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Yakavharwa mica upfu
Mica inonyanya kujekesa mu monoclinal crystal system, inova pseudohexagonal thin flake, scaly, platy, uye dzimwe nguva pseudohexagonal column.Hardness 2 ~ 3, yakananga giravhiti 2.70 ~ 3.20, yakasununguka density 0.3-0.5. yesimbi yezvinhu, iyo inogona kusimudzwa kubva pasi yakaderera kusvika pakati nepakati, uye tsvimbo yemheni inogona kuiswa.
