内蒙古固阳县文圪乞镁铁质—超镁铁质岩体中铂族金属矿物的特征及成因

现代地质 ›› 2010, Vol. 24 ›› Issue (1): 107-111.

内蒙古固阳县文圪乞镁铁质—超镁铁质岩体中铂族金属矿物的特征及成因

1.中国地质大学地球科学与资源学院，北京100083; 2.内蒙古自治区区域地质调查研究院，内蒙古呼和浩特010020

出版日期:2010-02-20 发布日期:2010-03-29
作者简介:赵兴国，男，博士研究生，1965年出生，矿物学、岩石学、矿床学专业，主要从事岩浆作用与成矿研究工作。Email:zhxg@163.com。
基金资助:
国家自然科学基金项目（40472051,40534020）；高等学校学科创新引智计划（B07011）；中国地质调查局项目（1212010711814）；内蒙古自治区项目（06-2-KC56）。

Characteristics and Origin of Platinum-group Minerals in Wen'geqi Mafic-ultramafic Complex, Guyang County, Inner Mongolia

1. School of Earth Sciences and Resources，China University of Geosciences， Beijing100083, China;
2.Geological Survey Institute of Inner Mongolia，Huhhot, Inner Mongolia010020, China

Online:2010-02-20 Published:2010-03-29

摘要/Abstract

摘要：

在内蒙古固阳县文圪乞镁铁质—超镁铁质岩体中发现了砷铂矿、砷锑钯矿和黄碲钯矿等铂族金属矿物。野外观察和室内电子探针分析发现，砷铂矿与磁铁矿、绿泥石共生，砷锑钯矿和黄碲钯矿与黄铁矿共生。铂族金属主要赋存在二辉石岩中，且在镁铁质—超镁铁质杂岩体中呈脉状产出。文圪乞铂族金属的分布、产状及特征显示岩浆作用对铂族金属的富集起着关键的控制作用，岩浆期后的热液作用对铂族金属迁移、富集也起着关键作用。

关键词: 铂族金属矿物, 岩浆期后流体；文圪乞镁铁质—超镁铁质岩体；内蒙古固阳县

Abstract:

Three kinds of platinum group minerals （PGMs） are found in the Wengeqi maficultramafic complex in Guyang County, Inner Mongolia. They are sperrylite which occurs together with magnetite and chlorite, and mertieite and kotulskite which occur together with pyrite. Based on field observations and electron microprobe analysis, PGMs mainly occur in websterite, and the websterite is distributed in maficultramafic complex as a dike. The distribution, occurrence and characteristics of PGMs in the Wengeqi maficultramafic complex show that magmatism plays an important role in the formation of platinum group element ore deposits;and the post magmatic hydrothermal fluids also affect on the migration and concentrtion of PGMs.

Key words: platinum group mineral, post magmatic hydrothermal fluid, Wen'geqi mafic-ultramafic complex, Guyang County, Inner Mongolia

中图分类号:

P578.1*2

赵兴国，苏尚国，王水炯，杨帅师，侯建光，池涵. 内蒙古固阳县文圪乞镁铁质—超镁铁质岩体中铂族金属矿物的特征及成因[J]. 现代地质, 2010, 24(1): 107-111.

ZHAO Xing-guo1, SU Shang-guo，WANG Shui-jiong，YANG Shuai-shi, HOU Jian-guang. Characteristics and Origin of Platinum-group Minerals in Wen'geqi Mafic-ultramafic Complex, Guyang County, Inner Mongolia[J]. Geoscience, 2010, 24(1): 107-111.