Crystopedia
IMA mineral species

Dualite

Na₃₀(Ca,Na,Ce,Sr)₁₂(Na,Mn,Fe,Ti)₆Zr₃Ti₃Mn[Si₅₁O₁₄₄](OH,H₂O,Cl)₉

Cyclosilicate mineral.

Yellow

Properties

⛏ Mohs hardness5
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💅🪙🍶🔪💎

A steel knife scratches it, it won't scratch glass.

🔷 Hexagonal✏️ streak white
Chemical formulaNa₃₀(Ca,Na,Ce,Sr)₁₂(Na,Mn,Fe,Ti)₆Zr₃Ti₃Mn[Si₅₁O₁₄₄](OH,H₂O,Cl)₉
ElementsNa, Ca, Ce, Sr, Mn, Fe, Ti, Zr, Si, O, H, Cl
Crystal systemHexagonal
Mohs hardness5
Density—
Streakwhite
Color—
IMA symbolDua
Nickel–Strunz class9.CO.10

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

🌍 Where it's found

Type locality (where it was first described): Alluaiv Mountain, Russia

  • Type locality
  • Notable source / deposit
  • Country of origin

Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.

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