The new ELI today is 'Building silicates; simulating crystal size during the cooling of magma and during recrystallisation in solid rock'.
This Earthlearningidea is a consolidation exercise to show how cooling/recrystallisation rates might explain crystal size in igneous and metamorphic rocks.
Related activities can be found in the categories 'Igneous processes' and 'Metamorphic processes'.
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