Question

compare and contrast the four classification pf igneous rock based on composition ultramafic,felsix,intermediate,mafic​

Answer 1

Answer:

In a widely accepted silica-content classification scheme, rocks with more than 65 percent silica are called felsic; those with between 55 and 65 percent silica are intermediate; those with between 45 and 55 percent silica are mafic; and those with less than 45 percent are ultramafic.