Zimbabweite | |
Category: | Oxide minerals |
Imasymbol: | Zbb[1] |
Strunz: | 4.JA.40 |
System: | Orthorhombic |
Class: | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Symmetry: | Ccmb |
Unit Cell: | a = 12.23 Å, b = 15.29 Å c = 8.66 Å, Z = 4 |
Color: | Yellow, yellow-brown |
Luster: | Adamantine |
Zimbabweite is a yellow brown mineral with orthorhombic crystal habit and a hardness of 5, with formula .[2] It is generally classed as an arsenite but is notable for also containing niobium and tantalum. It was discovered in 1986 in kaolinized pegmatite, i.e. weathered to clay, in Zimbabwe.[2]