VS
Name
—
Al₁₁(PO₄)₉(OH)₆·38H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Orthorhombic
Crystal system
—
2–3
Mohs hardness
—
1.93–1.99
Specific gravity
—
—
Streak
—
Dull to waxy
Luster
—
Perfect on {001}
Cleavage
—
—
Space group
—
—
Structural group
—
Vhg · Grandfathered
IMA
—
1909
Named in
—
White, pale green, pale yellow, pale brown; colorless in transmitted light
Typical colors
—
Al · P · O · H
Elements
—