IMA mineral species

Carbokentbrooksite

Na₁₁-₁₂(Na,Ce)₃Ca₆Mn₃Zr₃Nb[(Si₃O₉)₂(Si₉O₂₇)₂SiO](OH)₃(CO₃) * H₂O

Cyclosilicate, mineral.

OrangeYellow

Properties

Chemical formulaNa₁₁-₁₂(Na,Ce)₃Ca₆Mn₃Zr₃Nb[(Si₃O₉)₂(Si₉O₂₇)₂SiO](OH)₃(CO₃) * H₂O
ElementsNa, Ce, Ca, Mn, Zr, Nb, Si, O, H, C
Crystal systemTrigonal
Mohs hardness—
Density—
Streakwhite
Color—
IMA symbolCktb
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): Darai-Pioz glacier, Tajikistan

  • 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.