The name chlorite is from the Greek chloros, meaning "green".Chlorite has habits similar to the other micas: foliated books, scaly aggregates, and individual flakes in a quartz-feldspar matrix are common. Rare pseudohexagonal crystals are known.
Chlorite is a common mineral in low- to intermediate-grade metamorphic rocks, diagnostic of the greenschist facies. It is also a common secondary mineral after biotite, muscovite. and other mafic silicates in igneous and metamorphic rocks, and is sometimes found in sediments. Many greenish rocks owe their color to the presence of chlorite. Associated minerals include quartz and feldspars, epidote, muscovite, actinolite, albite, and a number of ferromagnesian silicates.
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