IMA mineral species

Nontronite

Na₀.₃Fe₂((Si,Al)₄O₁₀)(OH)₂ * nH₂O

Smectite, phyllosilicate mineral.

OrangeYellowGreenBrown

Nontronite specimen
Mineraly.sk - nontronit.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaNa₀.₃Fe₂((Si,Al)₄O₁₀)(OH)₂ * nH₂O
ElementsNa, Fe, Si, Al, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolNon
Nickel–Strunz class9.EC.40

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