VS
Name
—
Zn(SO₄)·7H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Orthorhombic
Crystal system
—
2–2.5
Mohs hardness
—
1.98
Specific gravity
—
—
Streak
—
Vitreous, silky if fibrous
Luster
—
On {010}, perfect
Cleavage
—
P2_12_12_1
Space group
—
Epsomite
Structural group
—
Gos · Grandfathered
IMA
—
1845
Named in
—
Colorless, white; pale shades of blue, green, or brown from impurities; colorless in transmitted light
Typical colors
—
Zn · S · O · H
Elements
—