黑龙江省大兴安岭岔路口钼多金属矿床围岩蚀变特征
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摘要
斑岩型钼矿床围岩蚀变分带特征,是重要的找矿标志。在前人研究的基础上,总结了黑龙江省大兴安岭岔路口钼多金属矿床的围岩蚀变分带特征。围绕主成矿岩体——含斑细粒花岗岩和花岗斑岩体由内向外划分为4个蚀变带:(石英-)钾长石化带(Q-Kf)、石英-绢云母-水白云母化带(Q-S-H)、泥化带(伊利石-水白云母-黏土-弱硅化带)(Q-I-H)、青磐岩化带(C-E-Cc)。探讨了蚀变与矿化的关系。强硅化与早期交代的石英-钾长石化带叠加部位,赋存高品位钼矿体;中期交代的石英-绢云母化带叠加石英-钾长石化带部位,赋存层状钼矿体;强硅化叠加晚期交代的青磐岩化带-泥化带部位,赋存独立脉状铅锌矿脉(化)。正确划分蚀变带对区域上寻找斑岩型钼(铜)矿床具有参考价值。
Characteristics of wall rock alteration of the porphyry type molybdenum mineral is one of the important prospecting criterion.Based on the previous research,characteristics of wall rock alteration of Chalukou molybdenum polymetallic deposit in Heilongjiang Greater Khingan Range was summarized.The alteration zone in the main metallogenetic granites(such as porphyritic fine-grained granite and porphyry)is divided into four parts from the inner outward:(quartz-)K feldsparization zone,quartz-sericite-hydromuscovite zone,argillization zone,and the propylitic zone.The results of the study on the relationship between the alteration and mineralization showed that,in the superimposed parts of intense-silicified and the early quartzK feldsparization zone there exist the high-grade molybdenum orebodies;in the superimposed parts of the metaphase quartz-sericite zone and the quartz-K feldsparization zone there exist the layered molybdenum orebodies;in the superimposed parts of the intense-silicified and the late argillization zone-propylitic zone there exist the independent vein zinc orebodies.Correctly dividing the alteration zone is valuable for finding porphyry molybdenum(copper)deposits on the area.
Characteristics of wall rock alteration of the porphyry type molybdenum mineral is one of the important prospecting criterion.Based on the previous research,characteristics of wall rock alteration of Chalukou molybdenum polymetallic deposit in Heilongjiang Greater Khingan Range was summarized.The alteration zone in the main metallogenetic granites(such as porphyritic fine-grained granite and porphyry)is divided into four parts from the inner outward:(quartz-)K feldsparization zone,quartz-sericite-hydromuscovite zone,argillization zone,and the propylitic zone.The results of the study on the relationship between the alteration and mineralization showed that,in the superimposed parts of intense-silicified and the early quartzK feldsparization zone there exist the high-grade molybdenum orebodies;in the superimposed parts of the metaphase quartz-sericite zone and the quartz-K feldsparization zone there exist the layered molybdenum orebodies;in the superimposed parts of the intense-silicified and the late argillization zone-propylitic zone there exist the independent vein zinc orebodies.Correctly dividing the alteration zone is valuable for finding porphyry molybdenum(copper)deposits on the area.
引文
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[3]王建平,韩龙,吕克鹏.大兴安岭岔路口钼多金属矿床地质特征[J].矿产与地质,2011,25(6):486-490.
[4]齐大伟.黑龙江省岔路口钼多金属矿地质特征分析[D].长春:吉林大学,2014.
[5]付瑞忠,阚学胜,孟昭君,等.黑龙江省大兴安岭岔路口斑岩型钼多金属矿地质特征[J].矿产勘查,2011,2(3):232-240.
[6]刘军,武广,王峰,等.黑龙江省岔路口斑岩钼矿床流体包裹体和稳定同位素特征[J].中国地质,2013,40(4):1231-1251.
[7]胡新露.大兴安岭北段-小兴安岭地区斑岩型铜、钼矿床成矿作用与岩浆活动[D].武汉:中国地质大学(武汉),2015.
[8]李宪臣,胡文岭.大兴安岭多布库尔河钼多金属矿床地质特征及找矿远景[J].矿产与地质,2010,24(5):391-394..
[9]袁见齐,朱上庆,翟裕生.矿床学[M].北京:地质出版社,1979.
[10]黑龙江省有色金属地质勘查706队.岔路口钼多金属矿床勘探报告[R].2012.
[11]黑龙江省地质局.黑龙江省区域地质志[M].北京:地质出版社,1993.
[12]张寿庭.成矿规律与成矿预测研究中若干问题与展望[M]//矿床学理论与实践,北京:科学出版社,2004.
[13]万天丰.中国大地构造学纲要[M].北京:地质出版社,2004.
[14]芮宗瑶,黄嵩轲,齐国明,等.中国斑岩铜(钼)矿床[M].北京:地质出版社,1984.
[15]季克俭,吕凤翔.交代热液成矿学说-热液矿床成因的佐证[M].北京:地质出版社,2007.