Explanation

layered silicate mineral. The substitution of isomorphism in cations is common. According to the ratio of Fe2+to all cations and the content of silicon atoms, chlorite is divided into several minerals. The crystal structure of each mineral species is also somewhat different. They can be separated only when they are accurately identified, so these minerals are generally called chlorite when they are identified by naked eyes. The stable polytype is a monoclinic system. Pseudohexagonal lamellar, short columnar crystal. Often present as a scale like aggregate. Green with different shades of black, brown, yellow, blue, etc. When the iron content is high, the color will deepen. glass luster, pearly luster on cleavage surface. Mohs hardness 2-3. Parallel {001} sets of extremely complete cleavage. The sheet is flexible to distinguish it from glauconite. Mainly occurring in rock alteration zones of schist and low-temperature hydrothermal deposits, as well as in sediments near the coast.

Classification