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摘要:
该数据集依托中国地质调查局“山东莱州-招远地区金矿整装勘查区矿产调查与找矿预测”项目,在充分收集地质、物探、化探、遥感及矿产等资料基础上,开展毕郭幅矿产地质调查。项目共采集1 875件水系沉积物样品,采样粒级为-10~+80目,平均采样密度4.5个/km2。采用电感耦合等离子质谱法(ICP-MS)、原子荧光光谱法(AFS)、粉末发射光谱法(ES)和石墨炉原子吸收光谱法(GF-AAS)分析了16种元素,最终形成1:50 000山东毕郭幅地球化学数据集,数据集包含有1 875件样品×16种元素的原始分析数据表格一个,图集一套(含有1张矿产地质图、一张采样点位图和16张元素地球化学图)。区内共新发现单元素地球化学异常149处,综合异常10处,结合地质、矿产、物探、化探、遥感等信息并圈出金矿找矿靶区5处。
Abstract:The geochemical dataset of the 1:50 000 Shandong Biguo map sheet area (also referred to as "the Area") was achieved by carrying out a mineralogical survey of the Area based on the project entitled Mineral Survey and Prospecting Prediction of Integrated Exploration Areas of the Gold Deposits in the Shandong Zhaoyuan-Laizhou Area initiated by the China Geological Survey, as well as through extensive data collection of geological information, geophysical prospecting, geochemical prospecting, remote sensing, and mineralogy. A total of 1 875 stream sediment samples were collected, with sampling size fractions of -10~+80 mesh and an average sampling density of 4.5 sampling points per km2. Furthermore, 16 elements were analyzed by the methods of inductively coupled plasma mass spectrometry (ICP-MS), atomic fluorescence spectrometry (AFS), powder emission spectrometry (ES), and graphite furnace atomic absorption spectrometry (GF-ASS). The final geochemical dataset contains an Excel file and an atlas. The Excel file consists of the original analysis data of 16 elements from the 1 875 samples. The atlas comprises one mineralogical map, one sampling point bitmap and 16 element-specific geochemical maps. A total of 149 geochemical anomalies of single elements and 10 integrated anomalies were discovered in the Biguo map sheet area, as a result of this work. In addition, five prospecting target areas of gold deposits were determined through examining the information obtained from the geological investigation, mineralogical survey, geophysical prospecting, geochemical prospecting and remote sensing.
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Key words:
- Shandong /
- Biguo /
- Geochemistry /
- Stream sediment /
- Dataset
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表 1 数据库(集)元数据简表
条 目 描 述 数据库(集)名称 1∶50 000山东毕郭幅地球化学数据集 数据库(集)作者 智云宝,山东省地质调查院
王增辉,山东省地质调查院
魏正宇,中国冶金地质总局山东正元地质勘查院
赵西强,山东省地质调查院数据时间范围 2016.07−2019.01 地理区域 位于胶东半岛西北部,莱州−招远金矿整装勘查区东部,属山东1∶50 000毕郭幅,面积约413km2。地理坐标:东经120°30′00″~120°45′00″,北纬37°10′00″~37°20′00″。 数据格式 *.xlsx, *.jpg; *.wt, *.wl, *.wp; *.la, *.lm, *.pa, *.pm, *.ta, *tm 数据量 243 Mb 数据服务系统网址 http://dcc.cgs.gov.cn 基金项目 中国地质调查局地质调查项目“整装勘查区找矿预测与技术应用示范”(121201004000150017)子项目“山东莱州−招远地区金矿整装勘查区矿产调查与找矿预测”(121201004000150017-60)资助 语种 中文 数据库(集)组成 包括一个Excel表格,含有1 875件样品×16种元素的原始分析数据;一个图集,含有1张矿产地质图、1张采样点位图和16张元素地球化学图。 表 2 毕郭幅元素地球化学分析数据表
序 号 字符名称 数据类型 实 例 序 号 字符名称 数据类型 实 例 1 分析批号 字符型 HF2016-240 11 Bi 浮点型 0.22 2 实验室编号 字符型 F201616461 12 Mo 浮点型 0.70 3 样品号 字符型 1d1 13 Hg 浮点型 17.6 4 Au 浮点型 2.79 14 Sn 浮点型 1.06 5 Ag 浮点型 0.11 15 W 浮点型 0.76 6 Cu 浮点型 23.6 16 Cd 浮点型 0.10 7 Pb 浮点型 20.9 17 Cr 浮点型 62.4 8 Zn 浮点型 55.9 18 Co 浮点型 17.4 9 As 浮点型 4.30 19 Ni 浮点型 23.2 10 Sb 浮点型 0.48 注:元素含量单位:Au、Hg为10−9,其他元素为10−6。 表 3 毕郭幅各地质子区元素参数特征对比表
元素均值(X)地质子区 Au Ag Cu Pb Zn As Sb Bi Q 3.855 0.091 26.582 19.828 49.895 5.05 0.456 0.179 J 2.75 0.057 12.395 29.351 38.703 2.787 0.409 0.158 Ar 4.335 0.093 36.514 19.31 61.874 4.3 0.441 0.222 全区 3.83 0.085 29.076 22.054 54.766 4.254 0.444 0.2 元素均值(X)地质子区 Mo Hg Sn W Cd Cr Co Ni Q 0.545 16.718 1.353 0.867 0.104 47.798 11.629 21.768 J 0.363 9.101 1.282 0.519 0.057 24.963 5.24 11.516 Ar 0.584 17.635 1.43 0.909 0.118 64.641 16.693 31.406 全区 0.536 15.46 1.406 0.818 0.102 52.288 13.226 25.052 注:表中“X”为调查区各单元及全区算数均值;岩性:Ar−太古代片麻岩系子区,J−侏罗世二长花岗岩子区,Q−第四纪沉积层子区。其中,Au、Hg为×10−9,其余元素为×10−6。 表 4 分析方法的检出限及分析元素报出率
元素编号 被检测的元素 分析方法的检出限 规范要求的检出限 报出率(%) 分析方法 1 Au 金 0.0003 0.0003 98.7 GF-AAS 2 Ag 银 0.02 0.03 99.62 ES 3 Cu 铜 0.5 1.5 99.9 ICP-MS 4 Pb 铅 0.5 5 99.9 ICP-MS 5 Zn 锌 1 15 99.95 ICP-MS 6 As 砷 0.2 1 99.52 AFS 7 Sb 锑 0.1 0.2 99.9 AFS 8 Bi 铋 0.02 0.1 99.86 ICP-MS 9 Mo 钼 0.05 0.5 100 ICP-MS 10 Hg 汞 0.005 0.005 93.28 AFS 11 Sn 锡 0.2 1 100 ICP-MS 12 W 钨 0.05 0.5 99.86 ICP-MS 13 Cd 镉 0.03 0.1 98.18 ICP-MS 14 Cr 铬 2 15 99.9 ICP-MS 15 Co 钴 0.1 1 99.95 ICP-MS 16 Ni 镍 0.5 3 100 ICP-MS 注:电感耦合等离子质谱法(ICP-MS),粉末发射光谱法(ES),原子荧光光谱法(AFS),石墨炉原子吸收光谱法(GF-AAS)。 表 1 Metadata Table of Database (Dataset)
Items Description Database (dataset) name Geochemical Dataset of the 1∶50 000 Shandong Biguo Map Sheet Area Database (dataset) authors Zhi Yunbao, Shandong Institute of Geological Survey
Wang Zenghui, Shandong Institute of Geological Survey
Wei Zhengyu, Geological Exploration Institute of Shandong
Zhengyuan, China Metallurgical Geology Bureau
Zhao Xiqiang, Shandong Institute of Geological SurveyData acquisition time 2016.07—2019.01 Geographic area In the northwest of the Jiaodong Peninsula, in the east of the Integrated Exploration Areas of the Gold Deposits in the Shandong Zhaoyuan-Laizhou Area, and in the 1∶50 000 Biguo map sheet area.Geographical coordinates: east longitude 120°30′00″~120°45′00″ and north latitude 37°10′00″~37°20′00″ Data format *.xlsx, *.jpg, *.wt, *.wl, *.wp *.la, *.lm, *.pa, *.pm, *.ta, *tm Data size 243 Mb Data service system URL http://dcc.cgs.gov.cn Fund project China Geological Survey Project “Mineral Survey and Prospecting Prediction of Integrated Exploration Areas of the Gold Deposits in the Shandong Zhaoyuan-Laizhou Area” (121201004000150017-60), a sub-subject of the project named Demonstration Project of Prospecting Prediction and Technical Application in Integrated Exploration Areas initiated by the Development and Research Center of the China Geological Survey (121201004000150017) Language Chinese Database (dataset) composition The dataset consists of an Excel file and an atlas. The Excel file consists of the original analysis data of 16 elements in 1 875 samples. The atlas comprises one mineralogical map, one sampling point bitmap and 16 element-specific geochemical maps. 表 2 Element Geochemical Analysis Data in Biguo Map Sheet Area
S.N. Name Data type Example S.N. Name Data type Example 1 Batch No.
to be analyzedChar HF2016-240 11 Bi Float 0.22 2 Lab No. Char F201616461 12 Mo Float 0.70 3 Sample No. Char 1d1 13 Hg Float 17.6 4 Au Float 2.79 14 Sn Float 1.06 5 Ag Float 0.11 15 W Float 0.76 6 Cu Float 23.6 16 Cd Float 0.10 7 Pb Float 20.9 17 Cr Float 62.4 8 Zn Float 55.9 18 Co Float 17.4 9 As Float 4.30 19 Ni Float 23.2 10 Sb Float 0.48 Note: units are included in elements: the unit of Au and Hg is 10−9, and the unit of other elements are 10−6. 表 3 Comparison of Parameters of Characteristics of the Elements in Sub-Areas of the Area
Mean value ( )
Geological sub-areaAu Ag Cu Pb Zn As Sb Bi Q 3.855 0.091 26.582 19.828 49.895 5.05 0.456 0.179 J 2.75 0.057 12.395 29.351 38.703 2.787 0.409 0.158 Ar 4.335 0.093 36.514 19.31 61.874 4.3 0.441 0.222 Whole area 3.83 0.085 29.076 22.054 54.766 4.254 0.444 0.2 Mean value ( )
Geological sub-areaMo Hg Sn W Cd Cr Co Ni Q 0.545 16.718 1.353 0.867 0.104 47.798 11.629 21.768 J 0.363 9.101 1.282 0.519 0.057 24.963 5.24 11.516 Ar 0.584 17.635 1.43 0.909 0.118 64.641 16.693 31.406 Whole area 0.536 15.46 1.406 0.818 0.102 52.288 13.226 25.052 Note: “X” in the table is the arithmetical mean value of each sub-area or the whole area in the Area; Lithology: Ar- Archean gneiss system sub-area, J- Jurassic adamellite sub-area, Q- Quaternary alluvium sub-area. Among these parameters, the unit of Au, Hg is 10−9 and the unit of the remaining elements is 10−6. 表 4 Detection Limits of the Analytical Methods and the Reported Rates of the Elements Under Analysis
Element No. Element detected Detection limit of analysis method Detection limit required by the Specification Reported rate (%) Analysis method 1 Au Gold 0.000 3 0.000 3 98.7 GF-AAS 2 Ag Silver 0.02 0.03 99.62 ES 3 Cu Copper 0.5 1.5 99.9 ICP-MS 4 Pb Lead 0.5 5 99.9 ICP-MS 5 Zn Zinc 1 15 99.95 ICP-MS 6 As Arsenic 0.2 1 99.52 AFS 7 Sb Antimony 0.1 0.2 99.9 AFS 8 Bi Bismuth 0.02 0.1 99.86 ICP-MS 9 Mo Molybdenum 0.05 0.5 100 ICP-MS 10 Hg Mercury 0.005 0.005 93.28 AFS 11 Sn Stannum 0.2 1 100 ICP-MS 12 W Tungsten 0.05 0.5 99.86 ICP-MS 13 Cd Cadmium 0.03 0.1 98.18 ICP-MS 14 Cr Chromium 2 15 99.9 ICP-MS 15 Co Cobalt 0.1 1 99.95 ICP-MS 16 Ni Nickel 0.5 3 100 ICP-MS Legend: inductively coupled plasma mass spectrometry (ICP-MS), powder emission spectrometry (ES), atomic fluorescence spectrometry (AFS), and graphite furnace atomic absorption spectrometry (GF-AAS) -
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