VS
Name
—
(Ca,Y)₃Al(PO₃OH)(CO₃)(OH)₆·12H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Hexagonal
Crystal system
—
3.5–4
Mohs hardness
—
2.15
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Good on {1010} and {0001}
Cleavage
—
P6_3
Space group
—
Ettringite
Structural group
—
Msn · Approved
IMA
—
1999
Named in
—
White to colorless
Typical colors
—
Ca · Y · Al · P · O · H · C
Elements
—