| 王昊.河南银洞沟银多金属矿床地球化学特征
与成矿机理初探[J].地质与勘探,2011,47(2):222-229 |
| 河南银洞沟银多金属矿床地球化学特征
与成矿机理初探 |
| A Tentative Study of Geological and Geochemical Characteristics and Ore-FormingMechanism of the Yindonggou Silver Polymetallic Deposit in Neixiang County,Henan Province |
| 投稿时间：2010-05-19 修订日期：2010-09-06 |
| DOI： |
| 中文关键词: 地球化学特征 成矿机理 银多金属矿床 银洞沟 河南内乡县 |
| 英文关键词: geological and geochemical characteristics,ore-forming mechanism,silver polymetallic deposit,Yindonggou,Neixiang county in Henan
province
8 |
| 基金项目:中国地质调查局国土资源大调查项目“河南省内乡-南召地区银铅锌矿评价冶(编号:20001020131)资助。 |
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| 摘要点击次数: 3113 |
| 全文下载次数: 1927 |
| 中文摘要: |
| [摘要]银洞沟银多金属矿是一个典型的碰撞造山带型脉状矿床,产出于北秦岭褶皱带二郎坪地
体早古生界二郎坪群(Pz1 er)内,是在二郎坪地体内所取得的重大找矿突破,具大型乃至超大型规模。
金属矿物以独立矿物(银金、辉银矿)、硫化物形式赋存,银、铅、锌共生关系密切。通过对矿床地质、铅同
位素、碳氢氧同位素、稀土元素和流体包裹体地球化学特征等的研究,认为该矿床的成矿物质来源于小
寨组地层并有松垛花岗岩浆活动的叠加,成矿热液主要来自变质水,混合了部分岩浆水、热卤水;成矿温
度为中温,矿床具明显的碰撞造山改造作用、变质热液、岩浆热液强烈叠加的造山型变质热液型矿床。 |
| 英文摘要: |
| Abstract:The Yindonggou silver polymetallic ore deposit is a typical vein-like collision orogenic type,which occurs in the Pzler Formation of early
Paleozoic in the North Qinling fold belt. It is a major breakthrough in prospecting of the Pzler terrane with a large or extremely large scale. Metallic minerals
consist of independent minerals such as silver-gold argentite and sulfide,with a coexisting relationship of sliver,lead and zinc. By analysis of geological and
geochemical characteristics,the mineralization mechanism of this deposit is explored in this paper. It is suggested that the ore-forming materials of the de鄄
posit stemmed from strata of the Xiaozhai Formation superimposed by the Songduo granite magma,and ore-forming thermal fluids came from metamorphic
water mixed partially with magma water and hot brine. The mineralization occurred at intermediate temperature. And the deposit has been obviously re鄄
formed by the collisional orogen. |
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