Re-Os同位素体系及其在岩浆Cu-Ni-PGE矿床研究中的应用

李文渊

doi:10.11867/j.issn.1001-8166.1996.06.0580

地球科学进展 >

1996 , Vol. 11 >Issue 6: 580 - 584

DOI: https://doi.org/10.11867/j.issn.1001-8166.1996.06.0580

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Re-Os同位素体系及其在岩浆Cu-Ni-PGE矿床研究中的应用

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甘肃省地质矿产局　兰州　730000

李文渊,男,1962年9月出生,高级工程师,主要从事矿床地球化学研究。

收稿日期: 1996-03-25

修回日期: 1996-05-29

网络出版日期: 1996-11-01

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Re-Os ISOTOPIC SYSTEM AND ITS APPLICATION TO STUDY OF MAGMATIC Cu-Ni-PGE DEPOSIT

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Gansu Bureau of Geology and Mineral Resources, Lanzhou, 730000

Received date: 1996-03-25

Revised date: 1996-05-29

Online published: 1996-11-01

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摘要

Re-Os同位素由于其较高的半衰期特点，近年来国外广泛用于前寒武纪含Cu-Ni-PGE镁铁—超镁铁岩成岩年龄测定，并结合其他地球化学数据，对壳幔岩浆源及作用进行解释研究。特别是由于Os是６个PGE的其中之一，而多用于岩浆Cu-Ni-PGE矿床贵金属来源的判别。中国岩浆Cu-Ni-PGE矿床以金川矿床为代表，已有的研究表明，可能存在岩浆混合成矿作用，开展Re-Os同位素体系的研究将会提供进一步判断的证据。

关键词： Re－Os同位素; 岩浆; Cu－Ni－PGE; 矿床; 岩浆混合成矿作用

本文引用格式

李文渊 . Re-Os同位素体系及其在岩浆Cu-Ni-PGE矿床研究中的应用[J]. 地球科学进展, 1996 , 11(6) : 580 -584 . DOI: 10.11867/j.issn.1001-8166.1996.06.0580

Abstract

In this paper an introduction to Re Os isotopic system and its application to study of Cu Ni PGE deposit related to mafic ultramafic rock in the world is made. Re Os isotopic system, recently, is widely used in dating of precambrian bearing Cu Ni PGE mafic ultramafic rocks in terms of its high half life, explaining magmatic sources and evolution in combincation with other geochemical data. Moreover, Os, as one of 6 PGE, is frequently applied to the study of the origin of precious metals in magmatic Cu Ni PGE deposits. The author suggests that the Jinchuan, one of the largest magmatic Cu Ni sulfide deposits, may have occurred magma mixing during forming ore, and that the research of Re Os isotopic systematics to this ore deposit should be carred on in order to get further judgements.

Key words： Re Os isotopic systematics; Magmatic Cu Ni PGE deposit; Magma mixing

参考文献

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[6]Lambert D D, Shirey S B, Carlson RW，et al. Re-Os and Sm-Nd isotopic systematics of lamproites and basalts from the evolution of Proterozoic subcontinental lithospheric mantle. Trans Amer Ceophy Union, 1991, 72: 543.
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[8]李文渊.中国岩浆铜镍矿床形成特点与勘查对策，见:中国科协第二届青年学术年会论文集(6).北京:科学技术出版社，1995.

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