The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). The Magnesite Deposits of Bulong. North-East Coolgardie Goldfield, Geological Survey of Western Australia, Bulletin 82, 1919 Viljo & al. 2003. MINEO Boreal enviromental test site, Finland. Contamination 2. “. Metal ore can be smelted into Magnesium Bar. „. ~ My Time at Portia. Magnesium Ore is a metal ore found in Portia. It is required when crafting Aluminum Plate Aluminum Wires, Magnesium Powder, and Stainless Aluminum . Categories. Community content is available under CC BY-NC-SA 3.0 unless otherwise noted.i)Magnesite is a magnesium ore mineral and has the chemical formula MgCO3. What is the percentage of magnesium in magnesite? ii)Magnetite, Fe3O4, hematite, Fe2O3, are iron ore minerals. On the basis of their chemical formulas, which has thenatural carbonate, e.g., caustic magnesite (magnesia obtained by calcining crude magnesite atparatively low temperatures, 700 to 1,000 o C, and retaining 2 to 7% CO 2 as carbonate) and dead-burnt or refractory magnesite (magnesia obtained by calcining magnesite at high temperatures, 1,500 to 1,800 o C, usually containing less than 0.5% CO 2).