IMA mineral species

Melanterite

Fe²⁺SO₄·7H₂O

Heptahydrated iron(II) sulfate.

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Melanterite specimen
Melanterite-657241.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaFe²⁺SO₄·7H₂O
ElementsFe, S, O, H
Crystal systemMonoclinic
Mohs hardness2
Density—
Streakwhite
Color—
IMA symbolMln
Nickel–Strunz class7.CB.35

“—” means no reliable value in Wikidata yet. Check Mindat for full data.