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GEOLOGICAL CHARACTERISTICS AND ORE CONTROLLING CONDITIONS OF DONGPING GOLD DEPOSIT |
Li Huaiyong |
Dongping Gold Mine, Chongli County, Hebei Province |
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Abstract Dongping gold deposit is located at the internal contact zone between the Shuiquangou weak alkaline complex and the metamorphic rocks of Archeozoic Sanggan group The ores consist of two industrial types,i e,quartz vein and alteration rock types,but the former is dominated The ore vein zones strike in north-northeast Quartz,pyrite,specularite,chalcopyrite and calaverite are gold-carrying minerals Gold fineness ranges from 937 to 990. Kfeldspathization and silicification are dominant mineralizing alteration Red-colored Kfeldsparthization is the typical character of Dongping and other gold deposits occurring in the Shuiquangou complex The mineralization can be devided into 5 stages,of which the second and third stages,i e,specularite-native gold-quartz stage and polymetallic sulphides-native gold-quartz stage,are of two main mineralizing stages Shuiquangou complex supplied not only hot source,but also mineralized materials and mineralizer during mineralization Approximately E-W-trending deep large Shangyi-Chongli-Chicheng fault controls the occurrence of Shuiquangou gold orefield whereas two groups of NNE-and NW-trending fissures control the occurrence of the orebodies of Dongping gold deposit.
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Received: 16 January 1998
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