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金属矿山 ›› 2020, Vol. 49 ›› Issue (11): 152-161.

• 地质与测量 • 上一篇    下一篇

栾川县矿集区骆驼山锌铜多金属矿床地质特征及成因

云辉,郭波,胡红雷,朱红运,韩江伟,严海麒,李伟   

  1. 1. 河南省地质调查院,河南 郑州 450001;2.河南省金属矿产成矿地质过程与资源利用重点实验室,河南 郑州 450001
  • 出版日期:2020-11-15 发布日期:2020-12-22
  • 基金资助:
    河南省地质勘查基金项目(编号:豫国土资发[2012]80号,豫国土资发[2014]3号,豫国土资发[2015]70号)

Geological Characteristics and Genesis of the Luotuoshan Copper-zinc Polymetallic Deposit in Luanchuan County

YUN Hui,GUO Bo,HU Honglei,ZHU Hongyun,HAN Jiangwei,YAN Haiqi,LI Wei   

  1. 1. Henan Institute of Geological Survey, Zhengzhou 450001,China;2. Henan Key Laboratory for Metal Mineral Ore-forming Geological Process and Utilization of Resource,Zhengzhou 450001, China
  • Online:2020-11-15 Published:2020-12-22

摘要: 河南省栾川县骆驼山锌铜多金属矿位于华北陆块南缘与北秦岭造山带的结合部位,栾川矿集区西北部,南泥湖钨钼矿床外围西侧。矿区主要赋存有硫铁矿、锌铜矿,伴生白钨矿、辉钼矿、萤石等多种矿产 。为了对骆驼山锌铜多金属资源总体情况进行可靠的预测评价,利用骆驼山锌铜多金属矿已有的小比例尺地形地质图、钻孔资料、地球化学数据、重力数据、磁法数据、电法数据等,建立了多元地学信息三维地质模 型,对成矿有利部位进行了定量预测,并进行了深部工程验证,深部找矿工作取得了重大突破。根据最新勘查成果,在骆驼山锌铜多金属矿区深部及外围控制了4条锌铜多金属矿体,新增资源量铅金属量3.97 万t、锌 金属量56.97 万t、铜金属量3.61 万t、银金属量30.68 t,为一大型锌铜多金属矿。综合研究认为:位于栾川矿集区的骆驼山锌铜多金属矿床与周围的钼钨铅锌矿床成矿物质来源相似,属于同一岩浆—热液成矿系统 ,为岩浆热液交代型层状矽卡岩型矿床。成矿系统自深部至外围表现出明显的分带性,即深部为南泥湖岩体,岩体内外接触带为南泥湖钨钼矿床,中上部(600~1 500 m范围)为矽卡岩型铜锌多金属矿床(中高温), 上部为脉状铅锌银矿床(1 500~2 500 m范围)。骆驼山(锌铜多金属)矿床位于成矿系统中上部(600~1 500 m范围)中间过渡带,仅为其中的一部分,找矿潜力巨大,沿背斜轴向西,以及背斜的北翼均有成矿的可 能,通过进一步勘查有望成为一个超大型锌铜多金属矿床。

关键词: 深部找矿, 铜锌多金属矿, 矽卡岩型, 南泥湖背斜, 找矿方向

Abstract: The Luotuoshan zinc-copper polymetallic deposit in Luanchuan County,Henan Province is located at the junction of the southern margin of the North China Block and the North Qinling Orogenic Belt, in the northwest of the Luanchuan mining area, mainly containing pyrite, zinc, copper, associating with few scheelite, molybdenite, fluorite and other minerals. In order to conduct reliable prediction evaluation on the overall situation of copper-zinc polymetallic resources, existing small scale terrain geological map, drilling data, geochemical data, gravity data, magnetic data and electric data are adopted to establish a 3D geological model of multivariate geological information.With quantitative prediction of favorable section and deep engineering verification, major breakthrough was made in deep prospecting work. According to the latest exploration achievements in Luotuoshan zinc-copper polymetallic deposit, four zinc-copper polymetallic ore bodies were found in the deep and periphery of the mine. New added lead, zinc, copper and silver resources are 39 700 tons, 569 700 tons, 36 100 tons and 30.68 tons respectively, and it belongs to a large-scale zinc-copper polymetallic. Comprehensive study suggests that the Luotuoshan zinc-copper polymetallic deposit located in the Luanchuan ore concentration area is similar to the surrounding molybdenum-tungsten-lead-zinc deposits. It belongs to the same magma-hydrothermal mineralization system and is a layered skarn deposit of magma-hydrothermal metasomatic. The metallogenic system shows obvious zoning from the deep to the periphery, and that is,the deep part is the Nannihu pluton, with Nannihu tungsten-molybdenum deposit at the outer contact zone of the pluton, and the middle-upper part (600~1 500 m range) is a skarn type copper-zinc polymetallic deposit (medium-high temperature), and the upper part is a vein-shaped lead-zinc-silver deposit (1 500~2 500 m range). The Luotuoshan deposit is located at the middle-upper transitional zone of the metallogenic system and it is only a small part. The prospecting potential is huge, and there is possible for mineralization along the anticline axis to the west and the north wing of the anticline,dsides that,these areas are expected to become a super-large zinc-copper polymetallic deposit with further exploration.

Key words: deep prospecting, copper-zinc polymetallic deposit, skarn type, Nannihu anticline, prospecting direction