During fractional crystallization of a magma body,the first mineral that is expected to crystallize from the magma will be
A) identical in chemical composition to the magma.
B) more mafic than the magma.
C) more felsic than the magma.
D) The composition of the mineral is not predictable.

Question

Quizplus · Accepted Answer

During fractional crystallization, the minerals that crystallize first are typically more mafic or iron and magnesium-rich than the magma, as these elements have a higher early-crystallizing temperature. This process leads to the evolution of the magma towards a more felsic or silica-rich composition as the remaining liquid becomes depleted in these elements.

During Fractional Crystallization of a Magma Body,the First Mineral That