Characteristics of ore-forming fluids of gold deposits in Daqingshan District, Inner Mongolia, China

被引：0

作者：

Xu, Jiuhua ^{[1
]}

Xie, Yuling ^{[1
,2
]}

Qian, Dayi ^{[1
]}

Ding, Rufu ^{[2
]}

Li, Jianping ^{[1
]}

机构：

[1] Resource Engineering School, University of Science and Technology Beijing, Beijing 100083, China

[2] China University of Geosciences, Beijing 100083, China

来源：

Journal of University of Science and Technology Beijing: Mineral Metallurgy Materials (Eng Ed) | 1999年 / 6卷 / 02期

关键词：

Calcite - Carbon dioxide - Inclusions - Isotopes - Mineralogy - Ore deposit geology - Precipitation (chemical) - Pyrites - Quartz - Sulfur compounds;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Located in the mid-west of Inner Mongolia, Daqingshan district has many gold deposits occurring along a east-west striking ductile shear zone within a greenstone belt, which is mainly composed of the Archean Wulashan group. The hydrothermal mineralization can be divided into four stages: (1) pyrite-quartz, (2) quartz-pyrite, (3) polymetallic sulfides and (4) carbonates-quartz. The major metallic minerals in the ore of gold-bearing veins are native gold, electrum, pyrite, chalcopyrite and galena, but the gangue minerals are mainly quartz, secondarily sericite, ankerite and calcite. Principal alteration patterns in the gold deposits are sericitization, silicification, pyritization, carbonatization and chloritization. An investigation on fluid inclusions shows that the ore-forming fluids were low in salinities and high in CO2 content. It is concluded that the gold deposits in Daqingshan district are similar to those in Xiaoqinling area, in aspects of geological characteristics, mineral association and stable isotope composition.

引用

页码：77 / 82