Mica shine sunan gaba ɗaya na ma'adinan ƙungiyar mica.Ita ce aluminosilicate na potassium, aluminum, magnesium, iron, lithium da sauran karafa, wadanda dukkansu masu lebur ne kuma monoclinic.crystal ne pseudohexagonal lamellae ko farantin karfe, lokaci-lokaci columnar.Tsagewar lamellar ya cika sosai, tare da luster gilashi da takarda na roba.Ma'anar refractive na mica yana ƙaruwa tare da karuwar abun ciki na ƙarfe, daga ƙananan haɓaka zuwa matsakaicin matsakaici.Iri-iri ba tare da baƙin ƙarfe ba shi da launi a cikin flake.Mafi girman abun ciki na ƙarfe, mafi duhu launi, kuma mafi polychromatic da absorptive.

Girman Mica flake: 6-10 raga, 10-20 raga,
Mica foda: 200mesh, 325mesh, 600mesh, 800mesh, 1250mesh, 2000mesh, 3000mesh da 5000mesh.

Aikace-aikace
A cikin masana'antu, biotite yafi amfani da rufin sa da juriya na zafi, kazalika da juriya na acid, juriya na alkali, juriya na matsawa da juriya na peeling, a matsayin kayan haɓaka kayan aikin lantarki da kayan lantarki;Na biyu, ana amfani da ita don kera tagogi da sassan injina na tukunyar tururi da tanda mai narkewa.Ana iya sarrafa kwakwalwan kwamfuta na Mica da foda na mica zuwa takarda mica, kuma za su iya maye gurbin takardar mica don samar da kayayyaki masu kauri iri-iri masu rahusa da iri ɗaya.