VS
Name
—
Cu₂Cl(OH)₃
Formula
—
Mineral Species
Entry type
—
Halides
Chemical class
—
Monoclinic
Crystal system
—
3
Mohs hardness
—
3.77
Specific gravity
—
—
Streak
—
Adamantine to vitreous
Luster
—
Perfect on {012}
Cleavage
—
P2_1/n
Space group
—
Atacamite
Structural group
—
Cata · Approved
IMA
—
1993
Named in
—
Green to dark greenish black, rarely greenish blue
Typical colors
—
Cu · Cl · O · H
Elements
—