Basic characteristics and research progresses of intermediate sulfidation type epithermal gold poly-metallic deposits, and prospects
文献类型：期刊论文
| 作者 | Song GuoXue1,2; Qin KeZhang1,2; Li GuangMing1,2; Wang Le1,2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2018 |
| 卷号 | 34期号:3页码:748-762 |
| 关键词 | Epithermal Intermediate sulfidation type High sulfidation Low sulfidation Carbonate-base metals ore-forming system Sphalerite poor in iron Are porphyry metallogenic system |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Following the concept of epithermal gold deposits of high sulfidation (HS) and low sulfidation (LS) types deposits were suggested and ore-forming models were proposed since the 1980s, many epithermal deposits have been found. These deposits do not have the ore-forming characteristics of HS and LS type deposits, but have a transitional geological nature. Many researchers take them as a single type of epithermal deposit, which is defined as intermediate sulfidation (IS) type epithermal deposits. As a new type, is there a necessary to separate it from HS and LS epithermal deposits? What kind of geological feature does it has? These questions have puzzled most of the researchers, who engaged in the research work on epithermal Au and porphyry Cu deposits for a long time. This paper sums up the basic features and research progresses based on twenty-four IS-type epithermal deposits indentified so far in the world, and mainly focus on the temporal and spatial distribution, geological features, mineral assemblage characteristics, metal source, main differences to HS and LS type deposits. The IS-type epithermal deposits have six essential characteristics. Firstly, the development of a kind of ore system which is rich in carbonate and base metals. Carbonate mineral can be found in every stage of veins, and play a leading role in the last hydrothermal event. Base metals are in the form of sulfides of Cu, Pb, Zn, and Fe. Secondly, the development of intermediate sulfidation mineral assemblage: chalcopyrite, pyrite, galena, sphalerite, and tetrahedrite. A few alunite and adularia can also be found. Thirdly, most of the total content of suifides in ore-bearing veins is over 5%, especially rich in chalcopyrite. Fourthly, light color sphalerite which is poor in iron is well developed. Fifthly, this type of deposit is well developed around the porphyry type Cu-Au-Mo deposits under the background of island arc. Lastly, IS type deposits could coexist with HS and LS type deposits in the same ore system? Three world-renowned metallogenic province (Circum-Pacific metallogenic province, Paleoasian metallogenic province and Tethys-Himalayan metallogenic province), which were well developed with porphyry Cu -Au( Mo) deposits and epithermal-type deposits, have the favorable conditions for the formation of intermediate sulfidation type deposits. The future research needed to solve several key problems as below: (1) there is no detailed research work on the "rich carbonate-base metals (Cu, Pb, Zn, Fe, etc.)" ore-forming system. How does this kind of system form? Do the CO2, H2S and base metal elements in the fluid play an important role for migration and precipitation of Au? This problem is the key to know the formation mechanism of intermediate sulfidation type deposits. (2) what kinds of precipitating environment do the intermediate sulfidation minerals need? And are there differences of precipitating environment between the intermediate sulfidation, high sulfidation and low sulfidation minerals? (3) considering from the complexity of metallogenic system, mineralization process and mineral formation, it is too simple to take FeS (mol%) content in sphalerite as geological mark to identify intermediate sulfidation, high sulfidation and low sulfidation deposits. This opinion is inconsistent with the results of prior mineralogical studies on sphalerite, and therefore needs further work to confirm it. |
| WOS关键词 | HYDROTHERMAL ORE-DEPOSITS ; AG-AU MINERALIZATION ; PAPUA-NEW-GUINEA ; FLUID INCLUSIONS ; STABLE-ISOTOPE ; CO2-DOMINATED FLUIDS ; AUSTRALIA INSIGHTS ; SEMNAN PROVINCE ; SILVER DEPOSITS ; GREENSTONE-BELT |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000431890500014 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/88271]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Song GuoXue |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song GuoXue,Qin KeZhang,Li GuangMing,et al. Basic characteristics and research progresses of intermediate sulfidation type epithermal gold poly-metallic deposits, and prospects[J]. ACTA PETROLOGICA SINICA,2018,34(3):748-762. |
| APA | Song GuoXue,Qin KeZhang,Li GuangMing,&Wang Le.(2018).Basic characteristics and research progresses of intermediate sulfidation type epithermal gold poly-metallic deposits, and prospects.ACTA PETROLOGICA SINICA,34(3),748-762. |
| MLA | Song GuoXue,et al."Basic characteristics and research progresses of intermediate sulfidation type epithermal gold poly-metallic deposits, and prospects".ACTA PETROLOGICA SINICA 34.3(2018):748-762. |
入库方式： OAI收割
来源：地质与地球物理研究所
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