VS
Name
—
Cu₅(PO₄)₂(OH)₄
Formula
—
Mineral Species
Entry type
—
Phosphates
Chemical class
—
Monoclinic
Crystal system
—
4.5–5
Mohs hardness
—
4.15–4.35
Specific gravity
—
Pale green to pale bluish green
Streak
—
Vitreous to resinous
Luster
—
Perfect on {100}
Cleavage
—
P2_1/c
Space group
—
—
Structural group
—
Pmlc · Grandfathered
IMA
—
1813
Named in
—
Dark emerald-green, dark green, blackish green, bluish green; green to bluish green in transmitted light
Typical colors
—
Cu · P · O · H
Elements
—