| 邱永桢,王国平,李开文,林连宝,林新仁,郭红乐,蓝先灵.俄罗斯图瓦早古生代克孜勒—塔什特克锌多金属矿床成矿模式研究[J].矿产勘查,2025,16(6):1384-1396 |
| 俄罗斯图瓦早古生代克孜勒—塔什特克锌多金属矿床成矿模式研究 |
| The metallogenic model of the Kyzyl Tashtek zinc polymetallic deposit in Tuva, Russia |
| 投稿时间：2024-04-19 |
| DOI：10.20008/j.kckc.202506008 |
| 中文关键词: 克孜勒—塔什特克锌多金属矿床 VMS矿床 喷流管道 分带特征 |
| 英文关键词: Kyzyl Tashtek zinc polymetallic deposit VMS deposit linear pipe zoning characteristics |
| 基金项目:本文受紫金矿业集团内部项目“俄罗斯图瓦克孜勒-塔什特克矿区锌多属矿深边部勘查”资助。 |
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| 中文摘要: |
| 克孜勒—塔什特克锌多金属矿床属于阿尔泰—萨彦岭造山带早古生代陆缘岛弧环境下的火山成因块状硫化物(VMS)矿床，目前已进入深部开采阶段，但对其喷流管道性质、矿床矿化分带的认识比较模糊。本文基于钻孔资料、地质图件的综合分析，结合系统的坑道调研，研究了矿床地质特征，总结了矿床的成矿模式。认为矿床含矿围岩为下寒武统图玛特泰加地层组玄武岩-流纹质凝灰岩双峰式火山岩，属于双峰式酸性火山岩型 VMS矿床，整体受北西西向线性喷流管道控制，具典型的 VMS矿化分带特征，即上部块状矿化、纹层状锌多金属矿化，下部为不规则脉状铜矿化:其中铜矿体呈不规则脉状赋存于喷流管道相的硅化(角砾)岩中；锌多金属矿体产于喷流管道上部的绿泥石片岩内，中部膨大部位矿化类型为纹层状矿化、致密块状，向走向两端和倾向深部逐渐过渡为浸染状铅锌矿化、石英重晶石层。矿体(群)总体呈北西西走向，局部在矿体(群)中部呈北东走向的矿体厚大、品位较高，与北西西向断裂左行走滑派生出的北东向系列的小型断陷卤水盆地有关。在深部次火山岩持续提供热源及部分成矿物质的作用下，驱使大量的海水从图玛特泰加地层组双峰式酸性火山岩中浸出大量的成矿物质，并在喷流管道口附近及上盘的次级小型断陷卤水盆地内发生沉淀，形成多金属矿体。此成矿模式的明确不仅为理解区域地质构造提供了新见解，也对未来的矿产勘探活动具有重要指导意义。 |
| 英文摘要: |
| The Kyzyl Tashtek zinc polymetallic deposit belongs to the VMS deposit in the Early Paleozoic con.tinental margin arc environment of the Altai Sayanling Orogen, it has been developed into the deep undergroundmining stage. Its pipe type and mineralization zoning is relatively unclear. Based on the comprehensive analysis ofdrilling data and geological maps, combined with systematic geological research, this paper is to study the geologicalcharacteristics of the deposit and to build the mineralization model of the deposit. The bearing county rock is a bi.modal volcanic rock consisting of basalt rhyolitic tuff from the Lower Cambrian Formation, belonging to the bimodalacidic volcanic rock type VMS deposit. The deposit is controlled by a northwest linear pipe and has typical VMSmineralization zoning characteristics, including block shaped mineralization and layered zinc polymetallic mineral.ization in the upper part, and irregular vein shaped copper mineralization in the lower part. The copper ore body ex.ists in an irregular vein in the silicified (breccia) rock of the jet pipeline phase, the zinc polymetallic ore body oc.curs in the chlorite schist at the upper part of the jet pipeline, the mineralization type in the central swollen area islayered mineralization and dense block like, gradually transitioning into disseminated lead-zinc mineralization andquartz barite layers towards both ends and deeper dip. The overall trend of the ore body is northwest, and locally,the ore body in the middle of the ore body (group) is thick and high-grade, with a northeast trend. It is related to thesmall fault depression brine basin series generated by the left strike slip of the northwest trending fault.Under thecontinuous supply of heat and part of ore-forming materials by deep sub volcanic rocks, a large amount of seawateris driven to leach a large amount of ore-forming materials from the bimodal acidic volcanic rocks. Sedimentation oc.curs near the outlet of the pipe and in the sub-faulted brine basin on the hanging wall, forming polymetallic ore bod.ies. The clarification of this mineralization model not only provides new insights into regional geological structures,but also has important guiding significance for future mineral exploration activities. |
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