Siderite is an ore of ___________

____________is the second most abundant metal on the earth crust.

Magnetite is an ore of ___________

___________is the most abundant metal.

_________are naturally occurring chemical substances in the earth's crust obtainable by mining.

__________is a major component of many igneous minerals including mica and clays.

The molecular formula of calamine is ____________

Ores are usually contaminated with earthly or undesired materials known as __________

Malachite is an ore of __________

The entire scientific and technological process used for the isolation of the metal from its ore is known as _______________