澳大利亚昆士兰州克朗克里铜金矿床地质特征和成矿规律

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1、澳大利亚昆士兰州克朗克里铜（金）矿床地质特征及成矿规律李伟，曾敏(云南铜业矿产资源勘查开发有限公司，云南昆明650051)摘要：克里克朗铜（金）矿床位于芒特-艾萨构造窗内旺加及匡比-马布的交汇部位，地处世界著名的铜-铅-锌-银-金成矿带上。矿区主要出露中元古界的SoldierCap群及MaryKathleen群，多期、强烈的变形变质作用使得区内断裂构造发育，位于矿区中部的F4~F11控制着矿（化）体的产出。矿（化）体多赋存于花岗岩断裂带及构造破碎带中，断裂为含矿热液提供运移通道，同时萃取早期岩体中的成矿元素在上部断裂带内富化成矿，为构造热液型铜（

2、金）矿床。通过对矿区内进行物探试验，发现磁法找矿效果良好，确定位于矿区中-东部的M-01及M-03异常具有较好的找矿前景，断裂构造、磁异常及围岩蚀变地段是有利的找矿标志，为下一步找矿工作提供了重要的理论依据，对认识区内具有相似成矿背景矿段的找矿思路具有重要参考作用。关键词：铜（金）矿；地质特征；成矿规律；构造控矿；澳大利亚[中图分类号]P618.31[文献标识码]A[文章编号]GeologicalcharacteristicsandmetallogenicregularityofKerryKronacopper(gold)depositinQue

3、ensland,AustraliaLiWei，ZengMin（YunnanCopperMineralResourcesExplorationandDevelopmentCo.Ltd,Kunming650051,Yunnan）Abstract:KerryKronacopper(gold)depositislocatedinintersectionpartofWongatectonicunitandQumaby-malbontectonicunitinMountIsastructuralwindow,whichbelongstotheworld-fa

4、mouscopper-lead-zinc-silver-goldmetallogenicbelt.TheminingareamainlyoutcroptheSoliderCapGroupandMaryKathleenGroupofmiddleproterozoic.Inthisarea,thefaultstructuredevelopswell,andthedeformationandmetamorphismdevelopsstrongly.ThefaultsF4~F11havecontrolledtheoccurrenceof(minerali

5、zation)ore-body.The(mineralization)ore-bodiesarehostedingranitefaultbeltandstructuralfracturebelt.Thefracturesprovidedthemigrationpathwaysforore-bearinghydrothermalsolution,whichextractedthemetallogenicelementsfromtheearly-stagerockmass.Finally,thefluidcontainedmineralhasconc

6、entratedinore-formationaswell.Generally,theKerryKronacopper(gold)depositisatectonic-hydrothermaltypecopper(gold)deposit.Inaddition,accordingtothegeophysicalexperimentsofminingarea,theauthorholdthatthemagneticmethodhasthebetterprospectingeffects.Besides,theM-01/M-03magneticano

7、malyhavebetterprospectingpotentials,whichlocatedinthemiddle-easternofminingarea.Thisauthorconcludedthatthefaultstructure,magneticanomalyandwall-rockalterationarethefavorableprospectingcriteria.Thisresearchprovideasignificanttheoreticalbasisforthenextprospectingwork,whichcould

8、betheprospectingguidelineinotherwiththesimilargeologicalsettingwithi