Below are possible answers for the crossword clue Mineral used as insulator.
4 letter answer(s) to mineral used as insulator
MICA
any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
Other crossword clues with similar answers to 'Mineral used as insulator'