VS
Name
—
Ca(Cu,Zn)₄(SO₄)₂(OH)₆·3H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Monoclinic
Crystal system
—
—
Mohs hardness
—
3.07
Specific gravity
—
—
Streak
—
Vitreous, pearly on cleavages
Luster
—
Perfect on {100}
Cleavage
—
C2/c
Space group
—
Devilline
Structural group
—
Spe · Grandfathered
IMA
—
1881
Named in
—
Sky-blue; greenish blue in transmitted light
Typical colors
—
Ca · Cu · Zn · S · O · H
Elements
—