State the economic significance of rocks.

The economic significance of rocks are-

1. Rocks are of great resource value, some directly and some as constituents of minerals.
2. Soils are derived from weathering of rocks.
3. Almost all types of building materials used for paving roads, floors or building walls of houses or various other structures including bridges come from rocks.
4. Rocks are a source of precious metals like gold, silver, platinum etc.
5. Apart from minerals and fossil fuels, even rock wastes have now been used in manufacturing various articles.