IMA mineral species

Ferriandrosite-(La)

MnLaFe³⁺AlMn²⁺(Si₂O₇)(SiO₄)O(OH)

Sorosilicate mineral.

Ferriandrosite-(La) specimen
Ferriakasakaite-(La), Ferriandrosite-(La).png · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaMnLaFe³⁺AlMn²⁺(Si₂O₇)(SiO₄)O(OH)
ElementsMn, La, Fe, Al, Si, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolFea-La

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

🌍 Where it's found

Type locality (where it was first described): Unnamed manganese deposit, Shobu, Japan