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Gold Science and Technology ›› 2019, Vol. 27 ›› Issue (2): 163-171.doi: 10.11872/j.issn.1005-2518.2019.02.163

• Mineral Exploration and Resource Evaluation • Previous Articles    

Analysis of Mineralization Space in Guilaizhuang Gold Mining Area Based on Surpac Software

Yuanfeng DONG1(),Rongjun SI1(),Zhonglin XIANG1,Chaochen FENG2,Guoquan ZHANG2,Yingmei ZHANG2   

  1. 1. School of Energy Science and Engineering，Henan Polytechnic University，Jiaozuo 454000，Henan, China
    2. Shandong Lunan Geological Survey Institute，Yanzhou 272000，Shandong，China
  • Received:2018-09-15 Revised:2018-10-12 Online:2019-04-30 Published:2019-04-30
  • Contact: Rongjun SI E-mail:240828847@qq.com;sirongjun@163.com

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Abstract:

Guilaizhuang gold deposit is located in the eastern margin of Mesozoic copper-stone complex.It is the largest cryptoexplosive breccia gold deposit in China，and also the largest gold deposit in Western Shandong Province.The mine has been exploited for 25 years since 1993 and has become a resource crisis mine.It is particularly necessary to carry out deep prospecting and peripheral prospecting.For a long time，a lot of scientific research work has been carried out in Guilaizhuang area， fruitful prospecting results and new understanding has achieved，and a lot of data was accumulated.Although the geological exploration degree in this area is very high，deep research is relatively weak.In order to reveal the three-dimensional characteristics of deep mineralization of main orebody and guide deep prospecting，a three-dimensional geological model of main orebody of Guilaizhuang gold mine was established by Surpac software.There are 13 gold orebodies delineated in Guilaizhuang gold deposit.Among them，No.1-1 and No.1-2 gold orebodies are the main orebodies.The orebodies mainly occur in the structural alteration zone of Guilaizhuang F1 fault and the surrounding rocks on both sides of the fault.The orebody is 450 m in scale，600 m in slope depth and 14 m in average thickness.Its occurrence is strictly controlled by alteration zone，which is consistent with the occurrence of F1 fault.After statistical analysis of sample length and processing of super-high grade，a block model was established.The resource amount of gold deposit was estimated by 3 times of power inverse ratio method.The estimation，verification and analysis of the results of the three-dimensional model gold deposit were carried out by generating grade change trend curves of No.1-1 and No.1-2 orebodies in different directions and depths.The three-dimensional visualization of Guilaizhuang gold orebody is realized through modeling，which is of great significance for guiding mine production design.In addition，by analyzing model results，a layer of mineralization body was found on the unconformity surface in the deep part，which provides a direction for further deep prospecting.The three-dimensional visualization geological model and location analysis results based on Surpac software have important reference value for Guilaizhuang gold deposit and its peripheral prospecting and exploration work.

Key words: Guilaizhuang gold mine, 3D geological model, Surpac software, model verification, Mofanggou gold deposit, distance inverse power ratio method

CLC Number: 

  • P618.51

Fig.1

Regional geological structure map"

Table 1

Structure of drilling data base"

数据表名称数据主要字段
孔口坐标表钻孔号、Y坐标、X坐标、Z坐标（孔深）
测斜表钻孔号、孔深、倾角、方位角
地质岩性表钻孔号、岩性分段起点、岩性分段终点、岩性代码
样品分析表钻孔号、采样起点、采样终点、金银等品位

Fig.2

Stratigraphic map of Guilaizhuang gold deposit"

Table 2

Borehole database structure"

金品位/(×10-6)显示颜色注释
0.2~1.0黄绿色金矿化体边界品位
1.0~2.5红色金边界品位
>2.5蓝色金最低工业品位

Fig.3

Orebody interpretation line"

Fig.4

Solid model of orebody in Guilaizhuang gold deposit"

Fig.5

Block model of orebody in Guilaizhuang gold deposit（top view）"

Fig.6

Curve of gold grade and ore volume with height variation of No.1-1 orebody in Guilaizhuang gold deposit"

Fig.7

Grade distribution diagram of bulk model in Guilaizhuang gold deposit（Scattered cloud display）"

Fig.8

Curve of gold grade and ore volume with east-west axis of No.1-2 ore body in Guilaizhuang gold deposit"

Fig.9

Solid model of 1-2 orebody in Guilaizhuang gold deposit"

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