitted light
Typical colors
—
Mg · Al · P · O · H
Elements
—