Question

Igneous rocks are very useful as good....... minerals

Answer 1

Explanation:

There are relatively few minerals that are important in the formation of common igneous rocks, because the magma from which the minerals crystallize is rich in only certain elements: silicon, oxygen, aluminium, sodium, potassium, calcium, iron, and magnesium.

Geological significance

Answer 2

for the façades (fronts) of buildings, for expensive kitchen worktops and gravestones.

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