Mica---powder and flake,(muscovite, Phlogopite, biotite, sericite,,,,, powder from 10mesh------ -1000mesh
1). Chemical composition:
chemical Muscovite Phlogopite Biotite
SiO2 44.5%-46.18% 36.84%-45.05%
AL2O3 30.71%-37.70% 10.87%-17.75%
Fe2O3 2.30%-5.81% 0.11%-8.76%
K2O 9.02%-9.95% 0.32%-7.06%
Na2O [...]