Category Oxide minerals Crystal system Orthorhombic | Strunz classification 4.JA.40 Space group Ccmb | |
Formula(repeating unit) (Na,K)2PbAs4(Nb,Ta,Ti)4O18 Crystal class Dipyramidal (mmm)H-M symbol: (2/m 2/m 2/m) | ||
Zimbabweite is a mineral; formula (Na,K)2PbAs4(Nb,Ta,Ti)4O18. It is generally classed as an arsenite but is notable for also containing niobium and tantalum. A yellow brown mineral with orthorhombic crystal habit and a hardness of 5. It was discovered in 1986 in kaolinized pegmatite, i.e. weathered to clay, in Zimbabwe.
References
Zimbabweite Wikipedia(Text) CC BY-SA