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super grade mica powder Mica powder is a group of aluminum silicate minerals with layer-structure, and rich in elements of potassium(K), aluminum(Al), magnesium and lithium etc. Dolomite (White Mica) is one of the similar sub-categories in mica group. It is transparent with no color or light color, and possesses the glasss shine. Its Mohs hardness is about 2-2.5, specific density is 2.7-3.5. Dolomite possesses lots of excellent properties, for example electric insulating, high temperature proof, acid and alkali resist, and corrosion proof ect.Element Data for Reference:ElementSiO2Al2O3K2OFe2O3CaONa2OMgOH2OContent%44 5020 339 112 60.02 0.770.6 1.80.3-22-3Specifications and Data for Reference: 1. Wet Ground Mica Powder SizeOver Sieve%Sand%Loose DensityWaterLostWhitenessDia-thick Ratio120µm/ 120mesh250µm0.1 125µm5.01.00.2514.3>70>7090µm/ 160mesh180µm0.1 90µm5.01.00.2514.3>70>7075µm/ 200mesh150µm0.1 75µm5.00.50.2314.3>70>7045µm/ 325mesh112µm0.1 45µm5.00.50.2314.3>70>7038µm/ 400mesh75µm0.1 38µm10.00.50.2314.3>70>702. Dry Ground Mica Powder Size900µm/ 20 mesh455µm/ 40 mesh300µm/ 60 mesh150µm/ 100 mesh75µm/ 200 mesh45µm/ 325 mesh35µm/ 400 mesh28µm/ 500 mesh23µm/ 600 mesh18µm/ 800 meshOver Sieve%5.05.05.05.05.05.05.05.010.010.0Fe ppm400400800800800400400300300300Sand0.50.51.01.00.50.50.50.50.50.5Loose Density0.30.30.30.30.250.250.220.220.220.22Water1.01.01.01.01.01.01.01.01.01.0Whiteness>60>60>60>60>60>60>60>65>65>65Dia-Thick- nessRatio>60>60>60>60>60>60>60>60>60>60