Minerals and Energy resources

Chapter 5

Minerals And Energy Resources 

  Minerals

Properties of Minerals

•      Homogeneous naturally occurring substances 
•      That have a definite internal structure.
•      Found in various forms of nature. 
•      Are used for a variety of purposes.

Rocks 

•     Rocks are combinations of homogeneous substances called minerals.
•     E.g., Diamond, limestone, fluoride, aluminium etc.

Diamond 

Limestone

Availability of Minerals 

• Limestone consist of a single mineral only.
• Majority of rocks consists of several minerals.
• Only minerals are available in abundant in the form of rocks.
• There are nearly 2000 minerals found in the world.

Physical properties (or) How do the minerals look like?

Physical Properties of Minerals 

• Colour, hardness, crystal forms, luster and density changes according to the materials it has in it.
• Geologists use these properties to classify the minerals.

Classification of minerals 

•   Minerals are classified on the the basics of usage and commercial purposes
  

Mode of Occurrence of Minerals.

Where do minerals found?

Ores 

• Accumulation of any mineral mixed with other elements.
• Eg: Iron ore.

Ore

Occurrence of Minerals

In Igneous and Metamorphic Rocks