Physical and Chemical Properties of Iron Ore by haneen ...
A rock or mineral from which iron can be profitably extracted. Principals of Iron Ore. The principal of iron ores are hematite (Fe2O3) and magnetite (Fe3O4). hematite: reddish .
What Does Gold Ore Look Like? | Sciencing
Apr 25, 2017· The ways that gold collects in minerals will shape the look of gold ore. So if you are looking for big chunks of gold in gold ore, restrict your search to ore within lode deposits—these are the sites where tectonic activity brings gold into existence.