• 责任者：Xu Jiuhua (Department of Resource Engineering ; Beijing University of Science and Technology ; Beijing 100083 ; China) ; Zhang Guorui
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2009
• 卷期：28(2)
• 关键词：金矿 ; gold ores ; 阿尔泰山 ; Altai Mountains
• 页码：p.141-151
• 图表：5 illus., 3 tables, 20 refs.
• 分类号：1001
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

The Saidu gold deposit is located in the northwest part of Ertix tectonic zone in Xinjiang. The ore bodies occur in altered mylonite zones within the Markuli giant fault belt and are controlled by the ductile shear zone. The tectonic-metallogenic fluids of the early stage are characterized by mesothermal-hypothermal CO₂-N₂-rich fluids, with homogenization temperatures of fluid inclusions being 252.0~hemas-microsoft-com:office:smarttags" />hmetcnv w:st="on" UnitName="℃" SourceValue="408" HasSpace="False" Negative="False" NumberType="1" TCSC="0">408.0hansi-font-family: ’Times New Roman’">℃hmetcnv>. The tectonic-metallogenic fluids at the middle stage are characterized by CO₂-H₂O fluids, with homogenization temperatures being 203.0~hmetcnv w:st="on" UnitName="℃" SourceValue="325.8" HasSpace="False" Negative="False" NumberType="1" TCSC="0">325.8hansi-font-family: ’Times New Roman’">℃hmetcnv>. The fluids at the late stage were epithermal-mesothermal low salinity aqueous solutions, with homogenization temperatures being 120.0~hmetcnv w:st="on" UnitName="℃" SourceValue="221" HasSpace="False" Negative="False" NumberType="1" TCSC="0">221.0hansi-font-family: ’Times New Roman’">℃hmetcnv>. The hansi-font-family: ’Times New Roman’">δ³⁴S values of pyrite in the gold deposit range from 3.53hansi-font-family: ’Times New Roman’">‰ to 5.88hansi-font-family: ’Times New Roman’">‰; the lead isotopic compositions are fairly constant, with ²⁰⁶Pb/²⁰⁴Pb ranging from 18.099 7 to 18.358 5, ²⁰⁷Pb/²⁰⁴Pb ranging from 15.487 7 to 15.579 0, and ²⁰⁸Pb/²⁰⁴Pb ranging from 38.111 6 to 38.355 1. hemas-microsoft-com:office:office" />