An ore is a rock or mineral that can be mined from the Earth for a profit. (1) Combine titanium dioxide (titanium ore, the mineral sand deposit described above) with chlorine gas and carbon (called coke) at 1,000 degrees C to produce titanium tetrachloride, a yellow liquid, and carbon dioxide gas: (2) Combine titanium tetrachloride liquid with magnesium metal at 800-900 degrees C to replace tita