VS
Name
—
Cu₂(AsO₄)(OH)
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Monoclinic
Crystal system
—
3
Mohs hardness
—
4.46
Specific gravity
—
Olive-green to brown
Streak
—
Adamantine to vitreous, pearly to silky if fibrous
Luster
—
{101}, {110}, indistinct
Cleavage
—
P2_1/n
Space group
—
Andalusite
Structural group
—
Oli · Grandfathered
IMA
—
1789
Named in
—
Green, Brown, Yellow, Gray
Typical colors
—
Cu · As · O · H
Elements
—