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1、GGGeochemicalprospecting—GyrotronComparedtotheenvironmentinwhichmineralGeochemicalprospectingdepositsformed,theoveralltargetsizeforexplo-Explorationformineraldepositsbychemicallyana-rationistsisgreatersincetheyarelookingnotjustlyzingsampledrock,soil,vegetation,andot
2、hernat-forthemineralizationbutalsoforassociatedmineralsuralmaterialsfortraceamountsoftheprincipalandandfeaturesthatcouldbeidentifiedasimportantac-associatedelements.Bynow,mostoftheeasilydis-companyingmineralization.Placerdepositsarethecoveredmineraldepositshavebeenfo
3、und,makingexceptiontotherule.Theyareconcentrationsofthesearchfornewdepositsevermorechallenging.chemicallyandmechanicallydurable,high-specific-Inspiteofthis,worldwidedemandsarerisingforgravitymineralsthatmaynotbeassociatedinmean-energy,metallic,andnonmetallicmineralre
4、sources.ingfulwayswiththesurroundinggeology.EveninSearchcontinuesinregionsofknownmineraliza-suchsettings,explorationistsmaybeabletopredicttionandinareaswheredepositsarecoveredbythepresenceofsuchdepositsbylookingatthere-sedimentorobscuredbyvegetationandice.Geo-gional
5、settingofstreamsediments,glacialdeposits,chemicaltechniqueshavebecomeanimportantpartandsoon.ofalmostallexplorationprograms.SeeMINERAL;Onceformed,bothsyngeneticandepigeneticde-PROSPECTING.positsmaybeaffectedbytectonicadjustments(suchTypesofmineraldeposits.Mineraldepo
6、sitsoccurasfaulting,uplift,tilting)andbyweatheringandero-intwobroadcategories:syngeneticandepigenetic.sionastheyareexposedatthesurface.Thus,explo-Syngeneticdepositsformatthesametimeandbyrationistsareforcedtorelynotonlyontheirknowl-thesameprocessesastherocksinwhichth
7、eyoccur.edgeofthegeologicsettingofdepositsbutalsoonTheyareanaturalproductofrockformation,andanhowmineralizationmaybeaffectedbysurfacepro-understandingofhowtherocksformiscrucialtocesses.Depositsmaybecoveredbysoilandvegeta-knowingwheretolookforimportantmineralcon-tion
8、orbyresidualweatheringproductsinregionscentrations.Epigeneticdepositsaresuperimposedwheresoilsarenotwelldeveloped.Thecovermayonrocksandmay
