Abstract:Beidacheng gold deposit occurs in the metamorphic rocks of the Archean Xiaotazi formation of Liaohe group and was controlled by NE ductile-brittle shear belt. The ore body presents as vein structure. Two mineralized types are pyrite-quartz vein and altered rocks. The mineralization has positive relations with alteration. Ore sources are provided by the Archean amphibolitic formation, and have genetic relationship with Yanshan supergene-ultra-supergene quartz-orthophyre and rhyolite porphyry. Sulphur isotopic compositions correspond to meteoritic sulfur. The mineralization temperatures are mainly between 120℃ to 270℃. It belongs to magmatic metamorphic hydrothermal reconstruction Au deposit of medium-lower temperature.
杨永林. 内蒙古敖汉旗北大城金矿床地质特征[J]. 地质与资源, 1993, 2(3): 181-187.
Yang Yonglin. THE GEOLOGIC FEATURES OF BEIDACHENG GOLD DEPOSIT, AOHAN AUTONOMOUS COUNTY, INNER MONGOLIA. GEOLOGY AND RESOURCES, 1993, 2(3): 181-187.