chickengold92 Tribe Hero
Posts : 294 Join date : 2010-10-29
| Subject: Magnetite.. Sat Jan 08, 2011 4:41 am | |
| Magnetite is a ferrimagnetic mineral with chemical formula Fe3O4, one of several iron oxides and a member of the spinel group. The chemical IUPAC name is iron(II,III) oxide and the common chemical name is ferrous-ferric oxide. The formula for magnetite may also be written as FeO·Fe2O3, which is one part wüstite (FeO) and one part hematite (Fe2O3). This refers to the different oxidation states of the iron in one structure, not a solid solution. The Curie temperature of magnetite is 858 K (585 °C; 1,085 °F). It is black or brownish-black with a metallic luster, has a Mohs hardness of 5-6 and a black streak shipping insurancehome security companies | |
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tranthuongbn Tribe Initate
Posts : 18 Join date : 2010-12-30
| Subject: Re: Magnetite.. Sat Jan 08, 2011 6:20 am | |
| The rebellious tone and image of American rock and roll and blues musicians became popular with British youth in the late 1950s. While early commercial attempts to replicate American rock and roll failed, the trad jazz-inspired skiffle craze,[2] with its "do it yourself" attitude, was the starting point of several British acts that would later be part of the "invasion". Young British groups started to combine various British and American styles. This coalesced in Liverpool during 1962 in what became known as Merseybeat, hence the "beat boom".[3][4][5][6] In 1962 "Telstar", an instrumental by The Tornados became the first U.S. number 1 single by a British rock act.[7] Also that year the folk trio The Springfields featuring Dusty Springfield cracked the U.S. top 20.[8] Medical Marijuana Dispensarypainful heel | |
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