The magnetic structure of α-hematite was the subject of considerable discussion and debate during the 1950s, as it appeared to be ferromagnetic with a Curie temperature of approximately 1,000 K (730 °C), but with an extremely small magnetic moment (0.002 Bohr magnetons).
Hematite and magnetite are both iron oxide minerals, but they have distinct differences in their physical properties and uses. Hematite is a dark, reddish-brown mineral with a metallic luster, while magnetite is a black, opaque mineral with a metallic sheen.
Magnetite reacts with oxygen to produce hematite, and the mineral pair forms a buffer that can control how oxidizing its environment is (the oxygen fugacity). This buffer is known as the hematite-magnetite or HM buffer.
Magnetite and hematite are both iron ores but have distinct characteristics. Magnetite, having the chemical formula Fe₃O₄, exhibits magnetic properties, whereas hematite, with a formula of Fe₂O₃, does not possess natural magnetism.
Hematite and magnetite are both iron ores that have significant industrial applications, but they differ in their chemical composition, physical properties, and uses. In this essential guide, we'll delve deep into the world of hematite vs magnetite.
Hematite and magnetite are both equally essential oxides of iron. However, there are a few differences between them. The important difference between hematite and magnetite is that the iron in hematite is in +3 oxidation state, whereas in magnetite it is in +2 and +3 oxidation states.
Hematite and magnetite are both iron oxides with distinct properties and uses. Magnetite has higher iron content and exhibits natural magnetism, while hematite only shows magnetism upon heating. Magnetite is black in color, while hematite can have a range of colors.