VS
Name
—
Cu(SO₄)·7H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Monoclinic
Crystal system
—
2–2.5
Mohs hardness
—
1.94
Specific gravity
—
—
Streak
—
Vitreous, silky or pearly if fibrous
Luster
—
{001}, imperfect
Cleavage
—
P2_1/c
Space group
—
Melanterite
Structural group
—
Boo · Grandfathered
IMA
—
1903
Named in
—
Blue; pale blue in transmitted light
Typical colors
—
Cu · S · O · H
Elements
—