Karibibite Locality: Oumlil Mine (incl. Oumlil East Mine), Oumlil, Bou Azer District (Bou Azzer District), Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco Original description: A 2.2 by 1.8 cms mass with yellowish microcrystals. JSS specimen and photo. — Photo: John Sobolewski (JSS) · CC BY 3.0
Karibibite
Karibibite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Fe³⁺₃(As³⁺O₂)₄(As³⁺₂O₅)(OH).
It crystallizes in the orthorhombic crystal system.
Key properties: specific gravity 4.07; Bright yellow streak; optically biaxial.
IMA symbol Kab, IMA status: approved, named in 1973.
Found in granite pegmatites.
It is found associated with Löllingite, eosphorite, scorodite, quartz (Karibib, Namibia); löllingite, scorodite, schneiderhöhnite, parasymplesite, quartz (Bou Azzer, Morocco).
The name refers to the Karibib pegmatite district, Namibia, where the species occurs.