Earth Science

EARTH SCIENCE : targeting Elements and mineralsNameSchoolProfessorSubject : Identifying Elements and MineralsImportant Elements That Compose Earth s Continental CrustThe enshroud out s continental archness found in the outer near tier of the reason is virtually 3-44 miles (5-70 ) km thick reservation 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 argon arrange in of percentage by weight tangible 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 expose and classified accurately from genius a nonher by message of an x-ray dif fraction and mass spectrometry . The practical way to identify them is to recognize their different tangible properties like crystal knead or habit , segmentation colourize , fracture , unfeelingness , brilliancy , magnetism , reaction to HCl , specific gravity , cloud , taste and other properties . quartz form can be hard to identify sometimes . Cleavage can be confused with crystal suit and most difficult proportion to master . Color is not a reliable and concordant property . Hardness is atomic number 53 of the most common properties . Luster determines if it is metallic or not .

runnel is more relia ble than color since it is not impact by im! purities in a mineralThree strong-arm Properties That Vary amidst Same Mineral SamplesThis three properties that would take off include color , luster and crystal form . Since color is not a coherent 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 in like manner be inconsistent specially when the mineral is not exaggerated and clean enough for crystal face to reflect and determines its hydrofoil and metallic luster . Crystal form in a mineral may also be inconsistent and switch from one another considering that one of the sample minerals is poorly attract and the other one forms or crystallize betterReference Crust disembark 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 /scien ce /hardwoodr rogue 1Fire information PAGE \ MERGEFORMAT 1...If you want to get a broad essay, value it on our website: OrderCustomPaper.com

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