Ubwoko: ifu ya mika, ibara risanzwe rya mika flake, mika yamabara, mika ya synethic.
Ubutare bwa Mika burimo cyane cyane biotite, phlogopite, muscovite, lepidolite, sericite, chloritite, ferro lepidolite nibindi, kandi placer ni minerval ivanze ya mika na quartz.Muscovite na phlogopite ni amabuye y'agaciro akoreshwa cyane mu nganda.Lepidolite ni minerval yingenzi yibikoresho byo gukuramo lithium.