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Mica is actually a group of minerals mined around the world, but with notable deposits in Africa and Russia.

It has a number of interesting properties making it useful in a variety of specialized applications. Sheet mica has long been used in the electronic and electrical industries because of its combination of electrical, thermal insulating properties and its mechanical properties. Mechanically, it can be shaped, cut, drilled and the natural layered structure allows sheets to be created. It is a good electrical insulator at the same time as being a good thermal conductor which is an uncommon combination.

In an electric iron, its mechanical properties and thermal properties are decisive in why it is employed. Plastic would melt, or a metal conduct too much electricity and most other minerals would be brittle or difficult to shape as needed.
Because Mica is very good at conduting heat AND it won't melt under high heat

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12y ago

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