IMA mineral species
Kentbrooksite
(Na,REE)₁₅(Ca,REE)₆(Mn²⁺,Fe²⁺)₃Zr₃Nb[Si₂₅O₇₄]F₂ * 2H₂O
Cyclosilicate, mineral.
Properties
| Chemical formula | (Na,REE)₁₅(Ca,REE)₆(Mn²⁺,Fe²⁺)₃Zr₃Nb[Si₂₅O₇₄]F₂ * 2H₂O |
|---|---|
| Elements | Na, Ca, Mn, Fe, Zr, Nb, Si, O, F, H |
| Crystal system | Trigonal |
| Mohs hardness | — |
| Density | — |
| Streak | white |
| Color | — |
| IMA symbol | Ktb |
| Nickel–Strunz class | 9.CO.10 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Learn more
- Kentbrooksite on Mindat.org
- Wikipedia article
- Wikidata item Q3814677 (source of this page's data – you can correct it there)
IMA mineral species
Trigonal
YellowBrown