IMA mineral species

Gjerdingenite-Fe

K₂Fe(Nb,Ti)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O

Cyclosilicate mineral.

Gjerdingenite-Fe specimen
Gjerdingenite-Fe-120479.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaK₂Fe(Nb,Ti)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O
ElementsK, Fe, Nb, Ti, Si, O, H
Crystal system—
Mohs hardness—
Density—
Streak—
Color—
IMA symbolGje-Fe
Nickel–Strunz class9.CE.30c

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

🌍 Where it's found

Type locality (where it was first described): Gjerdingselva outcrops, Norway