| 黑龙江穆棱砍椽沟钼铜矿床地质与地球化学特征 |
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| 引用本文： | 刘莉,杨言辰,杨兆武,韩世炯.黑龙江穆棱砍椽沟钼铜矿床地质与地球化学特征[J].世界地质,2010,29(3):413-418. |
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| 作者姓名： | 刘莉 杨言辰 杨兆武 韩世炯 |
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| 作者单位： | 1． 吉林大学地球科学学院，长春130061; 2． 吉林大学地质博物馆，长春130026; 3． 黑龙江省地球物理勘查院，哈尔滨150036 |
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| 基金项目： | 中国地质调查局大调查项目 |
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| 摘 要： | 砍椽沟钼铜矿床位于佳木斯—牡丹江多金属成矿带的南东段,钼铜矿化产于花岗闪长岩和花岗斑岩岩体中。矿床主量元素分析结果表明,成矿岩体具高Sr、Na、K和低Y、Mg,显示出钙碱质岩浆演化特点,应属C型埃达克岩;微量元素测试结果显示本区花岗质岩石亏损Nb、Nd等高场强元素,富集Rb、Ba等大离子亲石元素,同时表明矿区的花岗质岩石具有埃达克岩属性;稀土元素组成具有轻微负Eu异常的特点,表明斜长石发生一定程度的分离结晶作用,或曾受到斜长石分离结晶作用的影响,且岩浆为地壳来源,在岩浆岩源区存在着一定数量的石榴石残留。矿床属斑岩型--热液脉型成因,成矿岩体的形成与太平洋板块俯冲作用关系密切。
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| 关 键 词： | 钼铜矿床 地质特征 地球化学特征 砍椽沟 穆棱 |
Geological and geochemical characteristics of Kanchuangou Mo-Cu deposit in Muling of Heilongjiang |
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| LIU Li,YANG Yan-chen,YANG Zhao-wu,HAN Shi-jiong.Geological and geochemical characteristics of Kanchuangou Mo-Cu deposit in Muling of Heilongjiang[J].World Geology,2010,29(3):413-418. |
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| Authors: | LIU Li YANG Yan-chen YANG Zhao-wu HAN Shi-jiong |
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| Institution: | 1． College of Earth Sciences，Jilin University，Changchun 130061，China; 2． Museum of Geology，Jilin University，Changchun 130026，China; 3． Geophysical Exploration Institute of Heilongjiang Province，Harbin 150036，China |
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| Abstract: | Kanchuangou Mo-Cu deposit is located in the southeast part of Mudanjiang-Jiamusi polymetallic metallogenic belt,and the mineralization of Cu-Mo formed in granodiorite and granite-porphyry.The research of major elements indicated that ore forming intrusive rock has high Sr,Na,K and low Y,Mg,possessing the characteristics of calc-alkali magma evolution,and belonged to C-type adakites.The test of trace elements showed that the local granite lacked of HFS elements as Nb and Nd,relatively enriched in lithophile element as Rb and Ba,also showed the adakitic attribute of the granite rock in this area.The composition of rare earth elements has slight negative Eu abnormal,showing a certain degree fractional crystallization,or ever affection of the plagioclase fractional crystallization occurred in the plagioclase,and magma was the crust source,and a certain amount of garnet residual existed in the magma source.This deposit is porphyry-hydrothermal vein in type,and its formation closely related to the subduction of the Pacific Plate. |
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| Keywords: | Mo-Cu deposit geological characteristics geochemical characteristics Kanchuangou Muling |
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