青海省祁连县黑刺沟金矿地质特征及找矿前景
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摘要
黑刺沟金矿区位于托莱山成矿带之中西部,区内NWW,NW,近NE向断裂及次级构造发育;成矿地质背景良好。为查明区内成矿地质条件,扩大找矿前景,采用激电中梯测量与探矿工程相结合的方法,圈定了8条矿化蚀变体13条金矿体,其中⑤号矿体是区内主要矿体,金品位(1.05～3.42)×10~(-6),平均品位1.59×10~(-6)。矿体呈透镜状、脉状,产状与断裂构造蚀变带产状基本一致,含矿岩石为凝灰质碎裂岩、构造角砾岩,围岩为早奥陶世阴沟群片理化凝灰岩、安山质凝灰岩,围岩蚀变主要为硅化、黄铁矿化、碳酸盐化、褐铁矿化。该文在阐述黑刺沟金矿床地质特征的基础上,总结了找矿标志和控矿因素,认为找矿潜力较大。
Heicigou gold deposit is located in the midwest of Tuolaishan metallogenic belt. Fractures and secondary structures with the trend of NWW, NW and nearly NE are well developed in the area with good geological background of mineralization. In order to identify metallogenic geological conditions and expand the prospecting prospects, by using the combination of IP ladder measurement and prospecting project, 8 altered bodies and 13 gold ore bodies have been circled. Among them, No. 5 ore body is the main ore body in the area. The gold grade is(1.05～3.42) ×10~(-6) and average grade is 1.59×10~(-6). The ore bodies are lenticular and vein-shaped, and their attitudes are basically the same as those of the fracture structural alteration zones. The ore-bearing rocks are tuffaceous cataclastic rocks and structural breccia. The wall rocks are foliated tuff and andesitic tuff of early Ordovician Yingou group. The wall rock alteration is mainly silicification, pyritization, carbonation and ferritization. On the basis of expounding geological characteristics of Heicigou gold field, prospecting indicators and ore-controlling factors have been summarized, and prospecting prospect has been analyzed.
Heicigou gold deposit is located in the midwest of Tuolaishan metallogenic belt. Fractures and secondary structures with the trend of NWW, NW and nearly NE are well developed in the area with good geological background of mineralization. In order to identify metallogenic geological conditions and expand the prospecting prospects, by using the combination of IP ladder measurement and prospecting project, 8 altered bodies and 13 gold ore bodies have been circled. Among them, No. 5 ore body is the main ore body in the area. The gold grade is(1.05～3.42) ×10~(-6) and average grade is 1.59×10~(-6). The ore bodies are lenticular and vein-shaped, and their attitudes are basically the same as those of the fracture structural alteration zones. The ore-bearing rocks are tuffaceous cataclastic rocks and structural breccia. The wall rocks are foliated tuff and andesitic tuff of early Ordovician Yingou group. The wall rock alteration is mainly silicification, pyritization, carbonation and ferritization. On the basis of expounding geological characteristics of Heicigou gold field, prospecting indicators and ore-controlling factors have been summarized, and prospecting prospect has been analyzed.
引文
[1]徐志刚,陈毓川.中国成矿区划分方案[M].北京:地质出版社,2008:6-23.
[2]青海省地质矿产局.青海省区域地质志[M].北京:地质出版社,1991:20-43.
[3]翟裕生,邓军,李晓波.区域成矿学[M].北京:地质出版社,1999:30-39.
[4]袁万明,莫宣学,喻学惠,等.东昆仑热液金成矿带及其找矿方向[J].地质与勘探,2000,36(5):20-23.
[5]伊有昌,陈树云,文雪峰.青海北祁连松树南沟造山型金矿床地质特征和矿床成因[J].黄金地质,2006,27(10):16-19.
[6]张伟,刘铭,马昭建,等.青海省都兰县瑙木浑沟口金矿区地质特征及找矿方向[J].山东国土资源,2014,30(2):7-10.
[7]李军,陆林祥,张英梅,等.青海省都兰县乌拉斯太沟口金矿区地质特征及找矿前景[J].山东国土资源,2016,32(9):1-6.
[8]窦全成.青海省祁连县陇孔沟小型金矿床成因探讨[J].西北探矿工程,2006,18(zl):191-192.
[9]郑振华,窦全成,薛万文.青海省祁连县陇孔沟金矿床特征和成因浅析[J].青海国土经略,2005(2):33-36.
[10]汤中立,白运来,徐辛华,等.华北古陆西南(龙首山-祁连山)成矿系统及成矿构造动力学[M].北京:地质出版社,2002:2-23.
[11]马振东,龚鹏,龚敏,等.中国铜矿地质地球化学找矿模型及地球化学定量预测方法研究[M].武汉:中国地质大学出版社,2014:312-405.
[12]贾群子,杨钟堂,肖朝阳,等.祁连成矿带成矿规律和找矿方向[J].西北地质2006,39(2):96-113.
[13]顾瑛,詹民余,易平乾,等.青海南祁连成矿带北缘东段金成矿环境与找矿前景分析---以刚察县纳耳扎地区为例[J].西北地质,2007,40(4):27-35.
[14]岳正明,岳子钦.南祁连采特矿区金矿床源岩判别与矿床特征[J].四川地质学报,2014,34(1):64-68.
[15]单娜琳,电法勘探在微细粒型金矿找矿中的应用[J].地质与勘探,2003,39(S1):40-42.
[16]徐岩.甘肃分水岭地区银矿找矿方向[J].甘肃冶金,2004,26(2):45-46.
[17]安国堡,辛存林.北祁连冷龙岭中东段---毛毛山地区金矿化地质特征[J].甘肃科技,2005,21(2):114-116.
[18]徐善法,张汉成,陈建平,等.青海龙尾沟铜金矿床地质特征、矿床成因及成矿远景分析[J].地质与勘探,2004,40(1):12-17.
[19]陈毓川,叶天竺,张洪涛,等.中国主要成矿区带矿产资源远景评价[M].北京:地质出版社,1999:30-43.
[20]刘同,李兆营,刘卫东,等.青海鄂拉山地区水系沉积物地球化学特征及找矿方向[J].山东国土资源,2015,31(9):12-17.
[21]王飞,燕宁,赵萍,等.北祁连大坂山地质与地球化学特征及成矿预测[J].矿床勘查,2012,3(1):63-68.
①山东省鲁南地质工程勘察院,青海省祁连县黑刺沟金矿普查工作总结,2015年。
(1)青海省地球物理勘查技术研究院,青海省祁连山幅1∶20万水系沉积物测量报告,1994年。
[2]青海省地质矿产局.青海省区域地质志[M].北京:地质出版社,1991:20-43.
[3]翟裕生,邓军,李晓波.区域成矿学[M].北京:地质出版社,1999:30-39.
[4]袁万明,莫宣学,喻学惠,等.东昆仑热液金成矿带及其找矿方向[J].地质与勘探,2000,36(5):20-23.
[5]伊有昌,陈树云,文雪峰.青海北祁连松树南沟造山型金矿床地质特征和矿床成因[J].黄金地质,2006,27(10):16-19.
[6]张伟,刘铭,马昭建,等.青海省都兰县瑙木浑沟口金矿区地质特征及找矿方向[J].山东国土资源,2014,30(2):7-10.
[7]李军,陆林祥,张英梅,等.青海省都兰县乌拉斯太沟口金矿区地质特征及找矿前景[J].山东国土资源,2016,32(9):1-6.
[8]窦全成.青海省祁连县陇孔沟小型金矿床成因探讨[J].西北探矿工程,2006,18(zl):191-192.
[9]郑振华,窦全成,薛万文.青海省祁连县陇孔沟金矿床特征和成因浅析[J].青海国土经略,2005(2):33-36.
[10]汤中立,白运来,徐辛华,等.华北古陆西南(龙首山-祁连山)成矿系统及成矿构造动力学[M].北京:地质出版社,2002:2-23.
[11]马振东,龚鹏,龚敏,等.中国铜矿地质地球化学找矿模型及地球化学定量预测方法研究[M].武汉:中国地质大学出版社,2014:312-405.
[12]贾群子,杨钟堂,肖朝阳,等.祁连成矿带成矿规律和找矿方向[J].西北地质2006,39(2):96-113.
[13]顾瑛,詹民余,易平乾,等.青海南祁连成矿带北缘东段金成矿环境与找矿前景分析---以刚察县纳耳扎地区为例[J].西北地质,2007,40(4):27-35.
[14]岳正明,岳子钦.南祁连采特矿区金矿床源岩判别与矿床特征[J].四川地质学报,2014,34(1):64-68.
[15]单娜琳,电法勘探在微细粒型金矿找矿中的应用[J].地质与勘探,2003,39(S1):40-42.
[16]徐岩.甘肃分水岭地区银矿找矿方向[J].甘肃冶金,2004,26(2):45-46.
[17]安国堡,辛存林.北祁连冷龙岭中东段---毛毛山地区金矿化地质特征[J].甘肃科技,2005,21(2):114-116.
[18]徐善法,张汉成,陈建平,等.青海龙尾沟铜金矿床地质特征、矿床成因及成矿远景分析[J].地质与勘探,2004,40(1):12-17.
[19]陈毓川,叶天竺,张洪涛,等.中国主要成矿区带矿产资源远景评价[M].北京:地质出版社,1999:30-43.
[20]刘同,李兆营,刘卫东,等.青海鄂拉山地区水系沉积物地球化学特征及找矿方向[J].山东国土资源,2015,31(9):12-17.
[21]王飞,燕宁,赵萍,等.北祁连大坂山地质与地球化学特征及成矿预测[J].矿床勘查,2012,3(1):63-68.
①山东省鲁南地质工程勘察院,青海省祁连县黑刺沟金矿普查工作总结,2015年。
(1)青海省地球物理勘查技术研究院,青海省祁连山幅1∶20万水系沉积物测量报告,1994年。