| 滇东北富锗银铅锌多金属矿集区矿床模型 |
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| 引用本文： | 韩润生,胡煜昭,王学琨,HOU Baohong,黄智龙,陈进,王峰,吴鹏,李波,王洪江,董英,雷丽.滇东北富锗银铅锌多金属矿集区矿床模型[J].地质学报,2012,86(2):280-294. |
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| 作者姓名： | 韩润生 胡煜昭 王学琨 HOU Baohong 黄智龙 陈进 王峰 吴鹏 李波 王洪江 董英 雷丽 |
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| 作者单位： | 昆明理工大学 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 滇东北富锗银铅锌多金属矿集区是扬子地块西南缘之川-滇-黔铅锌多金属成矿域的重要组成部分。矿床矿石品位特高、共(伴)生锗和银等组分多、矿体延深大、矿床规模大、经济价值巨大,该类矿床典型的地质特征反映了矿床成矿环境的特殊性,有别于国内外已知类型铅锌矿床(密西西比河谷型(MVT)、火山喷流沉积块状硫化物型(VHMS)、热水沉积型(SEDEX)等)的特性,提出了该类矿床是铅锌矿床的新类型——会泽型(HZT)铅锌矿床,其形成与海西晚期伸展环境与印支期造山挤压环境的构造体制转换有关,并建立了"构造-流体‘贯入’成矿"的矿床模型。矿床的形成过程大致经历了3个阶段:构造推覆—大规模流体运移;流体"贯入"—气液分异;流体卸载—重力分异成矿。该模型诠释了滇东北矿集区富锗银铅锌多金属铅锌矿床的成矿机理,无疑对川-滇-黔铅锌多金属成矿域的矿床研究与深部、外围的隐伏矿定位预测、勘查评价具有重要意义。
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| 关 键 词： | 会泽型(HZT)铅锌矿床模型 矿床典型特征 构造-流体“贯入”成矿 富锗铅锌矿床 滇东北矿集区 |
| 收稿时间： | 5/3/2011 12:00:00 AM |
| 修稿时间： | 2011/10/27 0:00:00 |
Mineralization Model of rich Ge-Ag-bearing Zn-Pb Polymetallic Deposit Concentrated District in Northeastern Yunnan, China |
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| HAN Runsheng,HU Yuzhao,WANG Xuekun,HOU Baohong,HUANG Zhilong,CHEN Jin,WANG Feng,WU Peng,LI Bo,WANG Hongjiang,DONG Ying and LEI Li.Mineralization Model of rich Ge-Ag-bearing Zn-Pb Polymetallic Deposit Concentrated District in Northeastern Yunnan, China[J].Acta Geologica Sinica,2012,86(2):280-294. |
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| Authors: | HAN Runsheng HU Yuzhao WANG Xuekun HOU Baohong HUANG Zhilong CHEN Jin WANG Feng WU Peng LI Bo WANG Hongjiang DONG Ying and LEI Li |
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| Institution: | Kunming University of Science and Technology |
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| Abstract: | The concentration district of germanium-silver-bearing lead-zinc polymetallic ore deposits of northeast Yunnan plays an important role in the formation of Sichuan - Yunnan - Guizhou lead-zinc polymetallic mineralization domain, which is located in the southwestern margin of the Yangtze block. The ore deposits are characterized by a number of important features: very high-grade of the ore deposits, containing many useful byproducts such as germanium and silver, deep extention of ore bodies, large scales of the ore deposits, and great economic significance. The special nature of ore-forming environment is indicated by the typical geological features of such ore deposits, which are different from known types of the lead-zinc deposits discovered in both China and overseas, such as Mississippi Valley Type (MVT), vocanic hosted massive sulphide type (VHMS) and hot water sedimentary type (SEDEX). It is suggested that these ore deposits are representative of a new transitional Pb-Zn deposit type of MVT type and orogenic type deposits - Huize type (HZT). The formation of these deposits was related to an transformation of the late Hercynian tectonic extension and Indosinian orogenic extrusion, which resulted in establishing a new mineralization model - \"structure - fluid 'penetration' mineralization\" model. The formation of such ore deposits has gone through three phases: A) trusting structure and large-scale fluid migration; B) fluid \"penetration\" and gas differentiated from liquid; C) fluid unloading and forming mineralization by gravity differentiation. This model can be used to interpret the mineralizing mechanism of the lead-zinc deposits occurred in the ore deposit concentration district of Northeast Yunnan, which is undoubtedly of great importance in studying Sichuan - Yunnan - Guizhou lead-zinc polymetallic metallogenic field, and in prediction, exploration and evaluation of concealed ore localization in the deep parts and external district of the deposits. |
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| Keywords: | Huize type (HZT) lead-zinc deposit model Typical characteristics of the deposits "Penetrated" mineralization of structure - fluid Rich germanium-Ag-bearing lead-zinc deposits Concentration district of ore deposits of Northeast Yunnan |
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