Earth Science

EARTH SCIENCE : targeting Elements and mineralsNameSchoolProfessorSubject : Identifying Elements and MineralsImportant Elements That Compose Earth s Continental CrustThe inter out s continental archness found in the outer(prenominal) tier of the creation is close to 3-44 miles (5-70 ) km thick make up less than 1 of the earth s elements in the earth s impertinence which include oxygen (46 .6 , silicon (27 .7 , aluminum (8 .1 , put right (5 .0 , calcium (3 .6 , sodium (2 .8 potassium (2 .6 ) and lastly magnesium (2 .1 . They are arrange in of percentage by weight collective Properties that Provide Means to Identify Common MineralsThere are about 40 common minerals that do up more than 99 of the mass of the Earth s crust . Minerals can be fall upon and classified accurately from genius a nonher by pith of an x-ray diff raction and mass spectrometry . The practical way to identify them is to recognize their different tangible properties like crystal fashion model or habit , segmentation colourize , fracture , cruelty , glare , magnetism , reaction to HCl , specific gravity , banding , taste and other properties . quartz form can be hard to identify sometimes . Cleavage can be confused with crystal suit and some difficult belongings to master . Color is not a reliable and accordant property . Hardness is atomic number 53 of the most common properties . Luster determines if it is metallic or not .

chevron is more reliable than co lor since it is not impact by impurities in! a mineralThree material Properties That Vary amidst Same Mineral SamplesThis three properties that would take off include color , luster and crystal form . Since color is not a self-consistent property two samples of same minerals may put on different color because chemical composition or impurities at bottom it can affect the minerals . The luster property may withal be inconsistent specially when the mineral is not increase and clean enough for crystal face to reflect and determines its transparency and metallic luster . Crystal form in a mineral may also be inconsistent and castrate from one another considering that one of the sample minerals is poorly promote and the other one forms or crystallize betterReference Crust reduce of . Retrieved September 8 , 2008 fromhttp /www .enotes .com /earth-scienceHardwood , R , Mineral Physical Properties and Identification Lab . Retrieved September 08 , 2008 , from http /facweb .bhc .edu /academics /science /hardwoodr rogue 1Fire cognition PAGE \ MERGEFORMAT 1...If you want to get a broad essay, severalize it on our website: OrderCustomPaper.com

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