| 王宏伟.鹤庆锰矿小天井矿区微量元素特征与沉积成矿环境研究[J].地质与勘探,2013,49(2):257-264 |
| 鹤庆锰矿小天井矿区微量元素特征与沉积成矿环境研究 |
| Metallogenic Prognosis Based on Comprehensive Information in the Duolong Ore Concentration Area of the Bangonghu-Nujiang Metallogenic Belt ,Tibet |
| 投稿时间：2012-09-17 修订日期：2013-01-05 |
| DOI： |
| 中文关键词: 微量元素 因子分析 沉积环境 鹤庆锰矿 |
| 英文关键词: trace elements, factor analysis, sedimentary environment, Heqing manganese deposit |
| 基金项目:本文由全国危机矿山接替资源找矿项目(20089943)、国家自然科学基金(41101343)和昆明理工大学成矿动力学与隐伏矿预测创新团队( 2008)联合资助 |
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| 中文摘要: |
| [摘 要]小天井矿区是鹤庆锰矿储量最大开采最早的矿区，通过对该矿区含锰岩系的60个样品进行微量及稀土元素测试，运用相关分析、因子分析等多元统计方法分析和探讨微量及稀土元素的地球化学特征与锰矿的沉积环境关系，确定Mo、U、V、Mn、Zn为该矿区重要成矿元素组合，这对本区地球化学找矿中判别地层与构造的含矿性、推断隐伏矿体寻找接替资源具有重要意义。对Co/Ni、Sr/Ba、Th/U的分析，认为锰矿层物源主要是陆源，推测沉积环境为陆缘近海环境，并对该区锰的沉积成矿环境进行了进一步探讨。 |
| 英文摘要: |
| Abstract: The Xiaotianjing manganese deposit possesses the largest reserves, and is the earliest exploited mine in the Heqing area, Yunnan Province. This study collected 60 samples from the manganese-bearing rock series to conduct trace element and REE analysis, and discussed their characteristics and relationship to sedimentary environments. By using the multivariate statistical correlation analysis and factor analysis, this work found that the elements Mo, U, V, Mn and Zn constitute an important ore-forming element assemblage in the mining area. This is of great significance for discriminating ore potentialities of the strata and structures and determining concealed orebodies. Analysis of the Co/Ni, Sr/Ba, and Th/U suggests that the manganese layer materials were derived from terrigenous sources, and the depositional environment was an offshore continental margin. |
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