Mica may refer to: Mica, a silicate mineral group an electric insulator in electronics (synecdoche) a synthetised gumm (usually blue or grey) used as electric insulator instead of traditional "silicate mineral" slices in electronics, to provide electric insulation for an electronic component mounted on heat sink (language abuse, see mica insulator) The biblical prophet Micah The book of Micah in the Tanakh Mica's a song by Danish indie rock band Mew (band) Mica, a commune in Cluj County,… (More on Mica)