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Igneous is formed by molten magma
As it cools, it could be
Plutonic, intrusive
Where magma's slowly coolin'
Beneath the Earth's surface

Or it could be volcanic, extrusive
Red hot substance is blown from a mountain

Felsic rock, ultrapotassic,
Peraluminous, ultramafic

Rocks are formed in so many different ways
It just takes a couple hundred million days
So next time you're out walking around
Try to classify all the rocks that you have found

The rock known as...

Sedimentary tends to hold and carry
All the resources that we use daily
It's made of detritus, just dead organic matter and
Evaporates, then compacted harder

The rock known as...

Metamorphic comes from other rocks
It's smashed and heated under Earth's surface
Caused by collision of tectonic plates
Marble, gneiss, quartzite and slate

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