IMA mineral species

Humboldtine

Fe²⁺(C₂O₄)⋅2H₂O

Oxalate mineral.

YellowGold

Humboldtine specimen
Humboldtine.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaFe²⁺(C₂O₄)⋅2H₂O
ElementsFe, C, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolHbd
Nickel–Strunz class10.AB.05

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