| 叶太平,王小娟,黄苑龄.贵州五指山铅锌矿田闪锌矿分散元素组成及其地质意义[J].矿产勘查,2019,(2):274-280 |
| 贵州五指山铅锌矿田闪锌矿分散元素组成及其地质意义 |
| Geological significance of dispersed elements composition in Sphalerite in the Wuzhishan lead-zinc ore field, Guizhou Province |
| 投稿时间：2018-01-14 |
| DOI： |
| 中文关键词: 五指山铅锌矿矿田 闪锌矿 分散元素 贵州 |
| 英文关键词: Wuzhishan lead-zinc ore field, sphalerate, dispersive element,Guizhou |
| 基金项目:中国地质调查局项目(编号:12120101700015000104)和贵州省地矿局地质科学研究项目(编号:黔地矿科合(2015)07号)联合资助。 |
|
| 摘要点击次数: 1418 |
| 全文下载次数: 697 |
| 中文摘要: |
| 五指山铅锌矿田是川滇黔成矿区贵州境内唯一大型铅锌矿床,从北东至南西,由杜家桥、那雍枝、新麦、那润和喻家坝5个矿段组成,以那雍枝铅锌矿段规模最大。文章通过电感耦合等离子体质谱(ICP-MS)分析矿石中原生矿石单矿物闪锌矿中分散元素含量,结果表明该矿床中闪锌矿的微量元素组成复杂,富集Ge(均值为144×10-6)、Ga(均值为102.9×10-6)和贫Mn(均值为66.83×10-6)、In(均值为0.937×10-6),其微量元素组成特征明显与夕卡岩型、喷流沉积型及岩浆热液型铅锌矿床不同,而其特征与川滇黔地区铅锌矿床(会泽和杉树林)中闪锌矿微量元素组成一致。该矿床闪锌矿富集Ge和Ga等低温成矿元素,其In/Ga比值中等,暗示其形成于中低温环境。结合矿床产出地质特征,认为五指山铅锌矿田成因与川滇黔地区铅锌矿床(会泽和杉树林)具有一致性。 |
| 英文摘要: |
| Maijiaqiao Pb-Zn deposit, Nayongzhi Pb-Zn deposit, Xinmai Pb-Zn deposit, Narui Pb-Zn deposit and Yujiaba Pb-Zn deposit belong to Wuzhishan lead-zinc ore field, witch is a large-sizelead-zinc deposit in Guizhou of Sichuan-Yunnan-Guizhou Pb-Zn mineralization province. Few researchs about the trace elements in the sphalerite had been carried out. By the ICP-MS, the trace elements of sphalerite had been tested in this paper. The results show that the sphalerite is rich in Ge (about 144×10-6), Ga (about 102.9×10-6) and poor in Mn (about 66.83×10-6), In (about 0.937×10-6), which is different clearly with that of skarn-type, SEDEX-type and magmatic hydrothermal-type, and its characteristics and the Sichuan Yunnan Guizhou lead-zinc deposit (Huize and Shanshulin) composition of trace elements in sphalerite consistent. Sphalerite enriches low temperature metallogenic elements such as Ge and Ga, and its In/Ga ratio is medium, suggesting that it is formed in medium and low temperature environment. According to the geological characteristics of the deposit, this paper holds that the genesis of the Five Fingers Group lead zinc ore field is consistent with the lead and zinc deposits (Huize and Shanshulin) in Sichuan-Yunnan-Guizhou Pb-Zn mineralization. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|