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chlorite




chlorite
chlorite
Image source: Mineral Information Institute

A group of green clay minerals, related to the micas, and consisting of alternate single layers of biotite, containing ferrous ion (Fe2+), and brucite [(Mg,Al)6(OH)12]. Chlorites are widespread alteration products. Hardness 2–3; relative density 2.6–3.3 depending on iron content.


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   • GEOLOGY AND PLANETARY SCIENCE