山东国土资源
山東國土資源
산동국토자원
LAND AND RESOURCES IN SHANGDONG PROVINCE
2014年
8期
1-6,11
,共7页
铜矿床%地质特征%矿床成因%成矿模式%和静县%新疆
銅礦床%地質特徵%礦床成因%成礦模式%和靜縣%新疆
동광상%지질특정%광상성인%성광모식%화정현%신강
Copper deposit%geological characteristics%origin of deposit%metallogenic model%Hejing coun-ty%Xinjiang Uygur Autonomous Region
巴音铜矿区位于中天山中段的南缘，伊犁地块东南缘，南临南天山缝合带，处在阿吾拉勒山与那拉提山交会处，属那拉提铜、镍、金成矿带，其地质、构造特征比较复杂，成矿地质条件较为有利。通过分析区域成矿背景及矿区地质特征，总结矿床成因及控矿因素，证实该区矿化分为火山火山热液型、脉岩型和热液脉型3种类型，就成矿机理而言，这3种矿化的形成有着密切的内在联系，在本质上都与该区晚志留世火山活动密切相关。结合区内各种矿化所占的比重和形成时间的先后顺序，其成因类型可概括为：巴音铜矿为以晚志留世海相火山火山热液型矿化为主，伴有晚期脉岩矿化，局部受海西早期花岗质岩浆热液叠加、改造的中-低温铜矿床。不同类型矿化的主要控矿因素不同，火山岩型矿化的控矿因素主要为火山活动形式、活动阶段及岩性，同时断裂构造也有一定的控制作用；脉岩型矿化系受岩性和脉体本身（出露部位和规模）控制，较好矿化一般出现于脉岩规模较大者中，或脉岩的局部膨大部位；热液脉型矿化主要受角闪花岗岩体及其接触带控制，局部还受到后期断裂破碎带控制，矿体沿断裂破碎带充填而成。
巴音銅礦區位于中天山中段的南緣，伊犛地塊東南緣，南臨南天山縫閤帶，處在阿吾拉勒山與那拉提山交會處，屬那拉提銅、鎳、金成礦帶，其地質、構造特徵比較複雜，成礦地質條件較為有利。通過分析區域成礦揹景及礦區地質特徵，總結礦床成因及控礦因素，證實該區礦化分為火山火山熱液型、脈巖型和熱液脈型3種類型，就成礦機理而言，這3種礦化的形成有著密切的內在聯繫，在本質上都與該區晚誌留世火山活動密切相關。結閤區內各種礦化所佔的比重和形成時間的先後順序，其成因類型可概括為：巴音銅礦為以晚誌留世海相火山火山熱液型礦化為主，伴有晚期脈巖礦化，跼部受海西早期花崗質巖漿熱液疊加、改造的中-低溫銅礦床。不同類型礦化的主要控礦因素不同，火山巖型礦化的控礦因素主要為火山活動形式、活動階段及巖性，同時斷裂構造也有一定的控製作用；脈巖型礦化繫受巖性和脈體本身（齣露部位和規模）控製，較好礦化一般齣現于脈巖規模較大者中，或脈巖的跼部膨大部位；熱液脈型礦化主要受角閃花崗巖體及其接觸帶控製，跼部還受到後期斷裂破碎帶控製，礦體沿斷裂破碎帶充填而成。
파음동광구위우중천산중단적남연，이리지괴동남연，남림남천산봉합대，처재아오랍륵산여나랍제산교회처，속나랍제동、얼、금성광대，기지질、구조특정비교복잡，성광지질조건교위유리。통과분석구역성광배경급광구지질특정，총결광상성인급공광인소，증실해구광화분위화산화산열액형、맥암형화열액맥형3충류형，취성광궤리이언，저3충광화적형성유착밀절적내재련계，재본질상도여해구만지류세화산활동밀절상관。결합구내각충광화소점적비중화형성시간적선후순서，기성인류형가개괄위：파음동광위이만지류세해상화산화산열액형광화위주，반유만기맥암광화，국부수해서조기화강질암장열액첩가、개조적중-저온동광상。불동류형광화적주요공광인소불동，화산암형광화적공광인소주요위화산활동형식、활동계단급암성，동시단렬구조야유일정적공제작용；맥암형광화계수암성화맥체본신（출로부위화규모）공제，교호광화일반출현우맥암규모교대자중，혹맥암적국부팽대부위；열액맥형광화주요수각섬화강암체급기접촉대공제，국부환수도후기단렬파쇄대공제，광체연단렬파쇄대충전이성。
Bayin copper deposit locates in the southern margin of the middle section of medium Tianshan Mountains,the southeast margin of Yili mass,and south part of the Southern Tianshan zone.It is in the intersection part of Awulale mountain and Nalati mountain,and belongs to copper,nickel,gold minerali-zation belt of the Nalati.Its geological,tectonic characteristics are more complex with favourable metallo-genic conditions.Through analysis on regional metallogenic background and geological characteristics of mining area,origin and ore controlling factors of the deposit have been summarized.It is confirmed that the mineralization can be divided into volcano volcano hydrothermal type,vein rock type and hydrother-mal vein type.The formation mechanisms of these 3 kinds of mineralization have close relation,and have close relation with late Silurian volcano activities.Combining with the proportion of various mineralized ar-eas and the sequence of formation time,the origin types can be summarized as:Bayin copper deposit is mainly composed of the late Silurian marine volcano volcano hydrothermal mineralization,and accompa-nied by late vein rock mineralization,and regionally composed of early Hercynian granitic magmatic hydro-thermal superimposition reformation,middle low temperature copper deposit.Main controlling factors of different types of mineralization are volcano activities,activity phases and the lithology,and faults also have certain control effect.Vein type mineralization is controlled by lithology and veins itself (exposed po-sition and scale),Good mineralization appears generally in the vein rock with large scale or in the swollen part of vein rock.Hydrothermal vein type mineralization is mainly controlled by hornblende granite and their contact parts,regionally controllded by fracture belts in the late period.Ore bodeis are formed by filling functionalong the fracture zones.
