The first minerals to crystallize from a cooling magma have a
A)high melting point and a low silica content.
B)low melting point and a high silica content.
C)high melting point and a high silica content.
D)low melting point and a low silica content.

Question

Quizplus · Accepted Answer

The first minerals to crystallize from a cooling magma are typically those with a high melting point and a low silica content. This is because silica typically promotes the formation of minerals with lower melting points, so as the magma cools, the minerals with higher melting points will crystallize first. This is known as Bowen's reaction series.

The First Minerals to Crystallize from a Cooling Magma Have