| 北祁连西段镜铁山式铜矿预测要素及预测模型 |
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| 引用本文： | 杨合群,赵东宏,王永和,谭文娟,于浦生.北祁连西段镜铁山式铜矿预测要素及预测模型[J].现代地质,2009,23(2). |
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| 作者姓名： | 杨合群 赵东宏 王永和 谭文娟 于浦生 |
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| 作者单位： | 西安地质矿产研究所,陕西,西安,710054 |
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| 基金项目： | 国土资源部资源与环境科技攻关项目，国土资源部国情调查项目 |
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| 摘 要： | 在北祁连镜铁山地区,近年来发现了与中元古界条带状铁建造有关的破碎带蚀变岩型铜矿,如桦树沟铜矿床和柳沟峡铜矿床。分析了铜矿床的预测要素:矿源层为含铜条带状铁建造;有利于矿质活化的构造为透入性构造裂隙;热源为壳源岩浆活动;储矿构造为构造破碎蚀变带。建立了镜铁山式铜矿资源潜力预测的经验公式,对预测区铜远景资源潜力、铁矿石量、透入性构造裂隙发育程度和热源参数的取值分别进行探讨。据此公式估算,整个北祁连西段镜铁山式铜矿的铜金属资源潜力为147.3万t,其中镜铁山矿田铜资源潜力可达约125万t。实地考察也发现了新的找矿有利地段,因此有必要继续加大找矿力度。
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| 关 键 词： | 镜铁山式 破碎带蚀变岩型铜矿床 预测要素 预测模型 北祁连 |
Essential Factors and Model for Prediction of Jingtieshan-type Copper Deposits in the Western Segment of the North Qilian Mountains |
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| YANG He-qun,ZHAO Dong-hong,WANG Yong-he,TAN Wen-juan,YU Pu-sheng.Essential Factors and Model for Prediction of Jingtieshan-type Copper Deposits in the Western Segment of the North Qilian Mountains[J].Geoscience——Journal of Graduate School,China University of Geosciences,2009,23(2). |
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| Authors: | YANG He-qun ZHAO Dong-hong WANG Yong-he TAN Wen-juan YU Pu-sheng |
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| Abstract: | Altered rock type copper deposits of fracture zone connected with banded ferruginous formation of Mesoproterozoic group were found recently in Jingtishan area of North Qilian Mountains,for example,Huashugou and Liugouxia copper deposits.The essential factors were discussed in this paper.It is considered that the cupreous banded iron formation was source bed;pervasive fractures were favorable to mineral activities;the heat source was crustal magma activities;and structural fracture altered zone was ore-contained structure.The formula for quantitative forecast of Jingtieshan-type copper ore is built in this paper.The value of representative to the resource potential of copper,weight of ironstone,growth degree of pervasive fractures and thermal parameter are disscused.According to the aforementioned formula,the copper resource potential of Jingtieshan-type may be 1.473×106 tons in the western segment of North Qilian including up to 1.25×106 tons in the Jingtieshan ore field.The new favorable districts are discovered in our inspection,so the prospecting is necessary to continue in this area. |
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| Keywords: | Jingtieshan-type altered rock type copper deposit in fracture zone essential factors for prediction predictive model North Qilian Mountains |
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