Dehydrated mica ndiyo mica inogadzirwa necalcining natural mica pakupisa kwepamusoro, iyo inonziwo calcined mica.
Mica yakasikwa yemavara akasiyana-siyana inogona kupera mvura, uye maitiro ayo emuviri nemakemikari akachinja zvakanyanya.Kunyanya kujeka shanduko ndiko kushanduka kwemavara.Semuyenzaniso, yakasikwa chena mica inoratidza ruvara sisitimu inodzorwa neyero uye tsvuku mushure mekuverengera, uye yakasikwa biotite inowanzoratidza ruvara rwegoridhe mushure mekuverenga.