VS
Name
—
Mg(SO₄)·7H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
1.82
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Good on {001}
Cleavage
—
P2_1/c
Space group
—
Melanterite
Structural group
—
Aps · Approved
IMA
—
2003
Named in
—
Turquoise-blue
Typical colors
—
Mg · S · O · H
Elements
—