d6dc8cf8_KS3_Ex___Earth_Science_On_Site__uitable_questions_at_this_site
[Acceptable responses] The rock is made of coarse crystals, up to 5mm in size. This means the rock is coarse grained and cooled slowly (in a large batholith, deep underground) allowing the crystals to grow large.
What does the size of the crystals tell you about the cooling of this magma?
MEL/KS3/Ex - Earth Science On-Site