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Home > Hematite


Hematite
General
Category Mineral
Chemical formula iron (III) oxide, Fe2O3
Identification
Colour Metallic grey to earthy red
Crystal habit Tabular to thick crystals
Crystal system Hexagonal (rhombohedral)
Cleavage None
Fracture Uneven to subconchoidal
Mohs Scale hardness 5.5 - 6.5
Luster Metallic to splendent
Refractive index Opaque
Pleochroism None
Streak Bright red to dark red
Specific gravity 4.9 - 5.3
Fusibility ?
Solubility ?
Major varieties
Specularite

Hematite ( AEAmerican English or US English (en-US according to RFC 3066) is the diverse form of the English language used mostly in the United States of America. It is the primary language used in the United States. According to the 1990 census, 97 percent of U.) or haematite ( BEBritish English (or UK English (en-GB according to RFC 3066) is a collective term for the forms of English spoken in the British Isles. In particular, when used by other English speakers, it often refers to the written Standard English and the pronunciati) is the mineral form of Iron (III) oxide, (Fe2O3), one of several ironThis article is about metallic iron. For the ironing device, see ironing manganese iron cobalt Fe Ru Full table General Name, Symbol, Number iron, Fe, 26 Chemical series transition metal Group, Period, Block 8 (VIIIB), 4 , d Density, Hardness 7874 kg/m3, oxideAn oxide is a chemical compound of oxygen with other chemical elements, e. rust ( iron oxide) or bauxite ( aluminium oxide). Oxides are extremely common in Earth's crust, and indeed in solid matter throughout the universe. Oxides are usually created throus. The oreAn ore is a mineral deposit containing a metal or other valuable resource in economically viable concentrations. Usually, it is used in the context of a mineral deposit from which it is economical to extract its metallic component. Ores are mined. Ore bod sometimes contains slight amounts of titaniumscandium titanium vanadium Ti Zr Full table General Name, Symbol, NumberTitanium, Ti, 22 Chemical series transition metals Group, Period, Block 4, 4 , d Density, Hardness 4507 kg/m3, 6 Appearance Silvery metallic Atomic properties Atomic weight 47. 867 am. When shaped into ornaments it is often called black diamond. Rouge is a powderized form of hematite.

A very common mineral, coloured black to gray, brown to reddish brown, or red. It is minedSilver City, New Mexico is an open-pit copper mine Mining is the extraction of valuable minerals or other geological materials from the earth, usually (but not always) from an ore body, vein or (coal) seam. Materials commonly recovered by mining include b as the main ore of iron.

Varieties are: Bloodstone, Iron Rose, Kidney Ore, Martite, Paint Ore, Specularite (Specular Hematite), Rainbow Hematite and Titano-hematite.

Deposits of grey hematite are typically found in places where there has been standing water or mineral hot springs, such as those in Yellowstone. The mineral can precipitate out of water and collect in layers at the bottom of a lake, spring, or other standing water. But hematite can also occur without water, as the result of volcanic activity.



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