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| 1 | 安徽铜陵冬瓜山大型铜矿:海底喷流-沉积与矽卡岩化叠加复合成矿过程显示文摘冬瓜山铜矿是长江中下游成矿带铜陵矿集区内的一个大型铜矿。该矿床被惯称为矽卡岩型矿床,但具明显的层控特征。主矿体呈层状、似层状,赋存于上石炭统碳酸盐建造与下伏上泥盆统砂岩建造的接触带附近,主要由一系列层控块状含铜硫化物透镜体、含铜矽卡岩透镜体、磁铁矿矿囊以及层状含铜黄铁矿-蛇纹石矿席组成。主矿体的底部为根植于上泥盆统砂岩建造内的层控脉状-网脉状矿,下部为层状含铜黄铁矿+蛇纹石矿席,主体为块状含铜硫化物透镜体与上覆硬石膏层构成的三个硫化物-硫酸盐韵律单元。该'双层结构'特征总体类似于VMS和SEDEX型矿床,但矿石结构构造表明,这些硫化物-硫酸盐沉积均不同程度地遭受了后期热液-变质作用叠加改造。层控含铜矽卡岩通常发育于块状含铜硫化物透镜体之上,小型磁铁矿矿体或矿囊通常围绕陡倾的闪长岩株零星分布。这两类矿化均与燕山期岩浆活动(约137Ma)和石英二长闪长岩株侵位密切相关。矿区可见两种蚀变作用:石英-绢云母蚀变与矽卡岩蚀变。前者在下盘砂岩中形成似整合蚀变带,包裹层控网脉状矿,其成因可解释为晚石炭世热液流体在海底之下砂岩透水层内发生侧向迁移、弥散排泄及金属卸载;后者由燕山期石英二长闪长岩侵位引起,形成两类矽卡岩,其中,镁质矽卡岩发育在层状含铜黄铁矿-蛇纹石矿席,钙质矽卡岩形成层控含铜矽卡岩透镜体。冬瓜山矿床80件硫化物样品的硫同位素δ34S组成介于0.5‰~8.8‰之间,伴生的硬石膏δ34S介于14.8‰~20.5‰之间,暗示两者的热液S有不同的来源:弱变质的细粒层纹状硬石膏,硫同位素δ34S为20.5‰,表明S来源于晚石炭世海水硫酸盐;弱变质的胶状细粒黄铁矿,δ34S变化于1.3‰~5.5‰之间,反映了热液S来自于海水硫酸盐的生物还原;热变质的晶质黄铁矿,硫同位素组成随结晶程度和颗粒大小的增加而升高(平均δ34S:4.4‰→5.3‰→5.7‰),暗示热液S可能部分来自矽卡岩-岩浆热液系统。冬瓜山矿床的矿化结构、矿体形态、结构构造、流体包裹体特征以及热液蚀变带与铜矿体的空间分布表明,冬瓜山铜矿是两期成矿叠加复合的产物:晚石炭世海底喷流-沉积作用,形成块状含铜硫化物矿化体,晚侏罗世岩浆侵位诱发矽卡岩-热液系统,叠加改造早期块状含铜硫化物和硫酸盐,形成以矽卡岩铜矿为主体的叠合型矿床。 | 侯增谦 杨竹森 吕庆田 曾普胜 谢玉玲 蒙义峰 田世洪 徐文艺 李红阳 姜章平 王训成 姚孝德 | 2011 | 地质学报2011，85，5： | 40 |
| 2 | 安徽铜陵新桥矿床下盘矿化中黄铁矿Re-Os同位素定年:海底喷流沉积成矿的年代学证据显示文摘安徽铜陵新桥矿床主要由层状硫化物矿体组成,产于晚石炭世黄龙组底部由碎屑岩向碳酸盐岩过渡的部位.在层状矿体下盘围岩中发育细脉状、网脉状矿化.整合的层状硫化物矿体与下盘细脉-网脉状矿化共生是海底喷流沉积块状硫化物矿床的一个标志性特征.本文利用Re-Os同位素体系对新桥矿床下盘矿化中黄铁矿进行定年,得到的等时线年龄为319±13Ma(MSWD=16).该年龄与层状硫化物矿体的赋存层位基本吻合,为该矿床存在石炭纪喷流沉积成矿作用提供了新的年代学证据. | 郭维民 陆建军 蒋少涌 章荣清 漆亮 | 2011 | 科学通报2011，56，36： | 20 |
| 3 | Re-Os isotope dating of pyrite from the footwall mineralization zone of the Xinqiao deposit,Tongling,Anhui Province:Geochronological evidence for submarine exhalative sedimentation显示文摘The Xinqiao deposit is located in the Tongling area,Anhui Province.This deposit is dominantly composed of stratiform sulfide orebodies,which are restricted to the transitional zone from clastic rocks to carbonates at the base of the Late Carboniferous Huanglong Formation.There are discordant veinlets or networks of mineralization in the footwall rocks below the stratiform sulfide orebodies.The underlying discordant mineralization zones coexist with conformable stratiform sulfide orebodies,which are considered to be the most representative features of massive sulfide deposits formed by submarine exhalative sedimentation.This study reports a pyrite 187Re-187Os isotopic age of 319±13 Ma(MSWD=16) for the footwall mineralization zone.This isochron age is consistent with the interval of strata hosting the conformable stratiform sulfide orebody,and provides direct geochronological evidence for Carboniferous exhalative sedimentary mineralization. | GUO WeiMin LU JianJun JIANG ShaoYong ZHANG RongQing QI Liang | 2011 | Chinese Science Bulletin2011，56，35： | 11 |
| 4 | Yangshan Gold Deposit:The Largest Carlin and Carlin-like Type Gold Deposit in China显示文摘Gold Headquarter of the CAPF has discovered the Yangshan super large-scale gold deposit in Gansu Province,which is a great breakthrough of gold exploration and prospecting in Western Qiniing Mountains of China.The gold resources of this deposit achieved 308 tons with increasing potentials.Preliminary geological investigations indicate that the Yangshan gold deposit is located in the intra-continental collision orogenic belt;and the deposit was formed during the continent-continent collision orogenic processes.The geological characteristics of the deposit are similar to that of the typical Carlin-type gold deposits,while differences still exist.The ore-forming background is notably different from the Carlin gold deposit province in the United States;and the ore-forming fluids are similar with that of the orogenic-type gold deposit.Accordingly,the Yangshan gold deposit is a transitional type between the Carlin-type and the orogenic type gold deposits.At present,the Yangshan gold deposit is the largest Carlin and Carlin-like type gold deposit that is ever discovered in China. Researches on metallogeny,metallogenic model and ore-enrichment regularities of the Yangshan gold deposit are crucial to meet the pressing needs of the current geological investigation and ore exploration of the deposit. | YAN Fengzeng LI Qiangzhi | 2008 | Acta Geologica Sinica(English Edition)2008，82，4： | 10 |
| 5 | Palladium,Platinum and Gold Concentrations in Fengshan Porphyry Cu-Mo Deposit,Hubei Province,China显示文摘The Fengshan porphyry-skarn copper-molybdenum(Cu-Mo) deposit is located in the south-eastern Hubei Province in east China.Cu-Mo mineralization is hosted in the Fengshan granodiorite porphyry stock that intruded the Triassic Daye Formation carbonate rocks in the early Cretaceous(~140 Ma),as well as the contact zone between granodiorite porphyry stock and carbonate rocks,forming the porphyry-type and skarn-type association.The Fengshan granodiorite stock and the immediate country rocks are strongly fractured and intensely altered by hydrothermal fluids.In addition to intense skarn alteration,the prominent alteration types are potassic,phyllic,and propylitic,whereas argillation is less common.Mineralization occurs as veins,stock works,and disseminations,and the main ore minerals are chalcopyrite,pyrite,molybdenite,bornite,and magnetite.The contents of palladium,platinum and gold(Pd,Pt and Au) are determined in nine samples from fresh and mineralized granodiorite and different types of altered rocks.The results show that the Pd content is systematically higher than Pt,which is typical for porphyry ore deposits worldwide.The Pt content ranges from 0.037 to1.765 ppb,and the Pd content ranges between 0.165 and 17.979 ppb.Pd and Pt are more concentrated in porphyry mineralization than skarn mineralization,and have negative correlations with Au.The reconnaissance study presented here confirms the existence of Pd and Pt in the Fengshan porphyry-skarn Cu-Mo deposit.When compared with intracontinent and island arc geotectonic settings,the Pd,Pt,and Au contents in the Fengshan porphyry Cu-Mo deposit in the intracontinent is lower than the continental margin types and island are types.A combination of available data indicates that Pd and Pt were derived from oxidized alkaline magmas generated by the partial melting of an enriched mantle source. | WANG Minfang DENG Xiaodong BI Shijian LI Zhanke | 2009 | Acta Geologica Sinica(English Edition)2009，83，5： | 3 |
| 6 | 滇西镇康放羊山Pb-Zn-Cu多金属矿床地质特征及成因初探显示文摘放羊山Pb-Zn-Cu多金属矿床位于滇西保山地块南段,镇康复背斜南倾伏端芦子园矿集区内,是该矿集区近年来首个发现的以富铜为特征的铅锌多金属矿床。本文以放羊山矿床为研究对象,从放羊山矿区地层、构造、岩浆岩等矿区地质特征入手,详细研究了放羊山矿床矿体的产出分布、矿石组构及围岩蚀变等矿床地质特征,并将该矿床的成矿作用过程划分为热液期、叠加改造期和表生期。综合区域地质背景及矿床地质特征分析认为该矿床的形成受地层、岩性、构造和隐伏岩浆岩共同制约,为印支—燕山期强烈的挤压碰撞,地层强烈弯曲变形的构造背景下,深部隐伏岩浆出溶,含矿流体沿弯滑褶皱作用所引发的有利部位(如泥岩与灰岩的分界面等产生强烈的破碎变形部位)萃取、运移、汇聚并卸载成矿。属中温热液Pb-Zn-Cu多金属矿床,并被后期构造运动叠加改造。 | 耿齐卫 刘凤祥 周坤 邓明国 陈伟 | 2018 | 有色金属(矿山部分)2018，70，6： | 2 |
| 7 | 铜陵大团山铜(钼)矿床辉钼矿赋存状态及成因意义显示文摘大团山层状铜矿床中伴生有不同规模的钼矿体。钼矿主矿体赋存于角岩夹矽卡岩和黑色含钼碳质页岩中。矿石手标本中,矿石矿物的颗粒非常细小,难以靠肉眼或矿相显微镜进行鉴别。通过电子探针面扫描,发现钼主要以微小的鳞片状辉钼矿的形式,分布于穿插切割矽卡岩或碳质页岩的石英-方解石脉中。这类石英-方解石脉形成晚于矽卡岩或碳质页岩,通常与岩浆热液活动有关,故推断钼矿化主要与岩浆热液作用有关,辉钼矿Re-Os年龄代表着岩浆热液成矿作用的时代。 | 杨小男 徐兆文 王云健 | 2017 | 地球学报2017，38，2： | 1 |
| 8 | Deep Mineralization Background and Metallogenic Regularity of the Tongling Ore District显示文摘Based on the geological conditions and characteristics of mineralization present,three-dimensional geological modelling is used in conjunction with previous deep research results,in order to discuss the process of deep mineralization in the Tongling ore district.The structural analysis shows that surface deformation is strong,deep deformation is weak,the surface has mainly experienced brittle deformation,with the possibility of a large number of deep ductile deformations.There is a thrust nappe between the Tongling uplift and the Nanling basin,that is the boundary of the Tongling block,which has resulted in the southwest uplift of the Tongling block.Combined with the deep exploration data,the threedimensional shape of the main rock masses is interpreted,with three-layer structures in the deep magma chamber.The spatial distribution of magmatic rocks is mainly controlled by the structure.The movement of magmatic hydrothermal fluid is dominated by mesoscale seepage in the deep part and'dike'type upwelling in the shallow part.There is a certain coupling relationship between the ore-forming rock mass and the surrounding rock.The ore-forming age is dominated by the Yanshanian period.Based on the distribution,types and metallogenic characteristics of the deposits,the metallogenic model of'layer coupling'in the Tongling ore district is summarized,with the'one body,two belts and a multilayer metallogenic system'is established,which is significant for the future direction of deep prospecting in the Tongling area. | WAN Qiu DU Jianguo YANG Bo LAN Xueyi XIAO Xiao SHI Ke | 2020 | Acta Geologica Sinica(English Edition)2020，94，6： | 0 |
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