VS
Name
—
NaCuMgMg₂(AsO₄)₃
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Monoclinic
Crystal system
—
3
Mohs hardness
—
4.15
Specific gravity
—
White to very pale violet
Streak
—
Vitreous
Luster
—
Perfect on {010}; good on {100} and {001}
Cleavage
—
C2/c
Space group
—
Alluaudite
Structural group
—
Jhl · Approved
IMA
—
1980
Named in
—
Blue-violet
Typical colors
—
Na · Cu · Mg · As · O
Elements
—