VS
Name
—
Cu₄(SO₄)(OH)₆·2H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Monoclinic
Crystal system
—
2.5–3
Mohs hardness
—
3.28–3.34
Specific gravity
—
—
Streak
—
Vitreous to silky
Luster
—
On {001} and {010}
Cleavage
—
Pc
Space group
—
—
Structural group
—
Lgt · Grandfathered
IMA
—
1864
Named in
—
Deep blue, greenish blue, blue-green
Typical colors
—
Cu · S · O · H
Elements
—