There is no mineral that is used for all electrical instruments, but in the computer hardware business, silicon is a very important component, as it is used in many computer parts.
A California mineral that is used in making electrical equipment is silicon. Silicon is used as a conductor of electrical impulses and also as a receptor in the makeup of a computer. Silicon chips can hold a multitude of information.
Copper
The regular mineral lead Is used for making pencils and other things
aluminium is used for making electrical cables as the metal do not melt easily
Potassium mineral salts are used for making some of the enzymes the plants don't need. Potassium mineral salts are used for making some of the enzymes the plants need. Or cheese?......
Gypsum
gypsum
Copper
It's petroleum
Not a mineral but a metal- copper.
Wires are generally not comprised of minerals, but metals. Examples are copper, aluminum, and gold. There are some insulation systems that use "rock wool" (which is mineral based), for high temperature or high radiation exposure.
some mineral resources are used for making tin. this is used for making tins like tin of milk,tin of cocoa.other mineral resources are; iron gold copper and so on and so forth