黔西南戈塘金矿成因再认识
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摘要
文章通过对戈塘金矿硅质角砾岩的地质特征、地球化学特征综合分析,认为矿区的角砾硅化灰岩、硅化黏土岩等蚀变地质体为热液成因,其中硅质来源可分为成岩期与成矿期:成岩期硅质来自热泉型生物沉积;成矿期硅质来自成矿流体。成矿流体是来源于深部流体与天水、地层建造水的混合作用形成的混合流体。根据矿石结构构造特征及含金蚀变地质体产状特征,结合在戈塘地区茅口组底部及以下地层中新近发现呈筒状产出的含金蚀变角砾岩,认为戈塘金矿矿区含金角砾岩具有隐爆角砾岩的特征,得出戈塘金矿成因类型可能为隐爆角砾岩型金矿的新认识。此认识可供黔西南金矿成矿理论研究、探讨新的找矿方向和成矿预测提供参考。
Based on the comprehensive analysis of geological and geochemical characteristics of siliceous breccia in Getang Au deposit it is considered that the silicified brecciated limestone and the silicified clay rock etc.in mining area are genetically the hydrothermally altered geological masses.The siliceous material was derived during the rock-forming and ore-forming stages.The siliceous material of the rock-forming stage comes from bio-sediments of hot spring water and that of the ore-forming stage from ore fluid.The ore fluid is derived from mixture of deep fluid,meteoric water and water trapped in formations.According to the ore structure and texture and the occurrence of the gold-bearing altered geological bodies and the recently discovered pipe-like gold-bearing altered breccia at bottom of Maokou formation and that in strata beneath the formation in Getang area it is considered that Getang Au deposit is genetically a crypto-explosion pipe type gold deposit.This is a new idea that will provide new metallogenic theory and reference for gold ore prospecting and prediction in the southwest Guizhou province.
Based on the comprehensive analysis of geological and geochemical characteristics of siliceous breccia in Getang Au deposit it is considered that the silicified brecciated limestone and the silicified clay rock etc.in mining area are genetically the hydrothermally altered geological masses.The siliceous material was derived during the rock-forming and ore-forming stages.The siliceous material of the rock-forming stage comes from bio-sediments of hot spring water and that of the ore-forming stage from ore fluid.The ore fluid is derived from mixture of deep fluid,meteoric water and water trapped in formations.According to the ore structure and texture and the occurrence of the gold-bearing altered geological bodies and the recently discovered pipe-like gold-bearing altered breccia at bottom of Maokou formation and that in strata beneath the formation in Getang area it is considered that Getang Au deposit is genetically a crypto-explosion pipe type gold deposit.This is a new idea that will provide new metallogenic theory and reference for gold ore prospecting and prediction in the southwest Guizhou province.
引文
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[2]范军.黔西南戈塘大型金矿床地质地球化学及成因研究[D].昆明:昆明理工大学,2015.
[3]董磊.贵州戈塘金矿床地质特征及成因研究[D].成都:成都理工大学,2015.
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[7]朱赖民,金景福,何明友,等.论深源流体参与黔西南金矿床成矿的可能性[J].地质论评,1997(6):586-592.
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[11]童远刚,陆建宝,刘浩,等.贵州安龙万人洞角砾岩型金矿产出特征及意义[J].中国金属通报,2016(5):34-36.
[12]毛德明,安树仁,张启厚,等.贵州西部峨眉山玄武岩及其有关矿产[M].贵阳:贵州科技出版社,1992:33-38.
[13]聂爱国.黔西南卡林型金矿的成矿机制及成矿预测[D].昆明:昆明理工大学,2007.
[14]陈懋弘,章伟,杨宗喜,等.黔西南白层超基性岩墙锆石SHRIMP U-Pb年龄和Hf同位素组成研究[J].矿床地质,2009,28(3):240-250.
[15]余大龙.从纳哥金矿地质地球化学特征探讨黔西南卡林型金矿成因[J].贵金属地质,1996,5(2):87-96.
[16]王砚耕,索书田,罗孝恒,等.黔西南构造与卡林型金矿[M].贵阳:贵州科技出版社,1994:89.
[17]倪师军,刘显凡,金景福,等.滇黔桂三角区微细粒浸染型金矿成矿流体地球化学[M].成都:成都科技大学出版社,1997:88-96.
[18]王泽鹏,夏勇,宋谢炎,等.黔西南灰家堡卡林型金矿田硫铅同位素组成及成矿物质来源研究[J].矿物岩石地球化学通报,2013,32(6):746-752+758.
[19]黄建国,李虎杰,李文杰,等.贵州戈塘金矿萤石微量元素特征及钐—钕测年[J].地球科学进展,2012,27(10):1087-1093.
[20]张聪,黄虎,侯明才.地球化学方法在硅质岩成因与构造背景研究中的进展及问题[J].成都理工大学学报(自然科学版),2017,44(3):293-304.
[21]刘帅,张培兴,熊灿娟,等.贵州戈塘金矿SBT地球化学研究[J].贵州大学学报(自然科学版),2013,30(5):43-48.
[22]毛光武,严卸平,舒文辉,等.隐爆角砾岩型金矿床的研究进展[J].地质找矿论丛,2016,31(3):396-408.
[2]范军.黔西南戈塘大型金矿床地质地球化学及成因研究[D].昆明:昆明理工大学,2015.
[3]董磊.贵州戈塘金矿床地质特征及成因研究[D].成都:成都理工大学,2015.
[4]高德黎,廖朝中.贵州G金矿的物源、成矿环境及找矿方向初析[J].贵州地质,1987(2):126-134.
[5]沈阳地质矿产研究所.中国金矿主要类型区域成矿条件文集·第六卷[C].北京:地质出版社,1989:1-85.
[6]朱恺军.戈塘金矿中含炭硅质角砾岩成因浅析[J].地质与勘探,1993(11):34-38.
[7]朱赖民,金景福,何明友,等.论深源流体参与黔西南金矿床成矿的可能性[J].地质论评,1997(6):586-592.
[8]杨科伍.戈塘式金矿床之成因及找矿远景初探—兼论紫木凼式金矿[J].贵州地质,1992(4):299-306.
[9]何丰胜,毛健全,杜定全.戈塘矿区层滑构造研究[J].贵州工业大学学报,1997(2):13-19.
[10]黄建国,李虎杰,李文杰,等.贵州戈塘金矿含矿岩系元素地球化学特征[J].中国地质,2012,39(5):1318-1326.
[11]童远刚,陆建宝,刘浩,等.贵州安龙万人洞角砾岩型金矿产出特征及意义[J].中国金属通报,2016(5):34-36.
[12]毛德明,安树仁,张启厚,等.贵州西部峨眉山玄武岩及其有关矿产[M].贵阳:贵州科技出版社,1992:33-38.
[13]聂爱国.黔西南卡林型金矿的成矿机制及成矿预测[D].昆明:昆明理工大学,2007.
[14]陈懋弘,章伟,杨宗喜,等.黔西南白层超基性岩墙锆石SHRIMP U-Pb年龄和Hf同位素组成研究[J].矿床地质,2009,28(3):240-250.
[15]余大龙.从纳哥金矿地质地球化学特征探讨黔西南卡林型金矿成因[J].贵金属地质,1996,5(2):87-96.
[16]王砚耕,索书田,罗孝恒,等.黔西南构造与卡林型金矿[M].贵阳:贵州科技出版社,1994:89.
[17]倪师军,刘显凡,金景福,等.滇黔桂三角区微细粒浸染型金矿成矿流体地球化学[M].成都:成都科技大学出版社,1997:88-96.
[18]王泽鹏,夏勇,宋谢炎,等.黔西南灰家堡卡林型金矿田硫铅同位素组成及成矿物质来源研究[J].矿物岩石地球化学通报,2013,32(6):746-752+758.
[19]黄建国,李虎杰,李文杰,等.贵州戈塘金矿萤石微量元素特征及钐—钕测年[J].地球科学进展,2012,27(10):1087-1093.
[20]张聪,黄虎,侯明才.地球化学方法在硅质岩成因与构造背景研究中的进展及问题[J].成都理工大学学报(自然科学版),2017,44(3):293-304.
[21]刘帅,张培兴,熊灿娟,等.贵州戈塘金矿SBT地球化学研究[J].贵州大学学报(自然科学版),2013,30(5):43-48.
[22]毛光武,严卸平,舒文辉,等.隐爆角砾岩型金矿床的研究进展[J].地质找矿论丛,2016,31(3):396-408.