VS
Name
—
CuFe³⁺₂(SO₄)₄·6H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Monoclinic
Crystal system
—
2.5
Mohs hardness
—
2.632
Specific gravity
—
—
Streak
—
Vitreous, pearly on cleavages
Luster
—
On {001}, perfect
Cleavage
—
P2_1/c
Space group
—
—
Structural group
—
Rns · Grandfathered
IMA
—
1928
Named in
—
Bright sky-blue; pale blue in transmitted light
Typical colors
—
Cu · Fe · S · O · H
Elements
—