IMA mineral species
Rankamaite
(Na,K)₃(Ta,Nb,Al)₁₁(O,OH)₃₁
Oxide mineral.
Properties
| Chemical formula | (Na,K)₃(Ta,Nb,Al)₁₁(O,OH)₃₁ |
|---|---|
| Elements | Na, K, Ta, Nb, Al, O, H |
| Crystal system | Orthorhombic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Rkm |
| Nickel–Strunz class | 4.DM.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
Learn more
- Rankamaite on Mindat.org
- Wikidata item Q3930124 (source of this page's data – you can correct it there)
IMA mineral species
Orthorhombic