内蒙古敖仑花斑岩型钼铜矿床地质特征及成因探讨

敖仑花钼铜矿床是近年来新发现的大型斑岩型钼铜矿床,该矿床钼铜矿化多产于敖仑花岩体内及外接触带的角岩中,矿化类型主要为细脉浸染状。矿石矿物为辉钼矿、黄铜矿、黄铁矿、闪锌矿、方铅矿等。敖仑花岩体为中酸性的花岗闪长斑岩体,岩石SiO2、Al2O3、K、Na含量较高,Na2O/K2O比值在1.1～2.1之间,σ值在3～3.7之间,A/CNK值小于1,0.68～0.82,属于偏钠质的高钾钙碱性Ⅰ型花岗岩。矿床的围岩蚀变类型从中心向外依次为石英-钾硅酸化、石英-绢云母化、角岩化,其中钾硅酸盐化和绢云母化叠加带与钼矿化空间分布关系密切;据包裹体测温结果显示,该矿床成矿温度和盐度较高,属于中高温热液斑岩型钼矿...

Full description

Saved in:
Bibliographic Details
Published in地质与勘探 Vol. 47; no. 5; pp. 737 - 747
Main Author 邹滔 王京彬 王玉往 袁继明 林龙军 窦金龙 蒋炜 李伟 马星华
Format Journal Article
LanguageChinese
Published 2011
Subjects
内蒙古
地质特征
敖仑花
斑岩型钼铜矿床
Online AccessGet full text
ISSN0495-5331

Cover

More Information
Summary:敖仑花钼铜矿床是近年来新发现的大型斑岩型钼铜矿床,该矿床钼铜矿化多产于敖仑花岩体内及外接触带的角岩中,矿化类型主要为细脉浸染状。矿石矿物为辉钼矿、黄铜矿、黄铁矿、闪锌矿、方铅矿等。敖仑花岩体为中酸性的花岗闪长斑岩体,岩石SiO2、Al2O3、K、Na含量较高,Na2O/K2O比值在1.1～2.1之间,σ值在3～3.7之间,A/CNK值小于1,0.68～0.82,属于偏钠质的高钾钙碱性Ⅰ型花岗岩。矿床的围岩蚀变类型从中心向外依次为石英-钾硅酸化、石英-绢云母化、角岩化,其中钾硅酸盐化和绢云母化叠加带与钼矿化空间分布关系密切;据包裹体测温结果显示,该矿床成矿温度和盐度较高,属于中高温热液斑岩型钼矿床。矿区硫化物的δ34S值变化范围较小,介于-1.2‰～3.5‰,平均为1.78‰,结合岩浆岩演化等特征表明,成矿作用与中酸性含矿斑岩关系密切,并可能受幔源岩浆混合作用的影响。
Bibliography:11-2043/P
porphyry Cu-Mo deposit; geologic characteristics; Aolunhua; Inner Mongolia
ZOU Tao1,2,WANG Jing-bin2,3,WANG Yu-wang2,3,YUAN Ji-ming3, LIN Long-jun3,DOU Jin-long3,JIANG Wei3,LI Wei3,MA Xing-hua4 1.Faculty of Land Resource Engineering,Kunming University of Science and technology,Kunming,Yunnan 650093; 2.Beijing Institute of Geology for Mineral Resources,Beijing 100012;3.China Non-ferrous Metal Resources Geological Survey,Beijing 100012;4.School of Earth and Space Sciences,Peking University,Beijing 100871
The Aolunhua mine is a large-scale porphyry Mo-Cu deposit newly discovered in recent years.The molybdenum mineralization of this deposit occurs primarily within the Aolunhua porphyritic granitoid stock and hornfelsed in the outer contact zone,which are veins,veinlets and disseminated blocks.The ore mineral consists of molybdenite,chalcopyrite,pyrite,sphalerite,and galena.The major elements of the Aolunhua rock show high SiO2、Al2O3、K、Na contents,with ratio of Na2O/K2O between 1.1～2.1,the value of σ betwee
ISSN:0495-5331