Sharp yellow crystals of the very rare mineral kombatite from the type locality. Kombatite in well formed crystals is extremely rare, since it is usually almost massive. From: Kombat Mine, Grootfontein, Namibia. — Photo: David Hospital · CC BY-SA 4.0
Kombatite
Kombatite is an IMA-recognized mineral species in the vanadate class, with the chemical formula Pb₁₄O₉(VO₄)₂Cl₄.
It crystallizes in the monoclinic crystal system (space group C2/c).
Key properties: Mohs hardness 2–3; specific gravity 4.3; Pale yellow streak; Adamantine luster; optically biaxial.
IMA symbol Kb, IMA status: approved, named in 1985.
A rare component of layered manganese ores.
It is found associated with Hematite, calcite, hausmannite, kentrolite, a mineral similar to harkerite.
The name refers to the Kombat mine, Namibia, in which it occurs.