This slides gives you the classification of rocks. Information about Igneous rocks.

2. STONES
The stone is always obtained from rock.
The rock quarried from quarries is called stone.

3. CLASSIFICATION OF ROCKS
Geological
Igneous
Rocks
Sedimentary
Rocks
Metamorphic
Rocks
Physical
Stratified
Rocks
Un-stratified
Rocks
Follated
Rocks
Chemical
Siliceous
Rocks
Argillaceous
Rocks
Calcareous
Rocks

4. IGNEOUS ROCKS
Formation
• Formed by solidification of magma.
Example
• Basalt, dolerite, granite, syenite and
trap.
Minerals
• Augite, felspar, horn blende, mica,
quartz.

5. IGNEOUS ROCKS
Plutonic
Rocks
• Formed in bottom layer.
• Slow cooling.
• Coarsely crystalline.
• Ex- Granite, Syenite, Periodolite.
Hypabasal
Rocks
• Formed in central layer.
• Moderately cooling.
• Fine crystalline.
• Ex- Dolerite, Apite.
Volcanic
Rocks
• Formed in upper layer.
• Quickly cooling.
• Amorphous and Glassy.
• Ex- Basalt, Trap.