Hematite is a mineral, colored black to steel or silver-gray, brown to reddish brown, or red. It is mined as the main ore of iron. Varieties include kidney ore, martite (pseudomorphs after magnetite), iron rose and specularite (specular hematite). While the forms of hematite vary, they...
World production of this ore is more than 1 billion tons. Magnetite and taconite are two other primary iron oxide minerals used as iron ore.The name hematite comes from the blood-red color of powdered hematite. View all Uses ▼ 8. Toltal 128 Suppliers View more ...
Magnetite is an iron oxide with the chemical formula Fe3O4.Actually, it is a mixture of two iron oxides, FeO and Fe2O3. Therefore, we can show it as FeO·Fe2O3. According to the IUPAC nomenclature, its name is iron (II, III) oxide. But, commonly we name this as ferrous-ferric...
(Manasse, 1910). Some years later it was also found associated withiron oxidesat the Cape Calamita mine of the same island (Garavelli, 1955a) and most recently it was described in pegmatite fractures, associated withhematite, magnetite andgoethite, in Minas Gerais, Brazil (Matioli et al.,...
Iron (III) oxide exists in mineral form as hematite.It is 70% iron and is the primary source of iron ore in the world. About 90% of the iron mined in the United States is hematite. World production of this ore is more than 1 billion tons. Magnetite and taconite are two other prima...
Hematite has a thermal conductivity of 12.5 Wm-1K-1, which is exceptionally high, more than double the conductivity of magnetite and 3-4 times higher than for common fillers like barium sulfate and calcium carbonate (calcite). Magnetism Hematite is attracted to a magnet, although much less ...
I believe that is more likely another iron oxide, magnetite. The "not really a true mineral" known as Limonite is a mixture of hematite, Goethite, and possibly other similar hydrated oxides and hydroxides. Hematite is a primary component of ordinary rust, but the porousity, softness, and ...
Venkateswaran and K. Kishore, Radiation effects on the dissolution kinetics of magnetite and hematite in EDTA- and NTA-based dilute chemical decontamination formula- tions, Radiat. Phys. Chem., 2005, 72, 475-482.Keny, S.J., et al., Radiation effects on the dissolution kinetics of magnetite...
(Minerals) a red, grey, or black mineral, found as massive beds and in veins and igneous rocks. It is the chief source of iron. Composition: iron (ferric) oxide. Formula: Fe2O3. Crystal structure: hexagonal (rhombohedral). Also called:iron glance ...
RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook specular hematite [′spek·yə·lər ′hē·mə‚tīt] (mineralogy) A variety of hematite with a blue-gray color and bright metallic luster. McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, ...