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1、MineralDepositModelsDENNISP.COXandDONALDA.SINGER,EditorsU.S.GEOLOGICALSURVEYBULLETIN1693U.S.DEPARTMENTOFTHEINTERIORMANUELLUJAN,JR.,SecretaryU.S.GEOLOGICALSURVEYDallasL.Peck,DirectorAnyuseoftrade,product,orfirmnamesinthispublicationisfordescriptivepurposesonlyanddoesnotimplyendorsementbytheU.S
2、.GovernmentFirstprinting1986Secondprinting1987Thirdprinting1992UNITEDSTATESGOVERNMENTPRINTINGOFFICE,WASHINGTON:1992ForsalebyBookandOpen-FileReportSalesU.S.GeologicalSurveyFederalCenter,Box25425Denver,CO80225LibraryofCongressCataloging-in-PublicationDataMineraldepositmodels(U.S.GeologicalSurve
3、yBulletin1693)Bibliography1.OreDeposits.2.Minesandmineralresources.1.Cox,DennisP,Il.Singer,DonaldA.Ill.Series.QE75.B9No.1693622S86-600250[TN263]622’.1]CONTENTSPreface,byPaulB.BartonIIIIntroduction,byDennisP.Cox,PaulB.Barton,andDonaldA.Singer1DepositmodelsDepositsrelatedtomaficandultramaficint
4、rusionsinstableenvironments1DescriptivemodelofStillwaterNi-Cu,byNormanJPage112aDescriptivemodelofBushveldCr,byNormanJPage132bDescriptivemodelofMerenskyReefPGE,byNormanJPage143DescriptivemodelofBushveldFe-Ti-V,byNormanJPage15Depositsrelatedtomafic-ultramaficrocksinunstableareas5aDescriptivemod
5、elofDuluthCu-Ni-PGE,byNormanJPage165bDescriptivemodelofNoril’skCu-Ni-PGE,byNormanJPage176aDescriptivemodelofkomatiiticNi-Cu,byNormanJPage18GradeandtonnagemodelofkomatiiticNi-Cu,byDonaldA.Singer,NormanJPage,andW.DavidMenzie186bDescriptivemodelofduniticNi-Cu,byNormanJPage24Gradeandtonnagemodelo
6、fduniticNi-Cu,byDonaldA.SingerandNormanJPage247aDescriptivemodelofsynorogenic-synvolcanicNi-Cu,byNormanJPage28Gradeandtonnagemodelofsynorogenic-synvolcanicNi-Cu,byDonaldA.Singer,NormanJPage,andW.DavidMenzie287bDescriptivemodelofanorthositeTi,byEricR.Force328aDescriptivemodelofpodiformchromite
7、,byJohnP.Albers34Gradeandtonnagemodelofminorpodiformchromite,byDonaldA.SingerandNormanJPage348bGradeandtonnagemodelofmajorpodiformchromite,byDonaldA.Singer,NormanJPage,andBruceR.Lipin388CDescriptivemodelofLimassolForestCo-Ni,byNormanJPage458d
