山东国土资源2017，Vol.33Issue(4)：19-23,5.
土壤地球化学测量在文登青庄地区金矿勘查中的应用
Application of Soil Geochemical Survey in Exploration of Gold Deposit in Qingzhuang Area of Shandong Province
摘要
Abstract
In order to find gold mineralization, combining with outcropped condition of basic rocks in studying area, soil geochemical survey with the scale of 1∶10000 has been carried out.Observation network is 100m×40m and local refinement is 100m×20m.After collectting BC layer soil in 20~30cm deep and passing 40 mesh sieve, the weight of samples is more than 150, and 8 elements as Au, Ag, Cu, Pb, Zn, As, Bi, Mo have been analyzed.Through type R cluster analysis, it is known that it is not suitable to regard As and Sb elements as the main indicator elements for searching Au ores in this area.The correlation of Au and Bi in this area is good.Though calculating and choosing reasonnable background value and the threshold of each element, 190 element anomalies have been circled.According to element combination, 19 comprehensive anomalies have been circled.Among them, AP7, AP19 have good metallogenic conditions and are divided into 1 class.Abnormal verification work should be carried out in this area firstly.Through abnormal verification work ,such as exploratory trench and laboratory analysis,gold (mineralization) have been found in two abnorma areas.Au grade is 0.30 x 10-6~3.64x10-6.It is proved that soil geochemical survey is suitable and effective in ore prospecting.Gold (mineralization) body occured in altered fracture zone in this area.Mineralization mainly include pyritization, silicification and chloritization.It is similar to Xiyuanxia gold deposit.The type of gold deposit is determined as alteration structural breccias-cataclastic rock type gold deposit.关键词
土壤地球化学测量/异常下限/金矿床/文登青庄Key words
Soil geochemical survey/threshold/gold deposit/Qingzhuang area in Wendeng city分类
天文与地球科学引用本文复制引用
张朋朋..土壤地球化学测量在文登青庄地区金矿勘查中的应用[J].山东国土资源,2017,33(4):19-23,5.基金项目
山东省地质勘查项目"山东省文登市青庄地区金矿普查"[鲁勘字(2013)24号] （2013）
