VS
Name
—
K₃Na₂Ca₁₀Al₁₅(OH)₇(PO₄)₂₁·26H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
3
Mohs hardness
—
2.65–2.68
Specific gravity
—
—
Streak
—
Vitreous, pearly on cleavages
Luster
—
On {001}, perfect, micaceous
Cleavage
—
A2/a
Space group
—
—
Structural group
—
Egs · Grandfathered
IMA
—
1930
Named in
—
White to colorless, grayish green; colorless in transmitted light
Typical colors
—
K · Na · Ca · Al · O · H · P
Elements
—