Mica waa mid ka mid ah macdanta ugu weyn ee samaysa dhagaxa, crystal-kuna waxa uu leeyahay qaab-dhismeed lakabaysan oo gudaha ah, sidaas awgeed waxa uu soo bandhigayaa crystal flake hexagonal. Mica waa erey guud oo loogu talagalay kooxda mica ee macdanta, oo ay ku jiraan biotite, phlogopite, muscovite, lepidolite, sericite, iyo lepidolite. Guryaha Macdanta ah ee...
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