VS
Name
—
CaCu₄(SO₄)₂(OH)₆·3H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
3.13
Specific gravity
—
Pale green
Streak
—
Vitreous, may be pearly on {001}
Luster
—
On {001}, perfect; on {110}, {101}, {101}, distinct
Cleavage
—
P2_1/c
Space group
—
Devilline
Structural group
—
Dev · Approved
IMA
—
1864
Named in
—
Blue-green, dark emerald-green, verdigris-green; green in transmitted light
Typical colors
—
Ca · Cu · S · O · H
Elements
—