基于勘查区找矿预测理论与方法,对赣北石门寺超大型钨矿的钨多金属成矿作用进行了系统总结.细脉浸染型矿体的成矿地质体为燕山期斑状黑云母花岗岩,石英大脉型和热液隐爆角砾岩型矿体的成矿地质体为花岗斑岩.成矿构造为近EW向和NW向断裂构造.成矿结构面明确为斑状黑云母花岗岩与花岗闪长岩接触界面,其与似伟晶岩壳的分布大体一致,控制了大规模浸染状矿化的分布;花岗斑岩及隐爆角砾岩边部的成矿结构面则控制了大规模隐爆角砾岩型矿体.成矿作用蚀变特征标志为云英岩化、硅化、钾长石化、白云母化,其中云英岩化与钨矿化关系最密切.以上述认识为基础,建立了石门寺钨矿床的"三位一体"成矿预测地质模型,为指导花岗闪长岩大面积出露地区的找矿勘查工作提供了理论支撑.

在大量典型矿床剖析的基础上,以矿物学、岩石学、矿床学、构造地质学、地球化学等基础理论为指导,以大量实地观察和实验数据为支撑,通过总结矿山深部和外围找矿实践和典型矿床研究成果,按照成矿作用内因和外因相结合的辩证思维,成矿作用时间、空间、物质能量相统一的综合思维,以及元素地球化学分类和找矿预测矿床分类的比较思维,提出成矿地质体、成矿构造和成矿结构面、成矿作用特征标志等概念.成矿地质体是形成矿床主要矿产、决定主成矿阶段空间位置的成矿地质作用的实物载体,划分为沉积作用、火山作用、岩浆作用、变质作用和大型变形作用形成的 5 类成矿地质体.成矿结构面是赋存矿体的各类界面,包括构造界面、岩性界面、物理化学转换界面;成矿作用特征标志是能够直接指示矿体赋存位置和对找矿预测具有特殊意义的标志.依据成矿地质作用对中国主要矿床类型进行梳理划分,归纳总结了主要矿床类型的地质特征,构建了反映矿体赋存位置的成矿地质体-成矿结构面-成矿作用特征标志"三位一体"找矿预测地质模型.在此基础上,提出勘查区找矿预测的工作方法,对矿床学研究、找矿预测、矿产勘查工作具有重要的指导意义.

红岭钨矿床位于大东山-贵东岩浆岩带的南侧,产于燕山早期热水复式岩体的中部.在红岭钨矿区出露中细粒斑状黑云母花岗岩、细粒黑云母花岗岩和中细粒白云母花岗岩.三种花岗岩 SiO2 含量为 71.08%～75.53%,Na2O+K2O 含量和A/CNK值分别介于 7.50%～9.13%和 0.97～1.42 之间.其中斑状黑云母花岗岩和黑云母花岗岩属于过铝质花岗岩,而白云母花岗岩A/CNK＞1.1,属于强过铝质花岗岩.锆石U-Pb年代学显示,黑云母花岗岩的年龄为 161.6±1.3 Ma,白云母花岗岩的年龄为 162.0±1.7 Ma,两者误差范围内一致,说明是同一岩浆活动的产物.同位素地球化学数据显示,三种花岗岩具有相似的Sr-Nd同位素组成,它们Sr同位素初始比值为 0.7087～0.7214,εNd(t)值为-15.9～-13.8,两阶段 Nd模式年龄介于 2065～2232 Ma之间,暗示成岩物质来自古元古代地层的重熔.元素地球化学研究显示,斑状黑云母花岗岩和黑云母花岗岩Nb/Ta值明显大于 5,Zr/Hf＞25,Y/Ho值＜28;而晚期白云母花岗岩Nb/Ta值明显小于 5,Zr/Hf＜25 值,Y/Ho＞28.因此,红岭钨矿区三种花岗岩是同一 S 型花岗质岩浆不同演化阶段的产物,由早期到晚期花岗质岩浆挥发分的饱和程度逐增加,而含矿的细粒白云母花岗岩则是晚期富挥发分残余岩浆固结的产物.岩浆晚期阶段,挥发分的高度聚集可能是导致钨超常富集的关键因素.

MVT铅锌矿床和会泽型(HZT)铅锌矿床是全球最重要的铅锌矿床类型之一,其中大型矿床数量和铅锌金属储量均居于重要地位.基于勘查区找矿预测理论与方法,从"时间、空间、物质及其演化"四要素出发,厘定MVT铅锌矿床的成矿地质作用和成矿地质体,总结成矿结构面类型和矿化样式,概括成矿流体作用特征标志,并进一步揭示经典的MVT铅锌矿床"三位一体"的成矿规律:矿床产于前陆盆地地堑式构造带、不整合面上发育的溶塌角砾岩岩相组合、成矿正断层破碎带、区域性热卤水活动的"硅-钙面"成矿结构面中.在此基础上,综合构建经典的MVT铅锌矿床找矿预测地质模型:通过前陆盆地地堑式构造带研究确定勘查区找矿方向,通过成矿结构面研究判断矿体空间位置及其产状,硅-钙面等特征是判断矿床(体)存在的成矿流体作用标志.其勘查应用流程进一步概括为:看、查、识、厘、析、填、测、比、探、勘.该研究对同类矿床成矿规律研究和找矿预测评价具有启示意义.

The Baiyinchagan deposit is a newly discovered large-scale Sn polymetallic deposit in the southern Great Xing'an Range. Geological, geochemical, fluorite and quartz porphyry Sr-Nd and sulfide S-Pb isotopic data are used in this paper to address the relationship between Sn and Ag-Pb-Zn mineralizations of the deposit. Sr-Nd isotopic compositions show that all the quartz porphyry and fluorite samples have similar range of (Sr-87/Sr-86)(i), (Nd-143/Nd-144)(i) and epsilon(Nd) (t) values, indicating that fluorite is associated with quartz porphyry, and its ore-forming fluid is derived from the magma of the quartz porphyry. Sulfur isotopic data demonstrate that Ag-Pb-Zn ores of the No. I area (delta S-34 = -13.9 parts per thousand similar to -4.8 parts per thousand) and Sn ores of the No. III area of the deposit (delta S-34 = -12.5 parts per thousand similar to -5.3 parts per thousand) have similar range of delta S-34 values, and sphalerite (delta S-34 = - 12.4 parts per thousand similar to - 7.3 parts per thousand, mean - 9.2 parts per thousand) and "Zn-F-B aggregates" in quartz porphyry (es = -10. 6%o -9. 0%c, mean -9. 7%c) also have a same range of in-situ es values, suggesting that the magma of quartz porphyry is the main source for sulfur. Pb isotopic data show that the Ag-Pb-Zn ores of the No. I area (Pb-206/Pb-204 = 18.177 similar to 18. 200, (207)pb/Pb-204 = 15.519 similar to 15.531, Pb-208/Pb-204 = 37.985 similar to 38.053) have similar Pb compositions to those of quartz porphyry (Pb-206/Pb-204 = 18.206 similar to 18.235, Pb-207/Pb-204 = 15.529 similar to 15.530, Pb-208/Pb-204 = 38.025 similar to 38.036), indicating that Pb of the Ag-Pb-Zn mineralization was from magma of quartz porphyry. The geological, Sr-Nd and S, Pb isotopic evidence show that the Baiyinchagan Sn mineralization and Ag-Pb-Zn mineralization are genetically related to each other and their ore-forming fluids and materials were derived from the magma of quartz porphyry.

宁镇矿集区位于长江中下游成矿带东部,发育了大量与Cu、Fe矿产有关的中酸性侵入岩,如区内安基山岩体和韦岗岩体分别与安基山铜矿及伏牛山铜矿、韦岗铁矿等Cu、Fe矿床成矿关系密切.尽管前人在宁镇矿集区开展了大量的岩石学工作,但是对这些花岗质岩石源区特征方面的研究却略显薄弱.本文对该矿集区内的安基山岩体和韦岗岩体开展了详细的LA-ICP-MS锆石U-Pb测年和锆石Hf同位素研究,进而确定成岩年龄、探讨岩浆源区性质及与成矿作用的关系.锆石U-Pb定年结果显示区内安基山花岗闪长斑岩和韦岗花岗闪长岩成岩年龄分别为108.9～110.9Ma和107.3～109.6Ma,宁镇矿集区晚中生代岩浆岩的成岩时代在110～100Ma之间,明显晚于长江中下游其他矿集区成岩时代范围近20 Ma.两个岩体的锆石Hf同位素研究显示,韦岗花岗闪长岩的εHf(t)值为-47.4～-16.9,平均为-24.9,二阶段Hf模式年龄(TDM2)为2.24～4.14 Ga,平均为2.73 Ga,可能是中太古代至古元古代下地壳部分熔融形成的;而安基山花岗闪长斑岩的εHf (t)值为-16.8～-8.9,平均为-12.4,二阶段Hf模式年龄(TDM2)为1.74～2.23 Ga,平均为1.96Ga,可能是富集岩石圈地幔物质与下地壳物质混合的产物.本文研究结果结合前人研究显示,矽卡岩型Fe矿床有关的岩体相比于矽卡岩型Cu矿床成矿岩体含有更多的地壳物质;岩浆源区壳、幔物质含量比例可能是控制长江中下游成矿带Cu、Fe成矿作用的重要因素.

The Jiande copper deposit is located in the Qin-Hang metallogenic belt, South China. The deposit is dominated by “stratiform-like” ores, which are hosted in the dolomite of the Upper Carboniferous Huanglong Formation. These ore bodies were previously proposed to be Carboniferous sedimentary exhalative (Sedex) style mineralization, but they also appear to be related to the Late Mesozoic granodiorite porphyry at Jiande. Three stages of mineralization can be observed. The prograde skarn minerals garnet and diopside were formed in the pre-ore stage. The “stratiform-like” ores, with minor quartz-polymetallic veins, were formed in the main mineralization stage. The post-ore stage is characterized by quartz-calcite ± pyrite veins. Fluid inclusions in quartz from the pre-ore skarn, the main stage of mineralization, and post-ore quartz–calcite ± pyrite veins were studied. Fluid inclusion petrography shows that two-phase liquid-rich (Type I), two-phase vapor-rich (Type II), and halite-bearing (Type III) fluid inclusions can be identified in the studied hydrothermal quartz samples. Primary Type II and Type III fluid inclusions only occur in quartz from the the main stage, whereas Type I fluid inclusions are present in all three stages of hydrothermal quartz.Type I fluid inclusions in pre-ore stage have homogenization temperatures of 290-368°C and salinities of 2.6-8.8 wt.% NaCl equiv. Type II and coexisting Type III fluid inclusions in the main stage share similar homogenization temperatures of 293 to 334 °C and 290 to 326 °C,but have two contrasting salinity ranges of 1.2 to 2.2 wt.% and 31.87 to 38.16 wt.% NaCl equiv, respectively. The coexistence of Type II and Type III fluid inclusions and their similar homogenization temperatures but contrasting salinities suggest that fluid boiling processes occurred. Type I fluid inclusions in the post-ore quartz–calcite veins have homogenization temperatures of 202-278 °C and salinities of 0.2-6.5 wt.% NaCl equiv. The hydrogen and oxygen isotopes (δD ranges from -78 ‰ to -61 ‰, δ 18 OH 2 O calculated from quartz are from 8.1 ‰ to 10.6 ‰) of fluid inclusions in quartz imply that ore fluids were principally derived from magmatic water. The lead isotopes of sulfide from the ores are close to the orogenic Pb evolution curve and are also similar to those of the Jiande Jurassic igneous rocks, suggesting that the metals were sourced mostly from the Jurassic igneous rocks. The skarn alteration, inferred boiling fluid inclusion assemblages, stable isotopic features of magmatic fluids, and metal source imply that the main stages of mineralization in the Jiande polymetallic copper deposit is of skarn-type, related to Jurassic granodiorites.

The Jiande copper deposit is located in the northeast part of Qinzhou-Hangzhou suture belt between Yangtze and Cathaysia blocks, and it is one of the largest copper deposits in Zhejiang Province, China. The genesis of the Jiande copper deposit is still hotly debated. The aim of this paper is to present new field observations, fluid inclusions, H-O-S isotope data to constrain the metallogenic mechanism and ore genesis of the Jiande copper deposit. Based on petrographic observations of ore-bearing quartz collected from the massive ores, primary inclusions of the Jiande deposit have three types:two-phase liquid-rich (type III), two-phase vapor-rich (type III), and halite-bearing (type III) fluid inclusions. Type II inclusions occur widely in the Jiande deposit, and show homogenization temperatures of 280 similar to 340 degrees and salinities of 0.63%similar to 8.00% NaCleqv. Type II and type III inclusions primarily coexist in the ore veins. Homogenization temperatures of type ? and type II reveal peaks at 296 similar to 334 degrees and 290 similar to 326 degrees respectively, and their salinities at 1.22%similar to 2.00% NaCleqv and 31.87%similar to 38.16% NaCleqv, respectively. It indicates that fluid boiling process took place, and metal precipitation probably induced by extensive fluid boiling events during the ore stage. Hydrogen and Oxygen isotopic compositions are also within the range of magmatic water. delta S-34 of sulfides show positive values within a narrow range, close to zero in average, which points to a magmatic source. Based on geological observations, fluid inclusions, and H-O-S isotope data, the Jiande copper deposit is interpreted as a magmatic-hydrothermal deposit which is determined by "Calcium-Silicon Interface".

The Qixiashan Pb-Zn polymetallic deposit is located in the Nanjing-Zhenjiang are a in Jiangsu Province of the Middle and Lower Yangtze River metallogenic belt, which is one of the largest lead-zinc deposits in the eastern China. Although much progress in ore-prospecting at the depth of Qixiashan deposit has been achieved in the last recent years, the genesis of this deposit is still controversial. Based on detailed field geological survey, we collect systematically samples at the depth of this deposit. Through the analyses and interpretations of fluid inclusions from different ore-forming stages and H-O-S-Pb isotopic systems, we constrain the origin of this deposit to lay the foundation of ore-prospecting at this deposit and region. Based on petrographic observations, primary inclusions of the Qixiashan deposit primarily belong to two types: two-phase liquid-vapor and liquid-only fluid inclusions. Fluid inclusions occurred in the quartz-magnetite phase (I) of main ore-forming stage show homogenization temperatures of 280 similar to 380 degrees C and salinities of 4.24% similar to 9. 86% NaCleqv. Fluid inclusions occurred in the quartz-sulfide phase (II) show homogenization temperatures of 180 similar to 320 degrees C and salinities of 1.74% similar to 8.00% NaCleqv-Fluid inclusions occurred in the quartz-carbonate phase (III) of main ore-forming stage show homogenization temperatures of 80 similar to 160 degrees C and salinities of 0. 53% similar to 6. 74% NaCleqv. From the first (I) to the third (III) phase, the homogenization temperatures and salinities of the fluid inclusions all had a reduced tendency, showing the characteristics of fluid mixing, which may be the mechanism of the precipitation of ore-forming metals. Hydrogen and oxygen isotopic results (delta O-18(H2O): -1. 9% similar to 5. 5%, delta D: -80. 3% similar to-69. 9%) indicate that ore-forming fluids are magmatic fluids with meteoric water mixing at the later period. The delta S-34 values of sulfides vary from -4. 6% to 3. 8%, close to zero in average, which indicate that sulfur of the sulfide stem from the magmatic source with parts of contribution from the ore-bearing strata sulfide. The Pb-206/Pb-204, Pb-207/Pb-204 and Pb-208/Pb-204 values of sulfide ores range from 17. 616 to 17. 817, 15. 513 to 15. 718 and 15. 513 to 15. 718, respectively. The Pb isotope results indicate that Pb mainly stems from magmatic source with parts of contribution from Sinian system Pb. Based on ore-forming geological characteristics, fluid inclusions, and H-O-S-Pb isotope, the mineralization of Qixiashan deposit is closely related to the Early Cretaceous Yanshanian magmatism, it is interpreted as a magmatic hydrothermal deposit which is mainly determined by the Calcium-Silicon Interface between Carboniferous limestone of Huanglong Formation and sandstone of Gaolishan Formation.

The assessment of the mineral resources by the China National Mineral Assessment Initiative was completed between 2007 and 2013. The initiative's aim is to compile mineral prospectivity maps and estimate the total (known and unknown) resources available and mineral types for 25 of the most prospective strategic minerals located in China. The project includes the construction of deposit models applied to various types of mineralisation, such as supergene, sedimentary, and hydrothermal mineralisation. The "Integrated information assessment" methods based on the "deposit model" approach was developed and is introduced in this contribution. Eighty mineral deposit models have been developed, documented, and included in a geographic information system (GIS). The models are applied to at least 1000 known deposits in China, and are used to calculate the geological parameters for and statistics of multiple spatial datasets for mineral deposits at a regional scale of 1:200,000. The initiative will be expanded in the future to an assessment of China's mineral potential to a minimum depth of < 2000 m in anticipation of an increased demand for minerals in the future.

The Baiyinchagan deposit located in the Xi Ujimqin Banner, Inner Mongolia, is a newly discovered large-scale Sn polymetallic deposit in the southern Great Xing'an Range. In this paper, new LA-ICP-MS zircon U-Pb ages for quartz porphyry from the deposit are firstly presented, which show that the emplacement ages of the quartz porphyry are 141.7 +/- 0.8Ma and 140.2 +/- 1.1Ma. These ages are consistent with those of granitic intrusions associated with other Sn polymetallic deposits in the southern Great Xing'an Range, indicating that Early Cretaceous is an important period for Sn mineralization-related magmatism. Geochemically, quartz porphyry has high concentrations of SiO2 (70.99%similar to 76.98%), FeOT/(FeOT+MgO) (0.90 similar to 0.97), FeOT/MgO (9.45 similar to 36.3), 10000xGa/Al (5.9 similar to 8.2) and low contents of MgO (0.13%similar to 0.18%), TiO2 (0.10%similar to 0.12%) and P2O5 (0.02%similar to 0.03%), with enrichment of light rare earth elements and distinctly negative dEu anomalies. The rock is characterized by high contents of Rb, U, Ta, Nd and Hf, and low contents of Ba, K, Sr, P and Ti. These features indicate that the Baiyinchagan quartz porphyry belongs to A-type granite. The quartz porphyry has relatively high eNd(t) (+3.6 similar to+3.8) and eHf(t) (+8.2 similar to+11.6) values and young two-stage Nd and Hf model ages (t(NdDM2)=0.63 similar to 0.62Ga; t(HfDM2)=0.67 similar to 0.45Ga, respectively), suggesting that the rock was dominantly derived from the partial melting of a juvenile lower crust, followed by fractional crystallization during magma ascent. The geological, elemental and isotopic evidence show that Sn mineralization-related granitoids in the southern Great Xing'an Range characterized by the involvement of significant amounts of mantle-derived juvenile crustal components into the magma source were associated with lithospheric thinning induced by asthenospheric upwelling during Late Mesozoic.

Jiande copper deposit in Zhejiang Province was found in the 1960, and it is located in the northeastern part of Qinzhou-Hangzhou suture belt between Yangtze and Cathaysia blocks. Research about ore-forming fluids on it is still lacking. This study made a systematic investigation of fluid inclusions in the Jiande copper deposit. Based on petrographic observations of ore-bearing quartz collected from the massive ores, there are three types of primary inclusions of Jiande deposit:two-phase liquid-rich (type Ⅰ), two-phase vapor-rich (type Ⅱ), and halite-bearing (type Ⅲ) fluid inclusions. Type Ⅰ inclusions occur widely in the Jiande deposit and show homogenization temperatures of 220~377℃ and salinities of 0.63~8.00 wt.%NaCl equivalent. Type Ⅱ and type Ⅲ inclusions primarily coexist in ore veins. Homogenization temperatures of type Ⅱ and type Ⅲ reveal peak temperatures at 296~334℃and 290~326℃, respectively, and their salinities at 1.22~2.00 wt.%NaCl and 31.87~38.16 wt.%NaCl, respectively. The results indicate that fluid boiling process took place, and metal precipitation was probably induced by extensive fluid boiling events during the ore stage. Raman analysis of fluid inclusions indicates that, in the gaseous phase, water is dominant with small amount of CO2, CH4, and N2. Our study suggests that the Jiangde copper deposit is a Yanshanian Skarn deposit rather than a Hycernian Sedex Cu deposit.

地勘队伍体制改革,催生了中国地质调查局的诞生 1998年3月,国土资源部成立后,我成为第一任储量司司长.此时,组建中国地质调查局的事情也很快进入议事日程,并成立了筹备组,由他们推进中国地质调查局的组建工作. 由于定位不准,加上与财政部沟通不畅,直到1999年6月,地调局还没有建立起来,而且全国地质工作经费也发生了问题,这直接造成了这一年全国地质工作难以正常开展的局面.

The Dahutang tungsten polymetallic ore field is located north of the Nanling W–Sn polymetallic metallogenic belt and south of the Middle–Lower Yangtze River Valley Cu–Mo–Au–Fe porphyry‐skarn belt. It is a newly discovered ore field, and probably represents the largest tungsten mineralization district in the world. The Shimensi deposit is one of the mineral deposits in the Dahutang ore field, and is associated with Yanshanian granites intruding into a Neoproterozoic granodiorite batholith. On the basis of geologic studies, this paper presents new petrographic, microthermometric, laser Raman spectroscopic and hydrogen and oxygen isotopic studies of fluid inclusions from the Shimensi deposit. The results show that there are three types of fluid inclusions in quartz from various mineralization stages: liquid‐rich two‐phase fluid inclusions, vapor‐rich two‐phase fluid inclusions, and three‐phase fluid inclusions containing a solid crystal, with the vast majority being liquid‐rich two‐phase fluid inclusions. In addition, melt and melt‐fluid inclusions were also found in quartz from pegmatoid bodies in the margin of the Yanshanian intrusion. The homogenization temperatures of liquid‐rich two‐phase fluid inclusions in quartz range from 162 to 363°C and salinities are 0.5wt%–9.5wt% NaCl equivalent. From the early to late mineralization stages, with the decreasing of the homogenization temperature, the salinity also shows a decreasing trend. The ore‐forming fluids can be approximated by a NaCl–H2O fluid system, with small amounts of volatile components including CO2, CH4 and N2, as suggested by Laser Raman spectroscopic analyses. The hydrogen and oxygen isotope data show that δDV.SMOW values of bulk fluid inclusions in quartz from various mineralization stages vary from –63.8‰ to –108.4‰, and the δ18OH2O values calculated from the δ18OV‐SMOW values of quartz vary from –2.28‰ to –7.21‰. These H–O isotopic data are interpreted to indicate that the ore‐forming fluids are mainly composed of magmatic water in the early stage, and meteoric water was added and participated in mineralization in the late stage. Integrating the geological characteristics and analytical data, we propose that the ore‐forming fluids of the Shimensi deposit were mainly derived from Yanshanian granitic magma, the evolution of which resulted in highly differentiated melt, as recorded by melt and melt‐fluid inclusions in pegmatoid quartz, and high concentrations of metals in the fluids. Cooling of the ore‐forming fluids and mixing with meteoric water may be the key factors that led to mineralization in the Dahutang tungsten polymetallic ore field.

The ferriferous silicalites in the Zheyaoshan ore district occur in sedimentary discontinuity interface between the ore-bear-ing rock series (quartz keratophyre taff) and the upper rock system, and are composed mainly of fine-crystalline quartz and hematite, which account for more than 90%, with a small amount of silk mica, feldspar, sodium chlorite etc. The ferriferous silicalites are charac-terized by low TiO2 and A12O3 as well as high ore-forming elements (Fe, Cu, Pb, Zn). Through the calculation of Al/(Al+Fe+Mn) ratio, the characteristics of hydrothermal sedimentary rock were displayed. In the Fe-Mn-Al triangular diagram, Fe-Mn-(Cu+Co+Ni)×10 triangular diagram and Zr-Cr diagram, the ferriferous silicalites in this area are located in the hydrothermal sedimentary rock area, the total REE of ferriferous silicalites is very low, and the north American shale standardization distribution pattern is a right-oblique curve with weak negative Eu anomaly or positive Eu anomaly as well as weak negative Ce anomaly. The ω(MnO)/ω(TiO2) ratio of part of the samples is somewhat smaller, U/Th ratio is larger, Al2O3 content is higher, with a negative Eu anomaly, in-dicating that the addition of normal sedimentary silicalite ingredients. Combined with the geological background of ferriferous sili-calites and rare earth elements of ore-bearing rock series (quartz keratophyre tuff) and mineralized quartz, the authors hold that the provenance of ferriferous silicalites was mainly derived from quartz keratophyre tuff and belonged to the abiogenic type related to vol-canism, and this can be regarded as an important prospecting criterion in the orefield.

文章主要从找矿预测角度较系统梳理了我国常见的(金属)矿床类型,讨论了矿床类型与成矿地质作用和成矿地质体的关系.将我国主要成矿地质作用分为沉积地质作用、火山地质作用、侵入岩浆地质作用、变质地质作用、大型变形地质作用以及复合/叠加地质作用6类,并进一步划分出16个成矿地质作用亚类,共32种常见矿床类型.对每一类成矿地质作用和矿床类型的含义和特点进行了解释和说明.

Acta Geologica Sinica - English EditionVolume 88, Issue s2 p. 1124-1125 Meeting Abstracts Characteristics and Process of Ore-forming Fluids of the Kangjiawan Pb-Zn-Au-Ag Deposit, Hunan Province, China Yongsheng LI, Corresponding Author Yongsheng LI Development Research Center, China Geological Survey, Beijing 100037 China Technology Guiding Center of Mineral Prospecting, Ministry of Land and Resource, Beijing 100120 China Science and mineral resource, China university of Geosciences, Beijing 100083 ChinaCorresponding author. E-mail: zzkclys@126.comSearch for more papers by this authorTianzhu YE, Tianzhu YE Development Research Center, China Geological Survey, Beijing 100037 ChinaSearch for more papers by this authorShimin ZHEN, Shimin ZHEN Development Research Center, China Geological Survey, Beijing 100037 China Technology Guiding Center of Mineral Prospecting, Ministry of Land and Resource, Beijing 100120 ChinaSearch for more papers by this authorFanying GONG, Fanying GONG Development Research Center, China Geological Survey, Beijing 100037 China Technology Guiding Center of Mineral Prospecting, Ministry of Land and Resource, Beijing 100120 ChinaSearch for more papers by this authorXiaodong GONG, Xiaodong GONG Science and mineral resource, China university of Geosciences, Beijing 100083 ChinaSearch for more papers by this author Yongsheng LI, Corresponding Author Yongsheng LI Development Research Center, China Geological Survey, Beijing 100037 China Technology Guiding Center of Mineral Prospecting, Ministry of Land and Resource, Beijing 100120 China Science and mineral resource, China university of Geosciences, Beijing 100083 ChinaCorresponding author. E-mail: zzkclys@126.comSearch for more papers by this authorTianzhu YE, Tianzhu YE Development Research Center, China Geological Survey, Beijing 100037 ChinaSearch for more papers by this authorShimin ZHEN, Shimin ZHEN Development Research Center, China Geological Survey, Beijing 100037 China Technology Guiding Center of Mineral Prospecting, Ministry of Land and Resource, Beijing 100120 ChinaSearch for more papers by this authorFanying GONG, Fanying GONG Development Research Center, China Geological Survey, Beijing 100037 China Technology Guiding Center of Mineral Prospecting, Ministry of Land and Resource, Beijing 100120 ChinaSearch for more papers by this authorXiaodong GONG, Xiaodong GONG Science and mineral resource, China university of Geosciences, Beijing 100083 ChinaSearch for more papers by this author First published: 29 December 2014 https://doi.org/10.1111/1755-6724.12379_32Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume88, Issues2Special Issue: Meeting Abstracts: The 14th Quadrennial International Association on the Genesis of Ore Deposits Symposium. August 19–22, 2014, Kunming, ChinaDecember 2014Pages 1124-1125 RelatedInformation

The Baiyinchang mine-field is located in the east of massive sulfide deposits metallogenic province in Qilian Mountain area.The orebody is hosted in early-middle Cambrian assemblage of baschtauite and spilite.According to the study on the metallogenic fluid characteristic from the vein orebody at the footwall of Zheyaoshan deposit,this paper discusses the metallogenic mechanism,the nature and origin of ore-forming fluid.The petrography and mi-crothermometric results of fluid inclusions in ore-bearing quartz show the inclusion types are liquid inclusion,gase-ous inclusion,pure gaseous inclusion,CO2-bearing three-phase inclusion and pure CO2 inclusion.Respectively,the homogenization temperature of the first stage inclusions is concentrated between 201 ~ 413℃ while the salinity (NaCl)is on 1 .43%~13.40%,as of the second stage inclusions is concentrated between 21 7~428℃ while the sa-linity (NaCl)is on 1 .91 %~1 1 .93%.The composition in fluid inclusions indicates that the gases in fluid inclusions are chiefly composed of H2 O,and the secondary components are CH4 ,CO2 .The cations inclusions are dominanted by Na+ while the anions by Cl- .The ore-forming system is H2 O-NaCl-CO2-CH4 system.The ore-forming fluid from the footwall vein orebody of Zheyaoshan deposit is the mixture of magmatic fluid and the heated sea water, and the ore-forming material derives from mixing of fluids.

The Jiama deposit is a superlarge copper-polymetallic deposit in Gangdise metallogenic belt in Tibet, and its main skarn type orebody is distributed along the interface between Early Cretaceous Linbuzong Formation hornfels(salic) and Late Jurassic Duodigou Formation marble(calc). Based on the zonation of skarn between the Si- Ca interface, the authors studied petrological geochemistry and mineral chemistry of skarns in different zones, with the purpose of studying the effect of Si-Ca interface on the formation of skarn and orebody. It is shown that the values of Si O2 and Ca O increase and the values of Al2O3 and TFe decrease downwards from garnet skarn through garnet wollastonite skarn to wollastonite skarn along the interface belt. The rare and trace elements geochemical characteristics of garnet skarn and wollastonite skarn are restricted by hornfels and marble respectively.Garnets within skarn near the roof of the Si-Ca interface are transition series between grossular and allochroite, in which values of Al decrease and values of Fe increase from core outwards, while garnets within skarn near the bottom of the interface have more Fe values and less Al content than the former garnet series, in which values of Al and Fe change a bit from core outwards. Skarns are hydrothermal reaction products through alteration of salic and calc rocks. Fluid decompression boiling and groundwater mixing along the Si- Ca interface and vertical fluid geochemical barrier along the interface belt seem to have been the main factors influencing orebody formation in the Jiama deposit. The difference of chemistry and physical characteristics between salic and calc rocks had important effect on the ore- forming process along Si- Ca interface. The interface overlap extension structure and magmatic thermal event that increased permeability from roof to bottom along the interface belt contributed to the scale increase and grade enrichment of the orebody.