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Calcined mica powder
Mica mainly crystallizes into monoclinal crystal system, which is pseudohexagonal thin flake, scaly, platy, and sometimes pseudohexagonal column.Hardness 2~3, specific gravity 2.70~3.20, loose density 0.3-0.5.The refractive index of mica powder increases with the increase of iron content, which can be raised from low normal to medium normal, and lightning rod can be installed.
