The Concept and Application of Element Equivalent-concentrating: A Case Study for Anomaly Interpretation of Soil Survey from Zhongba Mining Area, Ningqiang County, Shaanxi Province
-
摘要: 矿产资源是一类有用元素高度富集的特殊地质体。为便于对比研究各元素在成矿作用过程中富集离散规律，笔者提出了等量浓集概念。将各元素从克拉克值到矿体边界品位的浓集过程进行等量划分，使得不同元素间富集程度具有定量可比性，即在同一等量浓集级次上各元素具有同等富集程度和成矿潜力。将该方法应用于扬子北缘后龙门山造山带内的中坝矿区，取得了良好成效。从中坝矿区等量浓集直方图可知，主成矿元素为Au、Ag、Mo，成矿伴生元素为Cu、Zn，找矿指示元素为As、Sb、Pb；等量浓集地球化学图可以清晰突显出该区元素分区边界，指导厘定了志留系与寒武系界线，同时发现Au元素比其他元素有更高的浓集程度；通过等量浓集7级异常划分，圈定了较好的Au、Cu、Mo等元素异常，在7级Au异常区查证发现了辛家咀金矿。实践表明，应用等量浓集原理研究元素分布、分配及富集离散规律简便而实用。Abstract: Mineral resources are a kind of special geological body highly enriched in useful elements. In order to facilitate the comparative study of the enrichment and dispersion laws of various elements in the process of mineralization, the author proposed the concept of equivalent-concentrating, which equally divided the concentration process of each element from the Clark value to the boundary grade of the ore body, so that the enrichment degree of different elements is quantitatively comparable, that is, each element has the same enrichment degree and metallogenic potential at the same equivalent-concentrating level. This method was applied to the Zhongba mining area in the Back-Longmenshan orogenic belt on the northern margin of Yangtze plate, and achieved good results. Through the element equivalent-concentrating histogram, it can be known that the main ore-forming elements in the Zhongba mining area are Au, Ag, Mo, the ore-forming associated elements are Cu, Zn, and the indicator elements are As, Sb, Pb; the geochemical maps in equivalent-concentrating method can clearly highlight the elemental boundaries of the area, guide the determination of the Silurian and Cambrian stratigraphic boundaries in the area, and it is found that Au has a higher degree of concentration than other elements; The anomalies are delineated such as Au, Cu, Mo, etc. and the Xinjiazui gold mine was found in the grade 7 gold anomaly area. Practice shows that it is simple and practical to apply the principle of element equivalent-concentrating to study the elements distribution and the law of enrichment dispersion.
-
Key words:
- equivalent-concentrating /
- Zhongba /
- soil survey /
- gold deposit /
- Ningqiang
-
-
蒋敬业, 程建萍, 祁士华, 等.应用地球化学[M].武汉:中国地质大学出版社, 2006:145-241.
JIANG Jingye, CHENG Jianping, QI Shihua, et al. Applied Geochemistry[M]. Wuhan:China University of Geosciences Press, 2006:145-241.
宋贺民, 张辉, 顾松松, 等.新疆哈拉奇地区水系沉积物地球化学特征及找矿方向[J].地质通报, 2014, 33(01):71-78.
SONG Hemin, ZHANG Hui, GU Songsong, et al. Stream sediment geochemical characteristics and prospecting direction in Karaqi area of Xinjiang[J]. Geological Bulletin of China, 2014, 33(1):71-78.
杜保峰, 杨长青, 柴建玉, 等.水系沉积物测量在西藏春哲地区找矿效果[J].中国地质, 2018, 45(3):604-616.
DU Baofeng, YANG Changqing, CHAI Jianyu, et al. The effect of stream sediment survey for prospecting in Chunzhe area, Tibet[J]. Geology in China, 2018.45(3):604-616.
侯长才, 李玉莲, 李永太, 等. 青海东昆仑五龙沟地区化探次生晕觅金效果探讨[J].西北地质, 2019, 52(1):183-194.
HOU Changcai, LI Yulian, LI Yongtai, et al. The Effect of Applying Geochemical Exploration Secondary Halo Anomalies to Prospect Gold Deposits in Wulonggou Area, East Kunlun, Qinghai Province[J]. Northwestern Geology, 2019, 52(1):183-194.
段吉学, 刘江.综合物化探在内蒙萤石多金属矿普查中的应用研究[J].西北地质, 2019, 52(3):265-274.
DUAN Jixue, LIU Jiang. Application of Comprehensive Physical and Chemical Exploration Method for Prospecting Fluorite Polymetallic Deposit in Inner Mongolia[J]. Northwestern Geology, 2019, 52(3):265-274.
张德会.成矿作用地球化学[M].北京:地质出版社, 2015:11-52.
ZHANG Dehui. Geochemistry of Ore-Forming Processes[M]. Beijing:Geological Publishing House, 2015:11-52.
吴锡生.化探数据处理方法[M].北京:地质出版社, 1993:18-36.
WU Xisheng. Geochemical data processing methods[M]. Beijing:Geological Publishing House, 1993:18-36.
韩东昱, 龚庆杰, 向运川.区域化探数据处理的几种分形方法[J].地质通报, 2004, 23(7):714-719.
HAN Dongyu, GONG Qingjie, XIANG Yunchuan. Some new fractal methods for regional geochemical survey data processing[J]. Geological Bulletin of China, 2004, 23(7):714-719.
李明喜, 庞存廉, 于兆云, 等.青海省1:50000地球化学水系沉积物测量工作细则(试行)[S].地矿部青海地质矿产勘查开发局, 1999, 45-51.
LI Mingxi, PANG Cunlian, YU Zhaoyun, et al. Detailed rules for 1:50000 geochemical stream sediment survey in Qinghai province (trial implementation)[S]. Qinghai Bureau of Geology and Mineral Exploration and Development GMM, 1999:45-51.
向运川, 牟绪赞, 任天祥, 等.全国矿产资源潜力评价化探资料应用研究[M].北京:地质出版社, 2018:198-203.
XIANG Yunchuan, MOU Xuzan, REN Tianxiang, et al. Application of geochemical data in the evaluation of mineral resources potential in China[M]. Beijing:Geological Publishing House, 2018:198-203.
马润华, 伊鹍英, 王振东, 等.陕西省岩石地层[M].武汉:中国地质大学出版社, 2007:1-7.
MA Runhua, YI Kunying, WANG Zhendong, et al. Stratigraphy(Lithostratic) of Shaanxi Province[M]. Wuhan:China University of Geosciences Press, 2007:1-7.
朱裕生, 肖克炎, 宋国耀, 等.中国主要成矿区(带)成矿地质特征及矿床成矿谱系[M].北京:地质出版社, 2007:163-178.
ZHU Yusheng, XIAO Keyan, SONG Guoyao, et al. Geological Characteristics and Deposit Metallogenic Pedigree of Major Metallogenic Areas (bands) in China[M]. Beijing:Geological Publishing House, 2007:163-178.
李智武, 冉波, 肖斌, 等.四川盆地北缘震旦纪-早寒武世隆坳格局及其油气勘探意义[J].地学前缘, 2019, 26(1):59-85.
LI Zhiwu, RAN Bo, XIAO Bin, et al. Sinian to Early Cambrain uplift-depression framework along the northern margin of the Sichuan Basin, central China and its implications for hydrocarbon exploration[J]. Earth Science Frontiers, 2019, 26(1):059-085.
钟俊.四川广元太阳坪金矿床地质特征及成因研究[D].成都:西南科技大学硕士学位论文, 2019:10-16.
ZHONG Jun. Geological Characteristics and Genesis of Taiyangping Gold Deposit, Sichuan Province[D]. Chengdu:Southwest University of Science and Technology Master Degree Thesis, 2019:10-16.
孙克俭, 孙斌.1:20万略阳幅、碧口幅地球化学图说明书[R].陕西省地质矿产局物化探队化探分队, 1989.
樊战军.陕西省勉略宁地区南部1/5万水系沉积物测量报告[R].中国人民武装警察部队黄金第十四支队, 1999.
中华人民共和国地质矿产行业标准.矿产地质勘查规范 岩金矿:DZ/T 0205-2020[S].
中华人民共和国地质矿产行业标准.矿产地质勘查规范 铜、铅、锌、银、镍、钼矿:DZ/T 0214-2020[S].
中华人民共和国地质矿产行业标准.矿产地质勘查规范 钨、锡、汞、锑矿:DZ/T 0201-2020[S].
范德廉, 张焘, 叶杰, 等.中国的黑色岩系及其有关矿床[M].北京:科学出版社, 2004:1-48.
FAN Delian, ZHANG Tao, YE Jie, et al. Black rock series in China and related deposits[M]. Beijing:Science Press, 2004:1-48.
Gong Qingjie, Li Jinzhe, Xiang Yunchuan, et al. Determination and classification of geochemical anomalies based on backgrounds and cutoff grades of trace elements:A case study in South Nanling Range, China[J]. Journal of Geochemical Exploration, 2018, 194:44-51.
Rudnick R L, Gao S. Composition of the Continental Crust. Treatise on Geochemistry[M]. Oxford:Elsevier, 2003, 3(01):1-64.
-
计量
- 文章访问数: 660
- PDF下载数: 106
- 施引文献: 0
下载: