Which Major Islands and Minerals of the World term is correctly associated with important identifying fact: “an iron oxide with the formula Fe2O3”, and also with “an important ore of iron”?

Correct Answer: Option D — Hematite. Hematite is correct because it is an iron oxide with the formula Fe2O3. Hematite is also associated with an important ore of iron. A further identifying fact is that Hematite is an iron oxide with the formula Fe2O3. Another useful fact is that Hematite is associated with an important ore of iron. Why the other options are incorrect: Option A — Chalcopyrite: It is a copper iron sulphide mineral and is associated with a major ore of copper; those are the identifying facts of Chalcopyrite. Option B — Galena: It is a lead sulphide mineral with formula PbS and is associated with the principal ore of lead; those are the identifying facts of Galena. Option C — Sphalerite: It is a zinc sulphide mineral and is associated with the principal ore of zinc; those are the identifying facts of Sphalerite. Exam Takeaway: Link Hematite with “an iron oxide with the formula Fe2O3” and “an important ore of iron” for quick revision.