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Types of magma
Basaltic (high in iron and magnesium low in potassium and sodium)
Andesitic (intermediate iron, magnesium, sodium and potassium )
Rhyolitic (low in iron and magnesium, high in potassium and sodium)
Intrusive igneous rocks
Magma underneath the earths surface
Extrusive igneous
Lava above the surface of the earth
Mafic and ultra mafic rocks
Igneous rocks that are the highest in iron and magnesium’s concentration and may appear darker or black in colour
Felsic rocks
Rocks highest in iron and silica compounds
Sedimentary rocks
Deposited sediment that undergoes diagenesis leading to compaction, cementation, recrystallisation and/or other modification to the original sediment.
Metamorphic rocks
Where rock originally formed in an igneous or sedimentary environment recrystallises in reponse to new conditions. They can never be molten as they would return back into an igneous rock. EG limestone undergoes metamorphic processes to become marble.