Forms from lava containing only one type of molecule
Magma provides energy for underground water to evaporate & form minerals
Sunlight provides energy for lakes & ocean water to evaporate & form minerals
Melted material cools slowly and larger crystals form
Only one type of molecule is found in the melted material
Forms from lakes & oceans with only one type of molecule in it
One type of molecule is dissolved in water
Melted material cools quickly and smaller crystals form
