Minerals are substances that occur naturally in the earth and are not formed from animal or vegetable matter.
It is a mineral with a density greater than 2.9 g/cm3, which most commonly refers to dense constituents of siliciclastic sediments. Because heavy minerals are a minor component of most sedimentary rocks, they must be separated out for examination. Heavy mineral separation generally involves the use of a dense liquid in either a separating funnel or a centrifuge.
Any rock-forming mineral that has a specific gravity of less than 2.8 and is generally light in color, for example, quartz, feldspar, calcite, dolomite, muscovite, feldspar.
Minerals with densities above 2.9 g / cm3 are heavy minerals. Examples, are ilmenite, sillimanite, garnet, zircon, rutile, monazite, magnetite, titanium, chromite, tin, diamond, gold, and platinum palladium.
Light minerals: It has a specific gravity of less than 2.8 grams per cubic centimeter. For example, quartz, feldspar, calcite, dolomite, muscovite, and feldspathoids.