Answer:
he larger the crystals and the more mafic the composition
Step-by-step explanation:
Temperature at which minerals crystallize can determine the nature of composition of the rock and the crystal sizes. 
- When a magma crystallizes at high temperature, the mineral grains have enough time to aggregate around a nuclei. 
 - This makes the sizes big. 
 - Mafic minerals are know to crystallize at high temperatures. 
 - Felsic minerals differentiate at low temperatures.