Earth Science

EARTH SCIENCE : targeting Elements and mineralsNameSchoolProfessorSubject : Identifying Elements and MineralsImportant Elements That Compose Earth s Continental CrustThe befog out s continental archness found in the outer well-nigh tier of the kingdom is rough 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 , beseech (5 .0 , calcium (3 .6 , sodium (2 .8 potassium (2 .6 ) and lastly magnesium (2 .1 . They ar arrange in of percentage by weight corporate 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 determine and classified accurately from genius a nonher by actor of an x-ray diffraction and mass spectrometry . The practical way to secernate them is to recognize their different tangible properties like crystal cause or habit , segmentation colourize , fracture , cruelness , light , magnetism , reaction to HCl , specific gravity , rivulet , taste and other properties . quartz form can be hard to identify sometimes . Cleavage can be confused with crystal suit and most difficult plaza to master . Color is not a reliable and agreeable property . Hardness is atomic number 53 of the most common properties . Luster determines if it is metallic or not .

ravel is more reliable than color since it is not impact by impurities in a mineralThr! ee 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 un take leaveing property two samples of same minerals may put on different color because chemical composition or impurities within it can affect the minerals . The luster property may likewise be inconsistent specially when the mineral is not overstated and clean enough for crystal face to reflect and determines its foil and metallic luster . Crystal form in a mineral may also be inconsistent and vary from one another considering that one of the sample minerals is poorly view and the other one forms or crystallize betterReference Crust wreak 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 accomplishmen t PAGE \ MERGEFORMAT 1...If you want to get a broad essay, direct it on our website: OrderCustomPaper.com

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