Mica in a sentence as a noun

RNA and many proteins and lipids in our cells have negative charges like mica.

Scoff if you must, but physicists are fond of their spherical cows and mica capacitors.

RNA's phosphate groups are spaced one half nanometer apart, just like the negative charges on mica.

For centuries, extracting aluminium out of its alloy was a hard problem, or extracting mica.

Mica definitions

noun

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

See also: isinglass