15.0 Chromitite layer in (meta)dunite. Day Book Mine, North Carolina. Chromite grains are dominantly <1 – 2 mm and are locally rimmed by the purplish silver chromium chlorite, kammererite, in the chromitite. In the (meta)dunite and chromitite, the olivine of the (meta)dunite is granular and green of various shades and is accompanied by nothing other than chromite and kammererite. The latter mineral and elongation of chromite pods provides the only evidence of metamorphism.