WebSteel-grey to black in crystals and massively crystalline ores, dull to bright "rust-red" in earthy, compact, fine-grained material. Originally named about 300-325 BCE by … http://www.northgames.biz/samle/Rock-Collecting/1004012730.html
Hva er to ekstra interessante fakta om Mineral Hematitt?
WebHematite is the principle ore of iron. Huge quantities are mined throughout the world for industrial production. It is the source for roughly 90 percent of all iron mined in the United … Hematite , also spelled as haematite, is a common iron oxide compound with the formula, Fe2O3 and is widely found in rocks and soils. Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe 2O 3. It has the same crystal structure as corundum (Al 2O 3) and … See more The name hematite is derived from the Greek word for blood αἷμα (haima), due to the red coloration found in some varieties of hematite. The color of hematite is often used as a pigment. The English name of the stone is derived … See more Hematite is present in the waste tailings of iron mines. A recently developed process, magnetation, uses magnets to glean waste hematite from old mine tailings in Minnesota's vast Mesabi Range iron district. Falu red is a pigment used in traditional Swedish … See more Hematite was once used as mourning jewelry. A 1923 reference describes "hematite is sometimes used as settings in mourning jewelry." Certain types of hematite- or iron-oxide-rich clay, especially Armenian bole, have been used in gilding. Hematite is also … See more • MineralData.org See more Hematite shows only a very feeble response to a magnetic field. Unlike magnetite, it is not noticeably attracted to an ordinary magnet. Hematite is an antiferromagnetic material … See more The spectral signature of hematite was seen on the planet Mars by the infrared spectrometer on the NASA Mars Global Surveyor and 2001 Mars Odyssey spacecraft in orbit … See more • Mill scale • Mineral redox buffer • Wüstite See more set cetkica
FAQ : Hva er hematitt
WebAventurinfeltspat er eit mineral, òg kalla solstein, og er ein varietet av feltspat (gjerne oligoklas) som inneheld små flak av hematitt (jernglans) som gjev eit eldliknande fargespel i raudleggule fargar. I Noreg er aventurinfeltspat kjent frå Bamble og Tvedestrand. Han vert nytta som smykkestein. WebOstrava, 5.3. 2010, klub Chlív http://www.northgames.biz/Science---Nature/Bergarter-og-mineraler/1004083673.html set cerchi