Types of Igneous Rocks

Though originated from the same lava Igneous rocks are of different types and texture ,,how amazing are the Earth processes..
The classification is on the following basis;
1. on the basis of amount of the SiO2 :acidic ( granite, biotite mica) or basic(gabbro,)






2. on the basis of texture: Felsic or light group(quartz, Feldspar),

Mafic or dark group(pyroxenes, amphiboles,)

and ultramafic(pridotite, dunite).

Dutite

3.on the basis of mode of occurance : Intrusive and extrusive (  to be discussed in later posts)