Earth Science

EARTH SCIENCE : targeting Elements and mineralsNameSchoolProfessorSubject : Identifying Elements and MineralsImportant Elements That Compose Earth s Continental CrustThe hold in out s continental archness found in the out close tier of the undercoat is round 3-44 miles (5-70 ) km thick do 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 , fight (5 .0 , calcium (3 .6 , sodium (2 .8 potassium (2 .6 ) and lastly magnesium (2 .1 . They argon arrange in of percentage by weight somatic 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 disclose and classified accurately from genius a nonher by means of an x-ray diffraction and mass spectrometry . The practical way to identify them is to recognize their different tangible properties like crystal relieve oneself or habit , segmentation colourize , fracture , insensibility , glimmer , magnetism , reaction to HCl , specific gravity , ladder , taste and other properties . quartz form can be hard to identify sometimes . Cleavage can be confused with crystal suit and most difficult home to master . Color is not a reliable and undifferentiated property . Hardness is atomic number 53 of the most common properties . Luster determines if it is metallic or not .

running play is more reliable than color since it is not impact by impurities in a ! mineralThree physical Properties That Vary amidst Same Mineral SamplesThis three properties that would take off include color , luster and crystal form . Since color is not a consonant property two samples of same minerals may put on different color because chemical composition or impurities inwardly it can affect the minerals . The luster property may too be inconsistent specially when the mineral is not blown-up 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 diversify from one another considering that one of the sample minerals is poorly amplification and the other one forms or crystallize betterReference Crust trim down 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 r ogue 1Fire knowledge PAGE \ MERGEFORMAT 1...If you want to get a broad essay, differentiate it on our website: OrderCustomPaper.com

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