Question

What are ores? Give example. What are ‘placer deposits’? Give example of mineral found in such deposits.

Answer 1

Ores are naturally occurring substance which contain minerals may be one or more . Ex bauxite ore which contain aluminium , iron ore , etc
Placer deposits are found in the sands of valley floors and base of hills . It is also known as alluvial deposits .
Gold silver tin etc are mined in such deposits

Answer 2

Ores and minerals

Explanation:

Ores are natural rocks or sediments that contain desirable minerals, typically metals, that can be extracted from it. Ore is extracted from the earth through mining and refined, often via smelting, to extract the valuable elements.

Certain minerals may occur as alluvial deposits in sands of valley floors and base of hills. These deposits are called 'placer deposits'. They generally contain minerals which are not corroded by water.

Gold, silver, tin and platinum are examples of some important minerals found in 'placer deposits'.