| 岩浆溶离型Cu—Ni硫化物矿床元素组合和地球化学评价指标 |
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| 引用本文： | 刘崇民,李应桂.岩浆溶离型Cu—Ni硫化物矿床元素组合和地球化学评价指标[J].地质与勘探,2001,37(5):6-9. |
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| 作者姓名： | 刘崇民 李应桂 |
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| 作者单位： | 中国地质科学院物化探研究所 |
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| 摘 要： | 铜镍矿床的地球化学勘查评价实质上是基性－超基性岩体含矿性的评价。岩浆铜镍硫化物矿床与基性、超基性岩体具有空间和成因联系，其主要成晕微量元素以Cu、Ni、Co、Cr、Ag为主，而且含矿岩体的这些元素的平均值高、离差大。矿床区域地球化学异常发育，异常的分布受基性－超基性岩岩群和岩带制约，异常浓集中心与矿田的岩矿体一致。矿区异常继承了区域异常的组分，异常的高值区与矿床对应。矿床的原生晕具有组分分带，前缘元素是I、F、B、Ba、As、Mo；近矿元素是Ag、Cr；矿元素是Cu、Ni、Co。利用原生晕的组分分带特征可判断矿体的剥蚀程度和预测隐伏的岩矿体。
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| 关 键 词： | 铜镍矿床 地球化学特征 组分分带 评价指标 原生晕 剥蚀程度 |
| 文章编号： | 0495-5331(2001)05-0006-04 |
| 修稿时间： | 2000年7月8日 |
ELEMENT ASSOCIATION AND GEOCHEMICAL EVALUTION INDICATOR FOR CU-NI SULFIDE DEPOSIT OF MAGMATIC SEGREGATION STYLE |
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| LIU Chong-min,LI Ying-gui.ELEMENT ASSOCIATION AND GEOCHEMICAL EVALUTION INDICATOR FOR CU-NI SULFIDE DEPOSIT OF MAGMATIC SEGREGATION STYLE[J].Geology and Prospecting,2001,37(5):6-9. |
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| Authors: | LIU Chong-min LI Ying-gui |
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| Abstract: | Cu-Ni sulfide deposits of magmatic segregation style are related with basic and ultrabasic rocks in spatial and genetic. The major element halos of the deposit are Cu,Ni,Co,Cr,Ag with high mean and standard deviation in ore-bearing rock mass. Regional geochemistry anomaly in mining deposit was well-developed, and anomaly distribution is controlled by sill and swarm of basic and ultrabasic rock. The strong anomaly of the element is coincided with ore-bearing bodies in the orefield. The concentration center of the anomaly is coincided with mineral deposit. The primary halo of mineral deposit has vertical zoning of the elements, with I,F,B,Ba,As,Mo as front elements,with Ag,Cr as near element of deposit,and Cu,Ni and Co as mine razing element.The zoning rules of primary halos of the elements could be used to discriminate denuding level of the ore body, and to predict ore-bearing rock mass. |
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| Keywords: | Cu-Ni sulfide deposit geochemical element association evaluation indicator |
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