The molybdenite Re-Os dating from the Nianzigou Mo deposit, Inner Mongolia and its geological significance.

被引：0
|
作者：
Zhang ZuoLun [1 ,2 ]
Zeng QingDong [1 ]
Qu WenJun [3 ]
Liu JingMing [1 ]
Sun XingGuo [1 ,2 ]
Zhang RuiBin [1 ,2 ]
Chen WeiJun [1 ,2 ]
Qin Feng [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[3] Natl Res Ctr Geoanal, Beijing 100037, Peoples R China
来源：
ACTA PETROLOGICA SINICA | 2009年 / 25卷 / 01期
关键词：
Re-Os isotopic dating; Nianzigou Mo deposit; Xilamulun molybdenum metallogenic belt; Inner Mongolia; CU-MO; RHENIUM;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The Nianzigou Mo deposit, Inner Mongolia, is a recently discovered large-quartz veins type Mo deposit. Six samples of molybdenite for Re-Os isotopic dating are analyzed and the model ages obtained from 150.2 +/- 2.2 to 154.4 +/- 2.2Ma, averaging 152.4 +/- 1.3Ma(2 sigma MSWD=1.6), and a good isochronic age of 154.3 +/- 3.6Ma(2 sigma, MSWD=1.9). It is indicated that the Nianzigou Mo deposit was formed in the Late Jurassic which belongs to the large-scale Yanshan molybdenum metallogenic period, and the tectonic settings are Mesozoic tectonic regime transformation of eastern China. The Re contents of the molybdenite are 12.6X10(-6) to 37.0x10(-6), averaging 24.9X10(-6). According to the contents of Re in Nianzigou and contrasting with other molybdenum-bearing deposits, we consider the ore-forming materials of Nianzigou Mo deposit are derived from the crust-mantle mixed source and mainly from the crustal source.
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页码：212 / 218
页数：7
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