VS
Name
—
NaCaCu₅(AsO₄)₄Cl·5H₂O
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
3.54
Specific gravity
—
—
Streak
—
Vitreous, waxy, satiny in aggregates
Luster
—
Good on {010}; distinct on {100} and {001}
Cleavage
—
P2_1/n
Space group
—
—
Structural group
—
Lvd · Grandfathered
IMA
—
1837
Named in
—
Lavender, greenish blue
Typical colors
—
Na · Ca · Cu · As · O · Cl · H
Elements
—