The remarkable properties of high-grade sheet mica as an insulator make it invaluable as a strategic war material, where it is essential for radio tubes, radar equipment, condensers, airplane ...

“Sheet” mica refers to books of mica either mined from hard rock or from loosely consolidated clayey material formed from the weathering. These can be readily split into specific thicknesse ...

The country was the fourth largest mica exporter worldwide in 2015, and since then it has overtaken India as the biggest global exporter of sheet mica, the grade of mica that is used extensively ...