Karenwebberite
Karenwebberite is an IMA-recognized mineral species in the phosphate class, with the chemical formula NaFe²⁺(PO₄).
It crystallizes in the orthorhombic crystal system (space group Pbnm). It is a member of the Olivine structural group.
Key properties: Mohs hardness 4.5; specific gravity 3.65; Very pale grayish green streak; Greasy to vitreous luster; optically biaxial.
IMA symbol Kwb, IMA status: approved, named in 2011.
Occurs as late-magmatic exsolution lamellae hosted by graftonite in plagioclase within the central portion of a granitic pegmatite dike.
It is found associated with Graftonite, Na-bearing ferrisicklerite.
The mineral was named to honor Karen Louise Webber, Assistant Professor Research, in the Mineralogy, Petrology and Pegmatology Research Group, Department of Earth and Environmental Sciences.