* Hematite (Fe₂O₃): This is the most common iron oxide mineral and is responsible for the reddish color of many iron ores.
* Magnetite (Fe₃O₄): This mineral is strongly magnetic and is often found in black or dark grey iron ores.
* Goethite (FeO(OH)): This mineral is a hydrated form of iron oxide and is typically yellowish-brown.
* Siderite (FeCO₃): This carbonate mineral is often found in sedimentary iron ores.
Therefore, it's not accurate to place iron ore in a specific mineral group, as it is a rock type consisting of various iron-bearing minerals.
