VS
Name
—
Ca₂Ni(AsO₄)₂·2H₂O
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Triclinic
Crystal system
—
4
Mohs hardness
—
3.72
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Perfect on {010}
Cleavage
—
—
Space group
—
Fairfieldite
Structural group
—
Ntlm · Approved
IMA
—
2008
Named in
—
Apple green, colorless in transmitted light
Typical colors
—
Ca · Ni · As · O · H
Elements
—