Multiple choice Which of the following is a set of only carbonate ores? Cassiterite, chromite and hematite Chalcopyrite, argentite and bornite Dolomite, magnesite and malachite Chromite, argentite and magnesite Hematite, bornite and malachite Reveal answer Fill a bubble to check yourself C Correct answer Explanation All are carbonate ores. Dolomite: CaMg(CO3)2 Magnesite: MgCO3 Malachite: Cu2CO3(OH)2