Quartz, gold and calcite are examples

They are examples of minerals.

Quartz, gold and calcite are all good examples of minerals. They all fit to the characteristics of minerals.

Minerals are usually inorganic and in a solid state. It has crystal structure and can be represented by a chemical formula. Minerals and rocks are distinct. It can be described in many different physical properties in relation to their chemical composition and structure. The most common characteristics of minerals includes, colour, streak, lustre, habit, hardness, tenacity, cleavage, fracture, specific gravity and parting ...