IMA mineral species

Osumilite

(K,Na)(Fe²⁺,Mg)₂(Al,Fe³⁺)₃(Si,Al)₁₂O₃₀

Cyclosilicate mineral.

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Osumilite specimen
Osumilite-481253.jpg · Wikimedia Commons (see file page for author & license)

Properties

🔷 Hexagonal✏️ streak blue-gray
Chemical formula(K,Na)(Fe²⁺,Mg)₂(Al,Fe³⁺)₃(Si,Al)₁₂O₃₀
ElementsK, Na, Fe, Mg, Al, Si, O
Crystal systemHexagonal
Mohs hardness—
Density—
Streakblue-gray
Color—
IMA symbolOsm
Nickel–Strunz class9.CM.05

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