Which ore minerals are abundant in sedimentary rocks that are approximately two billion years old?
A) copper sulfides
B) aluminum oxides
C) iron oxides
D) copper oxides

Question

Quizplus · Accepted Answer

Iron oxides are abundant in sedimentary rocks that are approximately two billion years old. The most common types of iron oxides found in these rocks are hematite and magnetite, which are important sources of iron ore. Copper sulfides and copper oxides are typically found in igneous rocks, while aluminum oxides are more commonly associated with lateritic soils.

Which Ore Minerals Are Abundant in Sedimentary Rocks That Are