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黄金科学技术 ›› 2020, Vol. 28 ›› Issue (1): 21-31.doi: 10.11872/j.issn.1005-2518.2020.01.037

• 矿产勘查与资源评价 • 上一篇    下一篇

山东栖霞—大柳行地区金矿资源潜力评价

黄鑫(),宋倩(),王勇军,沈立军,朱裕振,孙超   

  1. 山东省煤田地质规划勘察研究院,山东 济南 250100
  • 收稿日期:2019-04-28 修回日期:2019-09-04 出版日期:2020-02-29 发布日期:2020-02-26
  • 通讯作者: 宋倩 E-mail:705018182@qq.com;291062049@qq.com
  • 作者简介:黄鑫(1990-),男,山东济宁人,工程师,从事地质勘查及找矿预测研究工作。705018182@qq.com
  • 基金资助:
    山东省地质勘查项目“山东省栖霞—蓬莱金矿带黑岚沟—大柳行金矿田深部成矿预测项目”[编号:鲁勘字(2018)15号]资助

Evaluation of Gold Resource Potential in Qixia-Daliliuxing Area,Shandong Province

Xin HUANG(),Qian SONG(),Yongjun WANG,Lijun SHEN,Yuzhen ZHU,Chao SUN   

  1. Shandong Provincial Research Institute of Coal Geology Planning and Exploration,Jinan 250100,Shandong,China
  • Received:2019-04-28 Revised:2019-09-04 Online:2020-02-29 Published:2020-02-26
  • Contact: Qian SONG E-mail:705018182@qq.com;291062049@qq.com

摘要:

栖霞—大柳行地区位于胶东中部栖霞—蓬莱金矿成矿带内,是胶东重要的金成矿区,成矿条件优越。基于综合信息成矿系列预测方法,对该区进行金矿资源量预测。通过收集本区地质、构造和物化探等综合信息,对成矿背景进行总结,选用特征分析法对预测变量进行优选;对研究区划分了4个矿田级金矿成矿预测区、27个最小预测单元,然后采用地质体体积法进行资源量估算,为本区提供金矿勘查的靶区。其中,4个矿田级预测区内的27个最小预测单元分别为A级区(成矿条件优越)8处,B级区(成矿条件良好)12处,C级区(成矿条件一般)5处和D级区(成矿条件较差)2处。根据预测结果,在研究区共圈定27个找矿靶区,共预测(334?)金金属量2 810 380 kg,包括已查明的金资源储量3 106 321 kg和未查明预测(334?)金金属量24 140 510 kg。

关键词: 金矿, 资源潜力评价, 综合信息, 评价模型, 栖霞—大柳行地区, 山东省

Abstract:

Jiaodong area is the largest gold-producing area in China,and its gold prospecting has been receiving great attention.Among them,Qixia-Daliuxing area is located in the Qixia-Penglai gold ore metallogenic belt in central Jiaodong,which is an important gold metallogenic area in Jiaodong.Based on the basic geological data,research degree and geological conditions in this area,this paper conducts prediction and evaluation of mineral resources.The gold resources in Qixia-Daliuxing area were predicted by the integrated information mineralization series prediction method.Compared with other methods,this method can make full use of relevant geological data,and has a targeted extraction of geological information.At the same time,it has a stronger ability to comprehensively use computers for calculations,and can carry out more three-dimensional research.Therefore,it’s better to guide the prospection in this area.In this work,the formation mechanism,metallogenic regularity,ore-controlling conditions and prospecting indicators of the gold deposits in Daliuxing-Qixia area were summarized through in-depth analysis of a large amount of data obtained,combined with typical deposit research.Comprehensive geological,geophysical and geochemical information was used to guide the prediction of mineralization in the area and the prediction of deep and edge mineralization of known deposits.We analyzed the gold ore metallogenic model and regional metallogenic model by research of typical ore deposits.Based on the metallogenic factors in the Daliuxing-Qixia area,combined with regional metallogenic regularities,ore-controlling conditions,metallogenic geological conditions and types of deposit genesis,the geological forecasting factors were divided and the prediction model was established to further accurately predict the resource potential of the ore-exploring target area.The qualitative prediction,quantitative prediction and extrapolation estimation of the gold resources in the study area were carried out by using feature analysis method,comprehensive geological information method and limited extrapolation of known borehole data.The study area is divided into 4 orefield-level gold deposit metallogenic prediction areas and 27 minimum prediction units,and the qualitative prediction is mainly based on the feature analysis method.There are 8 A-level areas,12 B-level areas,5 C-level areas and 2 D-level areas.The geological body volume method was used to predict the resource amount.A total of 27 prospecting target areas are delineated in the study area.The predicted amount of gold metal(334?) was 2 810 380 kg,including the identified gold resource reserves of 3 106 321 kg and unidentified forecast gold metal quantity (334?) of 24 140 510 kg.

Key words: gold mine, resource potential evaluation, comprehensive information, evaluation model, Qixia-Daliuxing area, Shandong Province

中图分类号: 

  • P618.51

图1

研究区大地构造位置图Ⅲa13-胶北凸起;Ⅲa14-臧格庄凹陷;Ⅲa15-烟台凸起;Ⅲa16-栖霞—马连庄凸起;1.一级单元界线;2.三级单元界线;3.四级单元界线;4.不整合界线;5.地质单元代号;6.隆起区;7.凹陷区;8.研究区范围"

图2

蓬莱—栖霞地区金矿矿田级预测区分布1~27-最小预测区单元序号;1.新太古代;2.古远古代滹沱序列;3.中生代侏罗纪玲珑序列花岗岩;4.中生代燕山晚期郭家岭序列花岗闪长岩;5.中生代燕山晚期伟德山序列花岗岩;6.断层;7.铜矿床;8.铜锌矿床;9.铅锌矿床;10.多金属矿床;11.金矿床;12.砂金矿床;13.最小预测区及编号;14.矿田级预测区;15.研究区范围"

表1

蓬莱—栖霞地区变量权系数优选"

变量序号原变量序号变量名称变量权系数变量序号原变量序号变量名称变量权系数
140重砂金异常0.07651513NE构造(含推断构造)0.0236
239金矿(化)点0.0710167中生代燕山早期郭家岭序列二长花岗岩0.0231
342重砂黄铁矿异常0.06701737金矿中型0.0229
433化探异常Au(Ag)0.06361835化探异常(As、Hg、Bi)0.0226
534化探异常(Cu、Pb、Zn)0.06331910古元古代吕梁期双顶序列二长花岗质片麻岩0.0185
641重砂异常(Cu、Pb)0.0605206中生代燕山早期郭家岭序列花岗闪长岩0.0172
711新太古代阜平期栖霞序列花岗质片麻岩0.05782119正负场分界,鼻状区0.0158
814NNE向构造(含推断构造)0.05412220负场(重力低、缓梯度带)0.0150
928正负磁场交界(正负均变场)0.03672336化探异常(Sn、Mo)0.0146
1031化探异常与金异常不套合0.0305243古元古代粉子山群0.0140
1138金矿小型0.0300259新元古代玲珑序列二长花岗岩0.0126
1222负场(重力低、鼻状区)0.02902626正磁场0.0117
1332化探异常与金异常套合0.02842718正负场分界(缓梯度带)0.0108
1427负磁场0.0267

图3

蓬莱—栖霞地区变量权系数分布图"

表2

蓬莱—栖霞地区定位预测综合分析结果"

模型区单元序号单元名称特征分析结果Q聚类分析数量化理论Ⅳ对应分析综合预测评价结果
村里集1郭家店最小预测区AABAA
2后丘山最小预测区BBCBB
8车里张家最小预测区BABBB
9赵家村最小预测区BBABB
大柳行—黑岚沟3遇驾夼最小预测区AABAA
4宫家庄最小预测区CCDCC
5西石硼最小预测区ABBBB
6大柳行最小预测区AAAAA
7陈家沟最小预测区CBCCC
10前山顶—于家沟最小预测区BABAA
12黑岚沟—虎路线最小预测区AAAAA
13肖古家最小预测区CCDCC
台前—陡崖14艾山汤—上艾中最小预测区BCCBB
17台前—陡崖最小预测区AAAAA
18郭落庄最小预测区CDDDD
19高家最小预测区BBCCB
23孙疃最小预测区BDBCD
马家窑20后夼最小预测区BBCCB
21留家沟最小预测区ABCBA
22马家窑最小预测区AABAA
24刘家河最小预测区BBCCB
25十甲最小预测区CDDDB
26林家庄最小预测区CCBCB
未划归矿田11西林最小预测区BBBAB
15吕家庄最小预测区BBDBB
16庙后最小预测区CBCBC
27唐家泊最小预测区BBCBC

表3

典型矿床的预测资源总量"

典型金矿床名称查明资源量/kg预测总面积/m2预测总深度/m含矿系数/(kg·m-3预测资源量/kg矿床资源总量合计/kg
黑岚沟40 98244 038 8002 0000.000055830327 825368 807
笏山18 78423 726 7002 0000.00001634151 69670 480
村里集2 10824 278 8028000.0000013022 5294 637
马家窑10 0624 796 1001 0000.00006294122 13732 199

表4

模型区预测金矿资源量估算参数及结果"

模型区名称模型区面积/m2延深/m体积含矿率/(kg·m-3体积含矿率修正系数模型区资源总量/kg
村里集预测区16 000 0001 0000.0000013020.19 273
大柳行—黑岚沟预测区28 000 0001 0000.0000558300.1156 324
台前—陡崖预测区26 000 0001 0000.0000163410.112 876
马家窑预测区7 500 0001 0000.0000629410.17 724

图4

村里集预测区金矿资源量估算图1.断层;2.铅锌矿床;3.金矿床;4.最小预测区及编号;5.矿田级预测区"

图5

大柳行—黑岚沟预测区金矿资源量估算图1.断层;2.铜矿床;3.铜锌矿床;4.铅锌矿床;5.金矿床;6.砂金矿床;7.最小预测区及编号;8.矿田级预测区"

图6

台前—陡崖预测区金矿资源量估算图1.断层;2.金矿床; 3.最小预测区及编号;4.矿田级预测区"

图7

马家窑预测区金矿资源量估算图1.断层;2.铜矿床;3.铅锌矿床;4.多金属矿床;5.金矿床;6.砂金矿床;7.最小预测区及编号;8.矿田级预测区"

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