VS
Name
—
Ca₂Mg(PO₄)₂·2H₂O
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Triclinic
Crystal system
—
3.5–5
Mohs hardness
—
2.93–2.95
Specific gravity
—
White
Streak
—
Subvitreous, silky if fibrous
Luster
—
Fair on {001} and {010}
Cleavage
—
P-1
Space group
—
Fairfieldite
Structural group
—
Coll · Grandfathered
IMA
—
1927
Named in
—
Brown, chocolate-black, light brown, yellowish white, white, colorless, pale blue if zincian
Typical colors
—
Ca · Mg · P · O · H
Elements
—