摘要
InZhangbalingTectonicBelt,twotypesofmineralization,auriferousquartzveinsandalterationhalos,canobservedwithinmanydeposits.Thepressureofmetallogenesisofauriferousalterationhalosismuchhigherthanthatofquartzvein,thetemperaturesofmetallogenesesofthesetwotypesoforebodiesaredon'tthesameGeochemistrystudyindicatesthatbothofthemaremicro-mesothermaldepositsrelatedtoYanshaniangranites.Theresultsofprotonmicroprobeanalysisofsulphidesfromthegolddepositsintheareashowthatthe'invisible'goldexistedinsulphidesisintheformofmicroinclusions,andtheconcentrationof'invisible'goldinsulphidemineralswithinquartzveinispoorerthanthatfromalterationhalos.Fieldobservationshowsthatthestructuralmodalityofthefracturescontrollingtheorebodiesofauriferousquartzveinisdifferentfromthatoftheauriferousalterationzones.Thefracturecontrollingtheorebodiesofauriferousalterationhalosiscompress-shearfracture,auriferousquartzveiniscontrolledbyextensivefault.Thealterationhaloscrosscutbyauriferousquartzvein.Thewallrocksoftheformeralteredstronglyanddevelopedalterationzoneswell.Thewallrocksofauriferousquartzveinalteredslightly.Theresultsoftectonogeochemicalstudyshowsthattheconcentrationofassociatedmetallogenesiselementsandintensityofalterationarepositivelycorrelatedwithtectonicdeformationstrengthforauriferousalterationhalos.Itindicatesthatitisprobablyageneralcharacterformicro-mesothermalgolddepositsduetothemultistagesofmetallogenesestookplace.Thetectonicenvironmentisthemostimportantfactdeterminingthemechanismoffluidflowandprecipitationofgold,andthenthetypesofmineralizationandmodesofgold.
出版日期
2001年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
