VS
Name
—
(NH₄)₂Fe²⁺(SO₄)₂·6H₂O
Formula
—
Mineral Species
Entry type
—
Sulfates
Chemical class
—
Monoclinic
Crystal system
—
—
Mohs hardness
—
1.8–1.86
Specific gravity
—
—
Streak
—
Vitreous
Luster
—
Perfect on {102}; distinct on {010}
Cleavage
—
P2_1/a
Space group
—
Picromerite
Structural group
—
Mhr · Approved
IMA
—
1964
Named in
—
Pale green to colorless
Typical colors
—
N · H · Fe · S · O
Elements
—