The chlorite group of minerals derives its name from the common green color of most varieties. The color is known to vary widely in different specimens, however, and to include different shades of green, black, brown, orange, red, pink, purple, blue, yellow, grey, and even white. The morphology is equally diverse. Pseudohexagonal platelets parallel to the basal pinacoid (001) occur in the best
... [Show full abstract] crystallized varieties. These plates range in width from less than a millimeter up to several inches. Occasionally, as in the chlorite in serpentine-chromite deposits from Erzincan, Turkey, and in Swiss Alpine veins, small prismatic and pyramidal faces may be developed as well. Scaly flakes, wedge-shaped aggregates of crystals, spherules, rosettes, and fine-grained earthy masses are of much more common occurrence than the well-formed crystals.