Kentbrooksite [ (Na,REE)15(Ca,REE)6Mn3Zr3Nb(Si25O73)(O,OH,H2O)3(F,Cl)2 ]
Material properties
| Formula | (Na,REE)15(Ca,REE)6Mn3Zr3Nb(Si25O73)(O,OH,H2O)3(F,Cl)2 |
| Abbreviation | Ktb |
| Classifications | Minerals containing OH, Minerals containing H2O |
| IMA Status | Approved (IMA 1996-023) |
| Search other databases | webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database |
| Tags | Halide , Hydrated , Hydroxide , Mineral, Silicate |
Composition
| Element | Atoms |
|---|---|
| Ca | ~3 |
| H | ~3 |
| Cl | ~1 |
| O | 76 |
| Mn | 3 |
| Zr | 3 |
| Nb | 1 |
| Si | 25 |
| F | ~1 |
| Na | ~7.5 |
| REE | ~10.5 |
Specimens of Kentbrooksite
| Name | Owner | Materials | Phase purity | Image |
|---|---|---|---|---|
| MES302 Kentbrooksite / Nepheline / Acmite | CSIRO | Acmite, Kentbrooksite (42.8%), Nepheline, Rodolicoite, Sideronatrite-2M | 42.8 |
