EXPLORE - Association of Applied Geochemists · say that it has been an active and fruitful one. We...

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New base metal mineral potential in southern Northwest Territories, CanadaRoger C. Paulen1, Stephen J.A. Day1, Robert D. King2, Stephen J. Piercey2 and I. Rod Smith3 1 Natural Resources Canada, Geological Survey of Canada, 601 Booth Street, Ottawa, ON, Canada K1A 0E8.2 Memorial University of Newfoundland, Department of Earth Sciences, 9 Arctic Avenue, St. John’s, NL, Canada A1B 3X5.3 Natural Resources Canada, Geological Survey of Canada, 3303 33 St NW, Calgary, AB, Canada T2L 2A7.

NUMBER 181 DECEMBER 2018

Newsletter for theAssociation of Applied Geochemists

www.appliedgeochemists.orgEXPLORE

INTRODUCTION Theuseofindicatormineralsformineralexplorationinglaciatedterrainhasevolvedtoapointwheremanydifferentsuitesofindicatorminerals,indicativeofspecificdepositstypes,arenowbeingused(cf.,Averill2001;Lehtonenetal.2015;McClenaghan&Paulen2018,andreferencestherein).Thesemethodsareparticularlysuitedforreconnaissancesurveyswhereheavyandmid-densityindicatormineralscollectedfromstreamsedimentsand/ortillallowabroadregiontobeassessedforthepresenceofpotentialmineraldeposits.AspartoftheGeologicalSurveyofCanada’s(GSC)Geo-mappingforEnergyandMinerals(GEM-2)Program(2013-2020),theSouthernMackenzieSurficialactivity(2017-2020)collectedstreamsedimentsandtillsamplesacrossa35,000km2 region and examined their heavy mineral content. This researchactivityisbeingconductedinaregionwithnopriorsurficialmappingandverylimitedsurficialsamplingforheavymineralsbyComincoLimitedintheearly1980s(mostlyindustry-confidentialdata;cf.,Brabec1976,1983;Lane1980).Despitehostingthepast-producingworld-classMississippiValley-type(MVT)PinePointPb-Zndistrict,almostnoothermineralshowingshavebeenreportedinthisextensiveregion,despitesignificantinterpretedpotentialforadditionalmin-eralresources,andextensivereportsofPb-Znmineralizationatdepth(Hannigan2006a).Inthistechnicalarticle,wepro-vide new results which illustrate the potential for new, undiscovered targets in the region, and further highlight how heavy mineralassemblagesandgeochemicalandisotopiccompositionsarepowerfultoolsforexplorationinglaciatedregions(Paulenet al.2017,2018;Dayet al.2018a;Kinget al.2018).

Location and Physiography Surficialmapping,targetedsurficialgeologystudies,andstreamsedimentandtillsamplingforgeochemistryandheavymineralindicatorswereinitiatedin2017inthesouthernNorthwestTerritories(NWT)ofnorthernCanada(Fig.1).Sampleswerecollectedbetween114°Wto124°Wlongitude,eastoftheLiardRiver,andfrom60°NalongtheNorthwestTerritories–Albertaprovincialborderto62°Nlatitude.SurficialmappingwasfocussedwithinNationalTopographicMapsheets(NTS)85-C,F,andG.

Figure 1. Study area for surficial mapping and heavy mineral studies, southwest Northwest Ter-ritories, Canada. The study area is contained within the WCSB, underlain by Paleozoic carbon-ate (white) and Cretaceous (pale green) bedrock, west of the Canadian Shield and east of the Cordilleran deformation. Arrows indicate direction of regional ice flow of the Laurentide Ice Sheet that impacted the area; ice-flow vectors from Prest et al. (1968); Kerr (2006); Bednarski (2008), Huntley et al. (2008), and ice-flow history at Pine Point from Oviatt et al. (2015), arrow sizes indi-cate relative erosional vigour, and numbers indicate relative ice-flow chronology.

ThedistrictliesintheGreatSlavePlainandAlbertaPlateauphysiographic regions of the WesternInteriorPlains(Bostock1970)andisrelativelyflat,otherthantheCameronHillsuplandarea along the southern part of the study area. The vegetation istypicalofthenorthernBorealforestofCanada;blacksprucebogsandopenfensinthepoorly-drained lowlands with poplarandjackpineforestsinuplandregionsthathavebetterdrainage.

Bedrock and Surficial Geology This study area is situ-atedintheWesternCanadaSedimentaryBasin(WCSB),which consists of a wedge of PhanerozoicsedimentaryrocksthatoverlapthePrecambrian

NUMBER 181 EXPLORE

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Notes from the Editor

TABLE OF CONTENTSNewbasemetalmineralpotentialinsouthern NorthwestTerritories,Canada ....................................................... 1NotesfromtheEditor......................................................................... 3President’sMessage ......................................................................... 429thInternationalIAGSSymposium ................................................. 18AAGNewMembers ........................................................................... 19DMGExplorationGeochemistryCourse ........................................... 21CalendarofEvents ............................................................................ 22RecentlyPublishedinElements ........................................................ 23

ADVERTISERSActivationLaboratoriesLtd. ............................................................... 14ALSMinerals ..................................................................................... 9BarringerBook................................................................................... 20BrunoLemière ................................................................................... 4BureauVeritasMinerals. ................................................................... 8KlenInternational............................................................................... 6Olympus ............................................................................................ 7OREASCertifiedReferenceMaterials .............................................. 2OverburdenDrillingManagement...................................................... 10

Editor: BethMcClenaghan([email protected])

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EXPLORE is published quarterly by theAssociation ofAppliedGeochemists, P.O.Box26099,72RobertsonRoad,Ottawa,ONCanadaK2H9RO.EXPLOREisatrademarkoftheAssociationofAppliedGeochemists.Type and layout of EXPLORE:VivianHeggie,HeggieEnterprises,Thornton,CO(303)288-6540;[email protected]

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Deadlinesforsubmissionofarticlesoradvertisements: Marchnewsletter:January15 Junenewsletter:April15 Septembernewsletter:July15 Decembernewsletter:October15Information for Contributors Manuscriptsshouldbedouble-spacedandsubmittedindigitalformatusingMicrosoft®WORD.DoNOTembedfiguresor tables in the textdocument.Eachphotoand/orfigure(colourorblackandwhite)shouldbesubmittedasseparatehighresolutiontiff, jpegorPDF(2400dpiresolutionorbetter)file.EachtableshouldbesubmittedasseparatedigitalfileinMicrosoft®EXCELformat.Allscientific/technicalarticleswillbereviewed.Allcontributionsmaybeeditedforclarityorbrevity. Formats for headings, abbreviations, scientific notations, references andfigures must follow the Guide to Authors for Geochemistry: Exploration, Environment,Analysis(GEEA)thatarepostedontheGEEAwebsiteat:http://www.geolsoc.org.uk/template.cfm?name=geea_instructions_for_authors Inadditiontothetechnicalarticle,authorsareaskedtosubmitaseparate250wordabstractthatsummarizesthecontentoftheirarticle.ThisabstractwillbepublishedinthejournalELEMENTSonthe‘AAGNews’page.

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NewsletterNo.181 December2018

EXPLORE

WelcometothefourthandfinalEXPLORE issue of 2018.IssueNo.181includesonetechnicalarticlethatdescribestheidentificationofnewbasemetalmineralpotentialinnorthernCanadausingindicatormineralsinstreamsedimentsandglacialtill.ItwaswrittenbyRogerPaulen,SteveDay,RobertKing,StevePiercey,andRodSmith. EXPLOREthanksallthosewhocontributedtothewriting and/or editing of this issue as well as all other is-suesin2018,listedinalphabeticalorder:SteveAdcock,SteveAmor,DennisArne,AlArsenault,GlennBark,GrahamCloss,DavidCohen,SteveCook,OleChristian-sen,SteveDay,ColinDunn,RéginaldFettweis,TravisFerbey,MikeGadd,BobGarrett,JohnGravel,NikitaLaCruz,JoshuaHughes,DavidHuntley,RobertKing,OwenLavin,ChrisLawley,DavidLeng,RobMackie,RickMc-Caffrey,PaulMorris,DavidMurphy,MikeParkhill,RogerPaulen,StevePiercey,MadhuRaghav,DenisSchlatter,KaterinaSchlöglova,DaveSmith,RodSmith,WendySpirito,PimvanGeffen,GrahamWilson,ScottWood,andPeterWinterburn. Inthislastissueof2018,EXPLORE gratefully ac-knowledgesouradvertizersfortheircontinuingfinancialsupport.Belowistheteamthathasprovidedreaderswithfourexcellentissuesthisyear.WewishallAAGmembersand other readers of EXPLORE a successful year in2019. BethMcClenaghan,EditorPimvanGeffen,BusinessManagerSteveAmor,CalendarofEventsAlArsenault,NewMemberslistandotherAAGbusiness officenewsSteveCook,President’sLetter

continued on page 4

NUMBER 181 EXPLORE

President's Message

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AsIwritethis,myfinalPresident’smessageof2018,andreflectuponthepastyear,I’mpleasedtosaythatithasbeenanactiveandfruitfulone.Weheldasuccessful28thIAGS(InternationalAppliedGeochemistrySymposium)inVancouveraspartofthewiderResourcesforFutureGenerations(RFG2018)conference,andawardedgoldandsilvermedalsoftheAssociationtothreeesteemedcolleaguesatourgaladinnerattheVancouverAquarium.PlanningisalsowellunderwayforthenextSymposiumtobeheldinViñadelMar,Chilein2020.WehaveanewEditor-inChief,Dr.ScottWood,forourjournalGeochemistry:Exploration,Environment,Analysis(GEEA),andourAssociationisonasolidfinancialfooting.Bothourwebsiteandournewsletter, EXPLORE,provideAAGinformationandtechnicalarticlestogeochemistsandothergeoscientistsatahighstandardofcontentandpresentation.Finally,theincoming2019-2020AAGCouncilorshavebeendetermined,andtheAustralianGeoscienceCouncilConventioninAdelaideSA,forwhichAAGwasaco-sponsor,haswrappedup. Forallthis,wecanthankourCouncil,ourcoordinatorsandcommitteechairs,themembersoftheIAGSLOC,andindeedallofthemembersoftheAAGfortheirsolidsupportoftheirtimeandenergiesoverthecourseofthisandpreviousyears.Asthecalendarpreparestoturnto2019,itisnowtimetothinkstrategicallyofthefuturedirectionoftheAssocia-tion,andhowtopositionitforcontinuingsuccessandgrowthinthecomingyears.Inanearliermessage,IstatedthattwoofmyobjectivesasPresidentweretoincreaseourmembershipandtoexpandourlevelofeducationalresearchsupportforthenextgenerationofgeochemists.Thesuccessofthetwowillbecloselyrelated.ThemembershipoftheAAGcur-rentlystandsat396,comprising131Fellows,246RegularMembers,18Studentsand1subsidizedmember.Thismem-bershipincludes26newmembers(17RegularMembersand9students),althoughourtotalmembershipisdownslightlyfrom403membersin2017.Overthecomingmonths,wewillbedevisingandimplementingactionplanstoincreaseourmembership,transitioneligiblecurrentMemberstoFellowsand,veryimportantly,increaseourlevelsofstudentsponsor-shipandeducationalsupport.Inthelattercase,thiswillenableustobothfurthergeochemicalresearchandhelpdevelopthenextgenerationofgeochemicalleaders.Anexampleforyourattentionisourco-sponsorshipoftheupcomingPAC-RIM(MineralSystemsofthePacificRim)conferenceinNewZealandinApril2019,wherewewillbesupportingtravelofuptothreeAAGmemberstoAucklandtopresentresearchresultsandshortcoursesonappliedgeochemistry. Finally,althoughourgazehereisforward,IdonotwishtoneglecttherichhistoryoftheAssociationandtheevolu-tionofexplorationgeochemistrybythegiantsofourdiscipline.First,IremindallourreadersthatGoldandSilverMedalnominationsfor2018areopen,andIencourageyoutosubmitnominationsofdeservingindividualsforconsideration.TheGoldMedalisawardedforoutstandingscientificcontributionsandachievementinappliedgeochemistry,whereastheSilverMedalisawardedinrecognitionofdedicatedservicetotheAssociation.Secondly,aswerapidlyapproachthe50thanniversaryoftheAAG’sfoundingin1970,anupdatedshorthistoryoftheAssociationwouldbeafittingfoundationfromwhichtolaunchournext50yearsofgeochemicalresearchandexploration.IcallonanyFellowsandMemberswhomightbeinterestedincontributingtheirtimeandenergy,aswellasstories,anecdotesandphotographs,tocontactmedirectly.

Stephen Cook, AAG President

DennisArne,ElementscontentDaveSmith,AGMMinutes,CouncilElections,andother AAGbusinessDavidLeng,editingassistanceMadhuRaghav,editingassistanceRayLett,EXPLOREmailinglistVivianHeggie,pagelayoutandmailingTomMeuzelaar,liaisonwithAAGwebsite

Beth McClenaghan, Editor

Notes from the Editor… continued from page 3


New base metal mineral potential… continued from page 1

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cratonandthickenwestwardtowardsthedeformedbeltoftheCordillera(Fig.1;Porteretal.1982;Okulitch2006).ThePrecambriancrystallinebasementrocksareoverlainbyLowerandMiddleDevoniansedimentaryrocks,primarilyplatformcarbonateswhichcontainthePresqu’iledolomitizedcomplexthathoststothePinePointMVTdistrict(Rhodesetal.1984;MeijerDrees1993).TwosignificantsedimentarysuccessionsconstitutethefilloftheWCSB.Theolderanddeepersuc-cessionconsistsdominantlyofPaleozoicmarinecarbonateswhichwerelaterburiedbyshallowmarineandnonmarineclasticsedimentsofMesozoicage(Douglas1959;Richards1989). BothsedimentarysuccessionshavebeenaffectedbycratonicarchingandfaultingintheunderlyingcrystallinePro-terozoicbasement.InsouthernNorthwestTerritoriesthisfaultingismostprominentlydisplayedbythenortheast-south-westtrendingGreatSlaveLakeShearZoneandothersubparallelfaults(Eaton&Hope2003).UpperDevonianrocksarecomposedofthickshale(upto1.5km),whicharelocallypyriticandbituminous,andareinterbeddedwithreefalcarbon-atebeds.Shallow-dippingCretaceoussandstone,siltstoneandshaledominatethesouthernpartofthestudyareaandconsistofupperandlowerCretaceousunitsthatunconformablyoverlyPaleozoicstrata(Dixon1999).In1998,kimberliteswerediscoverednearFortSimpson,hostedinUpperDevonianbedrock(Pitman2014). ThestudyareawasinundatedbytheLaurentideIceSheet(LIS)duringthelateWisconsinglaciation(~24-1014CkaBP;Dyke&Prest1987;Dyke2004).Predominantglaciallystreamlinedlandforms(flutingsanddrumlins)indicateasouth-westiceflowacrossthestudyarea.AtPinePoint,70kmeastofHayRivertownsite,bedrockstriae(Oviattet al.2015)andclastfabricmeasurements(Riceet al.2013)recordatleast3iceflowtrajectories:earliesttothesouthwest(230°),intermediarytothenorthwest(300°),andafinalwest-southwest(250°)flow(Fig.1).WestofHayRiver,LISflowwasin-fluencedbytherisingtopographyoftheCordilleraandwasdeflectedsouth-southwestwardacrosstheCameronHillsandTroutLakeuplands,andnorthwarddowntheLiardandMackenzierivervalleys(Bednarski2008). Duringdeglaciation,retreatingicebecameincreasinglytopographicallyconfinedandprominentlobesextendedsouthandwestdowntheHayandMackenzierivervalleys,respectively.Iceretreatedfromthestudyareabetween11-1014CkaBP(Dyke2004).BlockageofregionaldrainageandimpoundmentwithinglacioisostaticallydepressedbasinsledtotheformationofglacialLakeMcConnellalongtheretreatingicemargin(Lemmenetal.1994).After8.514CkaBP,glacialLakeMcConnellcontinuedtodrainlargelythroughaprocessofdecantationbyglacioisostaticuplift(Lemmenetal.1994;Smith1994).Thestudyareaisblanketedbythicktilldeposits(>20mthick;Smith&Lesk-Winfield2010),withlocalthicknessesinfillingkarstcollapsestructuresexceeding100m.TherimoftheDevonianplatformcarbonatesparallelingthesouthwestshoreofGreatSlaveLakearetheonlyexposedbedrockatsurface.WhereareasweresubmergedbyglacialLakeMc-Connell,anoftenprominent,thin(<50cm)winnowedtillandcobble-boulderlagisfound.Accumulationsofglaciolacus-trinesedimentsaregenerallythin,withthickestdepositsfoundaroundthewesternandsouthernshoresofGreatSlaveLake.Themodernsurfaceiscoveredbyexpansivepeatbogsandfens,underlainbydiscontinuouspermafrostdisplayingwidespreadactivethermokarst(Paulenet al.2017).

Rationale and Background The impetus to conduct heavy mineral studies in thesouthernNWTwastheidentifiedbasemetalmineralpotentialreportedbyHannigan(2006a),aswellasposi-tive results from several adjacent heavy mineral surveys conductedinregionsunderlainbyPaleozoicandCreta-ceousbedrock,forwhichtherewasnoknownsurfacebedrockmineralization(Plouffeet al.2006;McCurdyet al.2007),andtherecentdiscoveryofkimberlitesandabundantkimberliteindicatorminerals(Dayet al.,2007;Pitman,2014). ResearchconductedduringtheGSC’sTargetedGeoscienceInitiative(TGI)projectinvestigatingthepotentialforMVTmineralizationinnorthernAlbertaandtheGreatSlavePlainofsouthernNorthwestTerritories(Hannigan2006a)producedamineralprospectivitymapshowingMVTmineralizationpotentialinthecarbon-ateplatformofthesouthwestGreatSlaveLakeregionaroundandwestofthePinePointminingdistrict(Fig.2;Hannigan2006b).Concurrently,atwo-yearreconnais-sance stream and glacial sediment sampling project, fundedbyGeoscienceBCandtheGSCinnortheastBritishColumbiadocumentedelevatedvaluesofPbandZnintillandstreamsedimentsamples(McCurdyet al.2007)about400kmwest-southwestofPinePoint.

Figure 2. Mineral prospectivity map of the southern Northwest Ter-ritories, with ratings for the potential to host MVT mineralization (from Hannigan 2006b, p. 339).

NUMBER 181 EXPLORE

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New base metal mineral potential…… continued from page 5

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TheGSC,undertheNorthernResourceDevelopmentProgram(2003-2007),andtheAlbertaGeologicalSurvey,alsofundedasurficialmappingandreconnaissancetillsamplingprograminnorthwestAlbertathatledtodiscoveryofasignificantsphaleritedispersaltrainintheZamaLakelowlands,300kmsouthwestofPinePoint(Fig.3;Plouffeet al.2006;Paulenet al.2011).Historically,theCretaceoussedimentaryrocksoftheWCSBrenownedfortheirhydrocarbonresources,inwhichthesetwoin-dependentstudiesdocumentedelevatedPbandZnconcentrations,haveseldombeenconsideredtohavepotentialtohostbasemetalmineraliza-tion(MacQueen1997). BasedfurtheronthereconnaissancestudyresultsinneighbouringBritishColumbiaandAlberta,astreamsedimentandtillheavymineralsamplingprogramwasincludedintheProtectedAreaStrategy(PAS)studiesintheSambaaK’e(TroutLake;Watson2011a)andKa’a’geeTu(KakisaLake;Watson2011b)regions.ResultsfromthesePASsurveysidentifiedsignificantelevatedabundancesofsphalerite,galena,andchal-copyriteintillsamplesoverlyingPaleozoiccarbonateandCretaceoussedimentaryrocks(Fig.4).

Figure 3. Number of sphalerite grains in the 0.25-0.5 mm heavy mineral fraction (normalised to a 30 kg till sample mass) recovered from till samples in northwest Alberta and the delimitated dispersal train (bounded by the thick black dashed lines) plotted on hillshade digital elevation model from Shuttle Radar Terrain Model (SRTM) of northwest Alberta (modified from Plouffe et al. 2008). Small white circles represent a single grain; small solid black circles indicate samples with no sphalerite. The highlighted light gray zone marks the approximate location of the Great Slave Lake shear zone (GSLSZ; Eaton and Hope 2003) projected to surface (modified from Paulen et al. 2011).


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Figure 4. Number of chalcopyrite grains in the 0.25-2.0 mm heavy mineral fraction (normalised to 25 kg of <2 mm table feed weight) recovered from till samples in the Trout Lake (left) and Kakisa Lake (right) PAS surveys (Watson 2011a, b). General glacial ice flow direc-tion here was from northeast to southwest. Classification intervals were arbitrarily assigned to the control variation in the number of grains per sample. Bedrock geology modified from Douglas (1974) and Okulitch (2006).

Drift prospecting research conducted around deposits withinthePinePointdistrictundertheGSC’sGEM-1Program(2008-2013)demonstratedthatindicatormineralsmethodsappliedtotillandstreamsedimentsareeffectivetoolsforMVTexploration. The main indicator minerals, galena and sphal-erite,surviveglacialandfluvialtransportandpost-glacialweatheringinthiscarbonateterrain(Oviattet al.2013,2015;McClenaghanet al.2018).Anotherimportantobservationfromtheir research was that chalcopyrite was not recovered in till or streamsimmediatelydowniceoffromthePb-Zndeposits.

METHODSPAS indicator mineral analysis UnderthepreviousPASsurveys(Watson2011a,b,2013),numeroussand-sized(0.25–2.0mm)grainsofsphalerite,ga-lena, chalcopyrite, and arsenopyrite were recovered from sedi-ments.ThesemineralgrainsweredonatedbytheNorthwestTerritoriesGeologicalSurvey(NTGS)totheGSCforinclusioninthisstudy.Note,indicatormineralresultsdiscussedforthePAStillsampleshavebeennormalisedtoa25kgtablefeedweight.InthepreviousPASstudy,sphalerite,whichrangesincolourfromredtoorangetoblack,wasrecoveredin57



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sampleswiththehighestcountpersamplebeing334grains.Chalcopyritegrains(n≤31)werepickedfrom135samples(Fig.4).Severalofthetillsamplescontainingsphaleritealsocontainedgalenaandarsenopyritegrains,completeresultsofwhicharereportedinKingetal.(2018). Inthisstudy,thedonatedsphalerite,galena,chalcopyrite,andarsenopyritegrainsweremountedin25mmcircularepoxymountsandcarboncoated.Imagingandsemi-quantitativemineralcompositionsweredeterminedusingscanningelectronmicroscopy(SEM)andenergydispersivespectrometry(EDS).ThesegrainswerethenfurtheranalyzedforPbandS(δ34S)isotopesusingsecondaryionmassspectrometry(SIMS).DetailsofSEMandSIMSworkforareoutlinedinKinget al.(2018).

GEM-2 stream sediment survey StreamsedimentsamplescollectedaspartofthisactivityfollowedtheGSC’sformerNationalGeochemicalRecon-naissance(NGR)programme’sprotocolsforsamplecollectionandanalysis,inordertoensureconsistentandreliablere-sults,regardlessofthearea,dateofthesurvey,ortheanalyticallaboratoryused(Friske&Hornbrook1991).Bulkstreamsediment,siltsediment,andwatersampleswerecollectedfrom31sitesin2017and8sitesin2018(Dayetal.2018b).Ateachstreamsamplesite,anon-site(0.45μm)filteredwatersample,agrabsampleofsilt-sizedsediment,andawet-sieved(<2mm)bulksedimentsamplewerecollected.Thewet-sievedbulksedimentsampleswereprocessedtoobtaintheHMCfraction,fromwhichindicatorminerals,includingsphaleriteandgalena,werecounted,andrepresentativegrainspicked.Indicatormineralgrainsofinterestwillbeanalysedtoobtaintheirchemistryandisotopiccompositionwhichwillassistindeterminingbedrocksourceandmineralpotential.

GEM-2 till heavy mineral survey Samplesoftillwerecollectedthroughoutthestudyareaatanapproximate10-15kmspacingforNTSsheets85C,85Fand85G.Additionally,sampleswerecollectedalongtwotransectsfromeast(up-ice)ofPinePointtotheLiardRiver,totestforpotentiallong-distancetransportofMVTindicatormineralsfromPinePoint.Tillsampleswerecollectedfrom137sitesin2017and54sitesin2018(Paulenet al.2018). Samplesiteswerelocatedopportunisticallyalongthefewhighwayandtrailsthatbisectthestudyarea,butwerelargelyconductedbyhelicopter,wherelandingareaswerefoundoftenwithgreatdifficultyinformerforestburnsites,oralongthemarginsofbogs,fensandlakes.TillsamplecollectionandqualitycontrolguidelinesfollowedestablishedGSC

NUMBER 181 EXPLORE

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tillsamplingandanalyticalprotocols(Spiritoet al.2011;McClenaghanet al.2013;Plouffe et al.2013).Abulksampleoftill(~25kg)wascollectedforheavymineralconcentrate(HMC)processingusingthemethodologyoutlinedbyMcClenaghan(2011)andsimilartothatusedforthestreamsedimentsamples.

PRELIMINARY RESULTS AND INTERPRETATIONSPAS indicator mineral analysis SulphurandPbisotopedataandinterpretationsofthePASsurveygalenagrainsintillsamplesarepresentedinKinget al.(2018).Insummary,thegalenagrainshave206Pb/204Pbratiosrangingfrom18.00to18.20and207Pb/204Pbratiosrangingfrom15.58to15.71.Theseclusterproximaltotheshalecurve,acrustalPbisotopecurvethatisrepresentativeoflocalbasementinwesternCanada(i.e.,westernLaurentiancontinentalcrust;Fig.5;GodwinandSinclair1982;Cum-ming et al.1990).SuchPbratiosareindicativeofanevolveduppercrustalsource;however,theyhaveamoreradiogenicPbsignaturethanPinePointdistrictsamples,suggestingthatthefluidsresponsiblefortheformationofthePASgalenagrainstappedseparate,older,moreradiogenicPbsources(e.g.,Zartman&Haines1988;Cumming et al. 1990;Kramers&Tolstikhin1997).

Figure 5. Lead isotopic bivariate plot of 206Pb/204Pb versus 207Pb/204Pb for galena grains from the Trout Lake (dark blue triangles) and Kakisa Lake (light blue triangles) regions inside yellow polygon (from King et al. 2018). Shown for comparison are bedrock samples

from Pine Point (pink diamonds; Cumming et al. 1990; Paradis et al. 2006; Oviatt et al. 2015). Data are plotted about the shale curve of Godwin and Sinclair (1982). Additional data from other Mississippi Valley-type (MVT) deposits in northern British Columbia and sedimen-tary exhalative (SEDEX) Pb-Zn deposits in Yukon and values from the Western Canada Sedimentary Basin (Godwin et al. 1988; Paradis et al. 2006) are also included.

Secondaryionmassspectrometry(SIMS)δ34Svaluesforgalenarangefrom+0.63to+26.87‰,likethevaluesfoundinpreviousstudiesatPinePoint,indicatinggalenagrainshaveasimilarsulphursourcetoPinePoint(Kyle1981;Oviattet al. 2015).Chalcopyritehasδ34Svaluesrangingfrom-20.64to+28.33‰andarsenopyritehasδ34Svaluesrangingfrom-2to+2‰.Theδ34Svaluesfoundinchalcopyritearesimilarto




sediment-hostedCudepositsandchalcopyritefrommagmatichydrothermalManto-typedeposits,suggestingpotentialforeitherdeposittypeintheregion(e.g.,Ripley&Ohmoto1977;ElDesoukyet al.2010).Arsenopyriteδ34Shavevaluessimilartoigneousrocks(e.g.δ34S=0±3‰;Ohmoto&Rye1979;Ohmoto&Goldhaber1997),whichcouldindicatethatsulphurinarsenopyritegrainswasderivedfromigneousbasementrocks.Additionally,orogenicgolddepositsnearYel-lowknifecontainarsenopyritethathaveδ34SvaluessimilartothoseinthePASsamples,suggestingthatthearsenopyritegrainsfromthestudyareamaybesourcedfromorogenicAusystemshostedintheCanadianShield,well(>250km)up-iceoftheregion(Wanlesset al. 1960;Mariniet al.2011).

Figure 6. Histogram of δ34S values of PAS survey chalcopyrite (blue; King et al. 2018) compared with values from Manto-style min-eralization in Peru (red; Ripley and Ohmoto 1977), the Tom sedimentary exhalative (SEDEX) deposit in the Yukon Territory (yellow; Gardner and Hutcheon, 1985), the Blende carbonate-hosted Pb-Zn deposit, Yukon Territory (grey; Robinson and Godwin 1995), and sediment-hosted Cu deposits in Africa (orange; El Desouky et al. 2010).

GEM-2 stream sediment survey Resultsfor31samplescollectedin2017werepublishedinDayet al.(2018a).InordertocounterpotentialsamplebiasduetothehydrodynamicforcesactivewithinaflowingstreamandvariabilityofHMCcontentofstreamsedimentswithinandbetweensites(cf.,Prioret al.2009),theindicatormineralcountsforstreamsedimentswerenormalisedtotheweightoftheheavymineralfractionratherthantheweightofthetotalsample(<2mmtablefeed).Mineralgrainplotspre-sentedherearevaluesnormalisedtotheweightoftheheavymineralfraction,plottedonabedrockbasemap(Okulitch2006);legendforthebedrockbaseisprovidedinFigure7. Thehighestgraincountsforsphalerite((Zn,Fe)S)plusgalena(PbS)reportedinstreamsediments(Dayet al.2018a)isasiteontheBuffaloRiver,approximately20kmdown-ice(west)oftheclosestknownsubcropofmineralizationinthePinePointminingdistrict(Kyle1981;S.Clemmerpers.comm.,July2018).Thissamplecontainsoneofthehighestnum-berofgrainseverreportedforaGSCNGRregionalheavymineralsurveyinnorthernCanadawithmorethan6000grainsofsphaleriteand40grainsofgalena(Fig.8a).LargenumbersofsphaleritegrainswerealsorecoveredfromstreamsitesalongNE-SWstructuraltrendsparallelto,andbetween,theTroutLakeFaultZoneandTathlinaFaultZone,>200kmwestofthePinePointdistrict.Elevatedcountsofgalena(60grains)werealsoobtainedontheHayandKakisarivers,~75and150km,respectively,down-icefromthePinePointdistrict(Fig.8b). Chalcopyrite(CuFeS2)abundanceinstreamsediments(Fig.9a)showsanarcuate200kmtrendofelevatedvaluesfromtheHayRivertotheMackenzieRiver.Scheelite(CaWO4)isamineralwhichwasnotbeexpectedtobepresentinstreamsedimentHMCsbecauseoftheunderlyingbedrockgeology.Scheeliteisphysicallyrobustandknowntosurvive

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Figure 8. Number of (A) sphalerite grains and (B) galena grains in the 0.25-0.5 mm heavy mineral fraction (normalised to a 50 g heavy mineral fraction weight) recovered from stream sediment samples in the 2017 GSC GEM stream sediment survey (Day et al. 2018a). The large black rectangle is the Pine Point mining district containing >100 Pb-Zn ore bodies distributed over 1600 km2 (Hannigan 2006b). See Figure 7 for bedrock legend.

Figure 7. Legend for bedrock geology of the Western Canada Sedimentary Basin between the Canadian Shield and Cordillera used in Figures 8 and 9. Note that the bedrock geology is shown projected under the lakes (after Douglas 1974 and Okulitch 2006). Major fault systems and mineral occurrences are also noted.



glacialandstreamtransport(e.g.,McClenaghanet al.2017).ScheelitegraincountsarehighestalongatrendparalleltotheRabbitLakeFaultZoneimmediatelywestofKakisaLake(Fig.9b).

GEM-2 till heavy mineral survey Indicatormineralcountshaveyettobepublishedforthe191tillsamplescollectedinthestudyarea.However,chal-copyriteoccursinmorethan90%ofthetillsampleswestofHayRiverandeastoftheTroutLakePASsurvey,andthereareadditionalsiteswithelevatedsphaleriteandgalenagrainsmorethan150kmwestofPinePoint.Publicationofresultsfromthe2017surveyareanticipatedinearly2019.

DISCUSSION Sphaleriteandgalenamineralizationhaslongbeenknownandexploitedinthepast-producingPinePointPb-Znminingdistrict.Carbonate-hostedsphaleriteandgalenaoutcropandsubcropbeneathtillinthePinePointarea;however,tothewestoftheHayRivertherearenodocumentedoccurrencesofbedrockmineralizationexposedatthebedrocksur-face,onlyreportsofsphaleriteandgalenamineralizationatdepthindrillcore(Hannigan2006a).Thisisimportanttonote,becausegalenaandsphaleritecouldonlybeincorporatedintotheglacialandpost-glacialsedimentsifthebedrockminer-alizationsubcropsandwasexposedtoanoverridingglacier.AsinglePb-Znmineraloccurrence,Qito,islocatednearthenorthernlimitofthestudyarea,onthewestsideofGreatSlaveLake,ontheRabbitLakeFaultZoneandisdescribedasgalenaandsphaleritemineralizationhostedinPresqu’iledolostone(Turner2006).Thissiteis>100kmtothenortheastoftheneareststreamsedimentanomalynearKakisaLake.ThepresenceofelevatedsphaleriteandgalenagraincountsinstreamsedimentHMCsdocumentedinthisstudy,distaltoPinePointdistrict,issignificantinthatitimpliesthattheLau-rentideIceSheeterodedsphaleriteandgalenamineralizationexposedatbedrocksurfaceatunknownsources.Mineral-richglacialsedimentsweredeposited,whichweresubsequentlyreworkedintolocalstreamsediments.

Figure 9. Number of (A) chalcopyrite grains and (B) scheelite grains in the 0.25-0.5 mm heavy mineral fraction (normalised to a 50 g heavy mineral fraction weight) recovered from stream sediment samples in the 2017 GSC GEM stream sediment survey (Day et al. 2018a). The large black rectangle is the Pine Point mining district containing >100 Pb-Zn ore bodies distributed over 1600 km2 (Hanni-gan 2006b). See Figure 7 for bedrock legend.


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EXPLORATION TARGETS PreliminarySandPbisotopedatafromgalenagrainsinregionsaroundTroutandKakisalakesindicatethatgrainsarefromproximalsourcesandnotdispersedfromPinePoint(King et al.2018).Basedonthesimilarityoftheδ34SvaluesforgalenagrainsfromthePASsurveystothosefromknownMVTdeposits,thegalenainthestudyarealikelyoriginatedfromMVT-stylemineralization.GlacialdispersalstudiesinthePinePointminingdistrictbyOviattet al.(2015)andMc-Clenaghanet al.(2018)showedthat700mdown-icefrommineralization,tillsamplesgenerallycontaintensofgrainsofgalena,whichisareflectionofthelowhardnessofgalena(2.5–3)anditsbrittlenatureduetoitscubiccleavage.Galenararelysurvivesglacialtransportbeyond1kmbecauseofitssoftness.Thus,itisassumedthatthegalenagrainsinthePAStillsamplesarelocallyderived(i.e.,likely<1kmfromtheirsource).AspreviouslysuggestedbyHannigan(2006b),Pb-Znexplorationshouldbefocusedincarbonateunitsproximaltothefaultsintheregion,includingtheTroutLake,Rab-bitLake,andTathlinafaultzones,aswellastheCameronHillsstructure(Fig.4). Chalcopyritefoundintillsthroughoutthestudyareamayhavebeensourcedfromsediment-hostedCumineralization,asindicatedbythesignificantvariationsinδ34Svalues,afeaturefoundinsediment-hostedCudepositsglobally(Leblanc&Arnold1994;ElDesoukyet al.2010).ThepresenceofchalcopyritegrainsinthePAStillsurveysintheTroutLake-Kakisaarea(Fig.4)poseanintriguingquestionofprovenance.Bedrocklithologiesunderlyingthestudyareaarees-sentiallyanundeformedsedimentarypackageofPaleozoiccarbonatesandMesozoicshales,siltstonesandsandstonescross-cutbytheNE-SWtrendingGreatSlaveLakeShearZoneandseveralsignificantsubparallelfaultstructures(Eaton&Hope,2003).AsingleCu-Znmineraloccurrence,Moisey,islocatedwithinthestudyarea,adjacenttotheLiardRiver,andisdescribedasKipushi/Manto-typemineralizationhostedinthecarbonateandshaleunitsoftheUpperDevonianFortSimpsonFormation(Dudek1993).Note,theMoiseysitecannotbethesourceoftheelevatedHMCchalcopyritegrainsasitissituatedglaciallydown-flow,atthewesternedgeofthestudyarea.Thearcuatechalcopyritetrendiseithercoincidentwith, or is proximal to the same host lithologies and warrants further investigation as to whether the chalcopyrite grains recoveredfromthestreamsedimentHMCsamplesaregeneticallyrelated. Arsenopyritegrainshaveδ34SvaluessimilartoorogenicAudepositsnearYellowknife(400kmtothenortheast),indi-catinggrainsfoundinthestudyregionmayhavebeensourcedfromsimilardepositsup-iceofthisregion(Wanlessetal.1960).Thesignificanceofscheeliteinthestreamsedimentsisundetermined;however,futuremineralchemistrystudiesmayshedlightonbedrockprovenanceandpotentiallyglacialtransporthistory.

FUTURE WORKInadditionto in situisotopemethods,δ34Sisotopesofsphalerite, chalcopyrite and galena grains in till were mea-suredattheUniversityofOttawaG.G.HatchStableIsotopeLaboratory.Fullinterpretationsofδ34SandPb-isotopicdatafromPASsurveysampleswillbeavailableinfutureGSCpubli-cations.On-goingresearchatMemorialUniversitywillprovideadditionalδ34S,Pb,andgeochemicaldatafromGEM2GSCtillandstreamsedimentsamples(Paulenet al.2017,2018;Dayet al.,2018a,b).FutureworkwillincludeSEM-EDS,EPMA,LA-ICP-MS,SIMSandconventionalsulphurisotopeworkonsulphidephases including sphalerite, galena, chalcopyrite and arse-nopyritegrainsrecoveredfrom2017tillandstreamsedimentsamples.SeveralbedrocksamplescollectedfromthePinePointdistrictwillalsobeusedinconjunctionwithdatafrompreviousstudies(Oviatt2013;Oviattet al.2015),alongwithbedrockanddrillcoresamplesfromothermineraloccurrencesin the area, to compare potential source regions for sulphide speciesrecoveredfromsurfacetillsamples.Mineralchemis-trystudiesalsowillbeundertakenonscheelitegrains,soastodeterminepotentialbedrocksourcesofthescheeliteanddeposittypeoforigin(e.g.,Poulinet al. 2018).

ACKNOWLEDGEMENTSThisresearchispartoftheGeologicalSurveyofCanada’sGeo-mappingforEnergyandMineralsGEM-2Program,SouthernMackenzieSurficialactivity,conductedunderNWTScientificResearchLicence#16110.TheNorthwestTerritories




GeologicalSurveyisthankedforprovidingthePASbasemetalindicatormineralsforanalyses.TheauthorswouldliketoacknowledgeGlennPierceyandDr.GrahamLayne(MemorialUniversity)forSIMSPbandSisotopicanalysis.Addition-ally,Dr.WandaAylward(MemorialUniversity)isacknowledgedforassistancewithpreliminarySEMimagingandanalysis.AdditionalsupportforgrainanalysisisprovidedbyaNSERCDiscoveryGranttoStephenPiercey.AssistancewithallaspectsoffieldworkwascheerfullyprovidedbyGEM-2fundedstudentsGrantHagedorn(UniversityofWaterloo),RobertKing(MemorialUniversity),JoeliPlakholm(CarletonUniversity)andJamieSapera(BrockUniversity).Excellentassis-tanceinthefieldandwildlifemonitoringwasprovidedbyIreneGrahamandPatMartel(Kátł’odeecheFirstNation),DarcySimba(Ka’a’geeTuFirstNation)andHenrySabourin,JamesNadliandAlanFarcy(DehGahGot’ieKoeFirstNation).DavidHuntley(GSCVancouver)andEXPLOREeditorBethMcClenaghanarethankedforcriticalreviewsofearlierdraftsofthispaper.NRCancontributionnumber20180342.

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Plouffe,A.,Paulen,R.C.,Smith,I.R.&Kjarsgaard,I.M.2008.SphaleriteandindicatormineralsintillfromtheZamaLakeregion,north-westAlberta(NTS84Land84M).GeologicalSurveyofCanada,OpenFile5692andAlbertaGeologicalSurvey,SpecialReport96.

Plouffe,A.,McClenaghan,M.B.,Paulen,R.C.,McMartin,I.,Campbell,J.E.&Spirito,W.A.2013.Processingofglacialsedimentsfortherecoveryofindicatorminerals:protocolsusedattheGeologicalSurveyofCanada.Geochemistry: Exploration, Environment, Analysis, 13,303-316.

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SedimentaryBasin:theBuffaloHeadHillssurvey,north-centralAlberta.InApplicationoftillandstreamsedimentheavymineralandgeochemicalmethodstomineralexplorationinWesternandNorthernCanada.R.C.PaulenandI.McMartin(eds.).GeologicalAssociationofCanada,ShortCourseNotes18.pp.111-124.

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NUMBER 181 EXPLORE

The29thInternationalAppliedGeochemistrySymposium(IAGS)willbeheldinthe“GardenCity”ofViñadelMar,ChileinNovember9-13,2020.ThecityofViñadelMar,incentralChile,islocated120kmnorthwestofthecapitalcityofChile,Santiago.Itisawell-knowntouristdestination,famousforitsbeaches,theneighboringworldheritagecityofValparaisoandabundantparks.Thecitylieswestofthecoastalcordillerainwhichwineriesthriveamongthevalleys,togetherwithotherproductiveactivitiesthatincludegoldandbasemetalmining.ThelocationofViñadelMarprovideseasyaccessandrepresentsagreatstartingpointforpre-andpost-conferenceactivities,includingfieldtripsandsocialortouristactivities.

Chileisaneasilyaccessedcountry.Itsinternationalairportiswellconnectedworldwide,andmostnationalitiesdonotrequireavisaforentry.TheofficiallanguageofChileisSpanish,buttheofficialconferencelanguageisEnglish.

Informationabouttheconference,venue,program,workshops,andpreandpostconferencefieldtripswillprovidedinearly2019.

29th International Applied Geochemistry Symposium (IAGS)

Viña del Mar, ChileNovember 9-13, 2020


Welcome New AAG Members 2018FellowsFellowsarevotingmembersoftheAssociationandareactivelyengagedinthefieldofappliedgeochemistry.TheyarenominatedtobeaFellowbyanestablishedFellowoftheAssociationbycompletingtheNominatingSponsor’sForm. Mr.AaronBaenschGlobalManager-Geosciences(InternationalMiningGroup)Level4,97WaterlooRoadMacquariePark,NewSouthWalesAUSTRALIA2113Membership#4066

MembersMembersarenon-votingmembersoftheAssociationandareactivelyengagedinthefieldofappliedgeochemistryat the time of their application and for at least two years prior to the date of joining. Ms.EmiliaPrincipeGeologist,B2GoldCorporation4960LongLakeRoad,Sudbury,ONCANADAP3G1K9Membership#4390 Mr.AlexanderSeyfarthGlobalXRFMgr,SGS5576WestRiverOaksRoadJanesville,MIUNITEDSTATES53545Membership#4395

Student MembersStudentMembersarestudentsthatareenrolledinanapprovedcourseofinstructionortraininginafieldofpureorappliedscienceatarecognizedinstitution.Studentmemberspayminimalmembershipfees.

Mr.DarrenCheahPhDCandidateCurtinUniversityBuilding500KentStreet,Bentley,WAAUSTRALIA6102Membership#4391 RachelKirbyPhDCandidateDept.ofGeochemistryandCosmochemistryAustralianNationalUniversityCanberraACTAUSTRALIA0200Membership#4392

NannanHeDept.ofEarthandPlanetarySciencesCurtinUniversityKentStreet,Bentley,Perth,WesternAustraliaAUSTRALIA6102Membership#4393

Dr.PennyKingAssociateProfessorAustralianNationalUniversityBldg142MillsRd,ANUActon,ACTAUSTRALIA2601Membership#4398 Mr.ErnestoAlvarez,GeologistPanPacificCopper,Exploration,PeruS.A.C.Av.VictorAndrésBelaunde147ViaPrincipal155,TorreRealTresOficina601,CentroEmpresarial,SanIsidroLima,PERU15073Membership#4399

DanleiWangWesternOrganic&IsotopeGeochemistryCurtinUniversityKentStreet,BentleyPerth,WesternAustraliaAUSTRALIA6102Membership#4394 MissDarylBlanksUniversityofLeicesterGeologyDept.,BennettBuildingUniversityRoadLeicester,EnglandUNITEDKINGDOMLE17RHMembership#4396

Ms.OlgaOrlovaLomonosovMoscowStateUniversity23KrasnogvardeiskyblvdMoscowRUSSIA142119Membership#4397

NUMBER 181 EXPLORE

BARRINGER - THE BOOKExploration, Remote Sensing, Environment, Analysis, SecurityThe 1960’s and 70’s were marked by an explo-sion in mineral exploration and remote sensing technology. A leader throughout this period was Dr. Anthony (Tony) Barringer and his team at Barringer Research Ltd. (BRL). The highly suc-cessful airborne geophysical methods created at BRL are well known while the contributions to exploration geochemistry and many other fields are not. This book documents the many advances in geochemical theory, as well as the ground, airborne and remote sensing techniques plus analytical methods that were conceived and developed under the leadership of Tony Barrin-ger. Innovative concepts backed by pioneering research funded by BRL on the movement of metals in rock, soil and vegetation remain im-portant areas of investigation. Tony Barringer’s ability to bring together a diverse team includ-ing geologists, geochemists and physicists with electrical, optical and aeronautical engineers under one roof, provide leadership, a highly stimulating environment and financial support, was truly remarkable. This led to ground break-ing advances in a number of different fields, including: exploration geochemistry for miner-als and oil and gas; environmental monitoring from the ground, aircraft and space; and civilian and armed forces security. The underlying scientific principles for many of the inventions, now upgraded with modern electronics, are still considered state of the art. One of the many inventions from the BRL “incubator” described in this book is Ionscan, the drug and explosive screening device used in most airports today, which was conceived and developed by BRL in conjunction with technology for the detection of mineral deposits.

Hard Cover book, including shipping US$ 68.00*, **Soft Cover book, including shipping US$ 58.00*, **International shipping is by surface mail, for air mail please add US$ 20.00/ volume

*Note, for US$48 and US$38 or $C65 and $C55 respectively (to avoid shipping charges) there will be limited number of both the hard and soft cover books available the MDRU booth at Roundup in Vancouver (first come first served) or directly available in Van-couver for a limited time from [email protected] **Note there will also a very limited number at the MDRU both at the PDAC. To reserve your copy for pick up at the MDRU booth please email [email protected] at the latest by Feb 22nd.

HOW TO ORDER:ASSOCIATION OF APPLIED GEOCHEMISTS. All payments must be made in one of the following formats: bank draft, personal cheque (drawn on a US$ account), or money order made out to the Association of Applied Geochemists, sent toAAG Business Office, P.O. Box 26099, 72 Robertson Rd. Nepean, ON, Canada K2H 9R0Tel: 613-828-0199 Fax: 613-828-9288Email: [email protected]

Do you need a receipt? Include self-addressed envelope and US $2.00, otherwise your cancelled cheque or bank statement is your receipt.

Is your cheque drawn on a bank outside the U.S.A. or Canada? If yes, add US $15.00


EXPLORATIONGEOLOGY

Ore deposit models, alteration geochemistry and ore textures

OVERVIEWThis short course offers theoretical foundations and practical training in exploration geology, alteration geochemistry and ore interpretation. We welcome participants from universities, research institutions as well as exploration or industrial companies wishing to further their professional development. In addition, the short course will host a poster session for participants who wish to present and discuss their own projects. The course contents are aimed at master and doctoral students but the course is open to early career scientists and participants from industry and private sector as well. The official language will be English.

An optional one‐day excursion to ore deposits in Schwarzwald (Black Forest) is planned for March 21, 2019. The field trip will demonstrate various styles of mineralization related to rifting of the Upper Rhine graben.

INSTRUCTORSProf. David Dolejš (lectures and practical sessions) holds chair of mineralogy and petrology at the University of Freiburg. He conducts research on magmatic and hydrothermal systems, including field and theoretical approaches to geochemical processes and hydrothermal fluid flow during the formation of mineral deposits.

Dr. Kateřina Schlöglová (software sessions and field trip) is an assistant at the University of Freiburg and a consultant for mineral exploration. She gained her industry experience as an exploration geologist for Dragon Mining Ltd. She is interested in physico‐chemical processes responsible for formation of magmatic‐hydrothermal deposits and exploration methods.

Dr. Malte Junge (ore microscopy) is a lecturer in mineralogy and mineral resources at the University of Freiburg, with previous employment at the Federal Institute for Geosciences and Natural Resources (BGR) in Hanover. His research interest focuses on ultramafic‐mafic, granitic and VMS‐type ore deposits.

Dr. Denis Schlatter, EurGeol (exploration models and case studies) is the CEO of the Helvetica Exploration Services GmbH. He has over 20 years of experience in mineral exploration in industry, academia and government, particularly gold and base metal exploration in the Arctic with 15 field seasons in Archean provinces of Greenland.

COSTS include registration, course materials, coffee breaks, social REGISTRATION deadline January 10 9 , 201

exploration geology: objectives, approaches and methods

sampling, analytical methods and data processing

geochemical discriminationalteration geochemistry and vectoring

visualization of geochemical data: ioGAS software

ore microscopyexploration case studies

3 days of lectures (50 %) and practical sessions (50%)

poster session of participants1 day field trip (optional)

50 EUR ‐ students and early career scientists*400 EUR ‐ non‐academic and industry atendees30 EUR ‐ excursion fee*non‐resident student members of the DMG are eligible for travel support of 50 €

for registration, see: www.minpetro.uni‐freiburg.de/expgeo for further inquiries contact: Dr. Katerina Schlöglova

[email protected]‐freiburg.de

COURSE TOPICS

COURSE STRUCTURE

March 18‐21, 2019Institute of Earth and Environmental Sciences, University of Freiburg, Germany

Albertstrasse 23b, 79104 Freiburg im Breisgau www.minpetro.uni‐freiburg.de/expgeo

PRACTICAL INFORMATIONparticipants may use their own or university‐provided PC

geochemical visualization softwarewill be provided

participants my obtain 2 ECTS credits after succesful completion of the course and written examination

rhyolite

dacite

andesitebasalt

mas

s loss

mas

s ga

in

0

0.5

1.0

1.5

2.0

100 200 300 400

TiO2

wt %

Zr ppm

felsic volcfels-sedsedimentmafic volcmafic dikes

ore zone Iore zone IIore zone IIIore zone IV

Deposit A

Deposit Bore zone

short course

1 cm

NUMBER 181 EXPLORE

CALENDAROF EVENTSInternational,national,andregionalmeetingsofinterestto

colleaguesworkinginexploration,environmentalandotherareasofappliedgeochemistry.TheseeventsalsoappearontheAAGweb

page at: www.appliedgeochemists.org.

Pleaseletusknowofyoureventsbysendingdetailsto:Steve Amor

GeologicalSurveyofNewfoundlandandLabradorP.O.Box8700,St.John’s,NL,Canada,A1B4J6

Email: [email protected]:+1-709-729-1161Or TomMeuzelaar,AAGWebmaster,Email: [email protected]

2019

6-9 JANUARY InternationalSoilScienceMeeting.SanDiegoCAUSA.Website:tinyurl.com/y9oorlm410-11 JANUARY ICCEEST2019:21stInternationalConferenceonChemical,Ecological,EnvironmentalScienceand Technology.Singapore.Website:tinyurl.com/y7yo7r6r24-25 JANUARY 21stInternationalConferenceonOrganicGeochemistryandGeochemicalEngineering.ParisFrance. Website:tinyurl.com/y7et6aa728-31 JANUARY MineralExplorationRoundup.VancouverBCCanada.Website:roundup.amebc.ca 30-31 JANUARY 21stInternationalConferenceonEnvironmentalPollution,PublicHealthandImpacts.DubaiUAE. Website:tinyurl.com/yava77l53-8 FEBRUARY EuropeanWinterConferenceonPlasmaSpectrochemistry.PauFrance. Website:winterplasma19.sciencesconf.org8-9 FEBRUARY AtlanticGeoscienceSociety45thColloquiumandAnnualGeneralMeeting.FrederictonNBCanada. Website:tinyurl.com/ydhkz8tz26-28 FEBRUARY JanetWatsonMeeting2019:Fromcoretoatmosphere:Deepcarbon.LondonUK. Website:www.geolsoc.org.uk/jwatson193-6 MARCH ProspectorsandDevelopersAssociationofCanadaAnnualConvention.TorontoONCanada. Website:www.pdac.ca/convention10-14 MARCH Minerals,Metals&MaterialsSocietyAnnualMeeting&Exhibition.SanAntonioTXUSA. Website:www.tms.org/tms201911-14 MARCH SIAMConferenceonMathematical&ComputationalIssuesintheGeosciences.HoustonTXUSA. Website:www.siam.org/Conferences/CM/Main/gs1918-21 MARCH ExplorationGeologyshortcourse.Theoreticalfoundationsandpracticaltraininginmineralexploration geochemistryandgeology,alterationgeochemistryandoreinterpretation.UniFreiburg,Freiburgim Breisgau,Germany.Website:http://www.minpetro.uni-freiburg.de/expgeo7-12 APRIL EGUGeneralAssembly.ViennaAustria.Website:www.egu2019.eu28 APRIL - 1 MAY CIMConvention.MontrealQCCanada.Website:convention.cim.org3-5 MAY InternationalConferenceonGeographicalInformationSystemsTheory,ApplicationsandManagement. HeraklionGreece.Website:www.gistam.org6-9 MAY 9thWorldConferenceonSamplingandBlending.BeijingChina.Website:www.wcsb9.com13-15 MAY GAC-MAC-IAH/CNCAnnualMeeting.QuebecCityQCCanada.Website:tinyurl.com/y9dffld53-8 JUNE 8thInternationalWorkshoponCompositionalDataAnalysis.TerrassaSpain. Website:tinyurl.com/y7prnhoo23-28 JUNE GordonResearchConference:CatchmentScience:InteractionsofHydrology,BiologyandGeochemistry. AndoverNH.Website:tinyurl.com/y9dsvkac24-27 JUNE QuantitativeMicroanalysis2019.MinneapolisMNUSA.Website:tinyurl.com/y8fayprt14-19 JULY GordonResearchConference:DiscoveringChemicalProcessesandMechanismsinaChangingOcean. HoldernessNHUSA.Website:tinyurl.com/yahb7f7o 15-18 JULY 6thAnnualInternationalConferenceonGeology&EarthScience.AthensGreece. Website:www.atiner.gr/geology21-26 JULY 16thInternationalSymposiumonWater-RockInteraction.TomskRussia.Website:wri16.com22-23 JULY 6thAnnualInternationalConferenceonGeology&EarthScience.AthensGreece. Website:www.atiner.gr/geology



CALENDAROF EVENTS... continued from page 26

25-31 JULY INQUA2019.DublinIreland.Website:www.inqua2019.org4-8 AUGUST Microscopy&Microanalysis2019Meeting.PortlandOR.Website:tinyurl.com/y9ejytzy18-23 AUGUST Goldschmidt2019.Barcelona,Spain.Website:goldschmidt.info/201927-30 AUGUST 15thBiennialMeetingoftheSocietyforGeologyAppliedtoMineralDeposits.GlasgowUK. Website:www.sga2019glasgow.com2-5 SEPTEMBER 2ndAustralasianExplorationGeoscienceConference.PerthWAAustralia.Website:2019.aegc.com.au8-13 SEPTEMBER 14thInternationalConferenceonMercuryasaGlobalPollutant.KrakowPoland. Website:www.mercury2019krakow.com/gb17-18 SEPTEMBER 21stInternationalConferenceonIsotopeHydrologyandGeochemistry.RomeItaly. Website:tinyurl.com/y8excuwr 7-20 OCTOBER SEG2019:SouthAmericanMetallogeny:SierratoCraton.SantiagoChile.Website:tinyurl.com/y7k4dm6j27-30 OCTOBER 6thInternationalConferenceonSeleniumintheEnvironmentandHumanHealth.Yangling/Xi’anChina. Website:icsehh2019.csp.escience.cn29-30 OCTOBER 12thFennoscandianExplorationandMining.LeviFinland.Website:fem.lappi.fi/en

2020

2-8 MARCH 36thInternationalGeologicalCongress.DelhiIndia.Website:36igc.org20-24 MAY GeologicalSocietyofNevada2020SymposiumVisionforDiscovery:GeologyandOreDepositsofthe BasinandRange.SparksNVUSA.Website:www.gsnv.org/2020-symposium17-21 AUGUST 34thInternationalGeographicalCongress.Istanbul,Turkey.Website:www.igc2020.org/en24-28 AUGUST Eurosoil2020.Geneva,Switzerland.eurosoil2020.com

Recently Published in ElementsVolume14,no.4,CentralAndes:MountainsMagmas,andMinerals

Thisvolumeoffersaneclecticmixoftopography,magma-tism,heatflowandmineraldeposits.ThenewAAGcoun-cillorsfor2018and2019areprofiledinthisissue,aswellasourneweditorforGEEA,ScottWood.

Volume14,no.5,Deep-oceanMineralDepositsIssue5thisyearexaminesdeep-oceanmineraldepositsand their potential exploitation from an ecological and regulatoryperspective.AAGnewsinthisissueacknowl-edgedtheworthymedalrecipientsfromthe2018IAGS.

Dennis Arne

NUMBER 181 EXPLORE

Gwendy E.M. Hall, Treasurer 110AaronMerrickDrive Merrickville,ONK0G1N0 Canada TEL:+1-613-269-7980 email: [email protected]

David B. Smith, Secretary U.S.GeologicalSurvey Box25046,MS973 Denver,CO80225,USA TEL:(303)236-1849 email: [email protected]

Al ArseneaultP.O.Box26099,72RobertsonRoad,Ottawa,ONK2H9R0CANADA,

TEL:(613)828-0199FAX:(613)828-9288,email: [email protected]

THE ASSOCIATION OF APPLIED GEOCHEMISTSP.O. Box 26099, 72 Robertson Road, Ottawa, Ontario K2H 9R0 CANADA • Telephone (613) 828-0199

www.appliedgeochemists.org

AAG COMMITTEES

COUNCILLORS

Brazil JoãoLarizzatti [email protected] BrianTownley [email protected] XueqiuWang [email protected] Europe PerttiSarala [email protected]

Southern Europe BenedettoDeVivo [email protected] Asia IftikarMalik [email protected] Africa Theo Davies [email protected] and Republic of Ireland KateKnights [email protected]

Dennis Arne, Vice-President PrincipalConsultant TelemarkGeosciences 17ChurchStreet Yackandandah,Vic,Australia3749 TEL:+61407300605 email: [email protected]

Steve Cook, President 1243BerkleyRoad NorthVancouver,BC CanadaV7H1Y5 TEL:+1604-985-4802 email:[email protected]

New MembershipPaulMorris,[email protected] Awards and MedalsRyanNoble,[email protected] Theo Davies YuliaUvarova

AdmissionsNigelRadford,[email protected] EducationDavidMurphy,chair [email protected],[email protected],[email protected],[email protected]

SymposiaDavidCohen,[email protected]

2018-2019 MaurizoBarbieri DavidMurphy GrahamSylvester YuliaUvarova ErickWeiland

AAG COORDINATORSAAG Student Paper PrizeDavidCohen,[email protected]

AAG WebsiteGemmaBonham-Carter,[email protected] Coordinator: TomMeuzelaar,[email protected]

Geoscience CouncilsDavidCohen,[email protected]

GEEA ScottWood,[email protected]

EXPLOREBethMcClenaghan,[email protected]

[email protected]

AAG Regional CouncillorsDennisArne,[email protected]

2017-2018 DaveCohen RayLett TomMeuzelaar JuanCarlosOrdóñezCalderón RenguangZuo

OFFICERSJanuary-December2018

AAG BUSINESS MANAGER

REGIONAL COUNCILLORS

1243BerkleyRoadNorthVancouver,BCCanadaV7H1Y5TEL:+1604-985-4802email:[email protected]

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