...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Minerals >Trace Element Geochemistry of Magnetite: Implications for Ore Genesis of the Huanggangliang Sn-Fe Deposit, Inner Mongolia, Northeastern China
【24h】

Trace Element Geochemistry of Magnetite: Implications for Ore Genesis of the Huanggangliang Sn-Fe Deposit, Inner Mongolia, Northeastern China

机译：磁铁矿的微量元素地球化学：内蒙古黄冈梁锡铁矿床成矿意义

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Huanggangliang deposit is a super-large Sn-Fe deposit in the Huanggangliang–Ganzhuermiao metallogenic belt in the southern section of the Great Hinggan Range. The Sn-Fe deposits mainly occur in the skarn contact zone and were formed via the interaction of biotite-bearing alkali feldspar granite with limestone strata of the Permian Dashizhai and Zhesi Formations. Based on the intersecting relations among the ore-bearing veins and the different types of mineral assemblages within these veins, the Sn-Fe mineralization could be divided into two periods and four stages: the skarn period, which includes the garnet–diopside–magnetite (T1) stage (stage 1) and epidote–idocrase–cassiterite–magnetite (T2) stage (stage 2); and the quartz–magnetite period, which can be divided into the quartz–cassiterite–magnetite (T3) stage (stage 3) and quartz–magnetite (T4) stage (stage 4). In this paper, we discuss the genesis of magnetite, controlling factors for magnetite compositions, and type of ore genesis based on petrographic studies and LA-ICP-MS analyses of trace elements in these four types of magnetite from the Huanggangliang Sn-Fe deposit. The results demonstrate that the four types of magnetite are generally depleted in Ti (0.002–3.030 wt %), Al (0.008–1.731 wt %), and Zr (1.610 ppm). In addition, the low Ni and Cr contents and relatively high and stable Fe contents in the four types of magnetite are indicative of hydrothermal genetic features. Compositions of the ore fluids and host rocks, formation of coexisting minerals, and other physical and chemical parameters (such as f O 2 ) may have influenced the variable magnetite geochemistry in the different Huanggangliang ore types, with fluid compositions and f O 2 probably playing the most important roles. The geological, petrographic, and geochemical characteristics of magnetite of the Huanggangliang Sn-Fe deposit lead us to conclude that the deposit is a skarn-type Sn-Fe deposit associated with Yanshanian medium-acidic magmatic activities.
机译：皇岗梁矿床是大兴安岭南段皇岗梁—甘竹耳庙成矿带中的超大型锡铁矿床。 Sn-Fe矿床主要发生在矽卡岩接触带，是由含黑云母的碱长石花岗岩与二叠系大石寨组和浙西组的石灰岩地层相互作用形成的。根据矿脉之间的相交关系以及这些脉内不同类型的矿物组合，锡铁矿化可分为两个阶段和四个阶段：矽卡岩阶段，其中包括石榴石-透辉石-磁铁矿（ T1）阶段（第1阶段）和Epidote-伊达克拉斯-锡铁矿-磁铁矿（T2）阶段（第2阶段）;石英-磁铁矿时期，可以分为石英-锡石-磁铁矿（T3）阶段（阶段3）和石英-磁铁矿（T4）阶段（阶段4）。在本文中，我们根据岩石学研究和黄岗梁锡铁矿床中这四种类型磁铁矿中微量元素的LA-ICP-MS分析，讨论了磁铁矿的成因，磁铁矿成分的控制因素以及矿床的成因类型。结果表明，四种磁铁矿通常都贫化了Ti（0.002-3.030 wt％），Al（0.008-1.731 wt％）和Zr（<1.610 ppm）。另外，四种磁铁矿中低的Ni和Cr含量以及相对高的和稳定的Fe含量指示了水热遗传特征。皇岗梁矿类型不同的磁铁矿地球化学变化，可能与流体的组成和f O 2的作用有关，矿液和基质的组成，共存矿物的形成以及其他物理和化学参数（如f O 2）也可能影响可变的磁铁矿地球化学。最重要的角色。黄冈梁锡铁矿床磁铁矿的地质，岩石学和地球化学特征使我们得出结论，该矿床是与燕山期中酸性岩浆活动有关的矽卡岩型锡铁矿床。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号