... Sericite,Muscovite ,gold Mica.phlogopite, Mica for Oil Drilling 2) Wet method and Dry method Sericite ... Mica 3) High qualit Mica for Oil drilling DescriptionMica is a naturally occurring loss circulation material ... can be utilized in water base or oil base drilling fluids. Quality Specification ItemIndexAppearanceFlowing FlakesLoose Density2.6 ... Muscovite,Biotite,phlogopite, Mica for Oil Drilling