Geography Uses of Metamorphic Rocks 1. Slate and marble are used in building houses. 2. Graphite are used in the ink industry. 3. Quartzite is used in making glass. Locations where metamorphic rocks can be found are Kano, Adamawa, Edo, Kogi, Oyo, Sokoto, Kaduna etc. ← Previous Areas to Find Sedimentary Rocks in Nigeria Next → General Economic Importance of Rocks to Man Leave a comment Cancel replyYou must be logged in to post a comment.