| 海南省保亭县新村钼矿地质特征及成因探讨 |
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| 引用本文： | 王龙,廖香俊.海南省保亭县新村钼矿地质特征及成因探讨[J].华南地质与矿产,2012,28(3):203-212. |
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| 作者姓名： | 王龙 廖香俊 |
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| 作者单位： | 1. 中国地质大学地球科学学院,武汉,430074
2. 中国地质大学地球科学学院,武汉430074 海南省地质局,海口570206 |
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| 基金项目： | 野外工作期间得到海南省地质调查院矿产队的大力支持和帮助;Re-Os同位素分析由中国科学院广州地球化学研究所孙胜玲、孙亚莉完成;s同位素分析由中国地质大学(武汉)地质过程与矿产资源国家重点实验室王新君完成;H、O同位素由中国地质科学院矿产资源研究所李延河等完成;在此一并致以衷心的感谢 |
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| 摘 要： | 新村钼矿位于海南省保亭县境内,是在海南省发现的又一个达中型规模的钼矿床。矿体主要赋存在次火山岩带中,矿石类型主要有细脉浸染型和石英脉型两种。辉钼矿Re-Os测年研究获得95.6±0.89~97.8±0.5 Ma和112.3±4.2 Ma的模式年龄,表明矿区可能经历两期矿化,它们可能分别与保城岩体侵位和火山活动有关。硫同位素研究显示,主要的硫源为岩浆源。通过地质资料综合分析,表明新村钼矿为次火山岩容矿,为岩浆后期热液作用形成的热液脉型钼矿床。
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| 关 键 词： | 地质特征 辉钼矿Re-Os测年 矿床成因 新村钼矿床 海南保亭 |
Geological Characteristics and Genesis of Xincun Molybdenum Deposit in Baoting County, Hainan Province |
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| WANG Long,LIAO Xiang-Jun.Geological Characteristics and Genesis of Xincun Molybdenum Deposit in Baoting County, Hainan Province[J].Geology and Mineral Resources of South China,2012,28(3):203-212. |
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| Authors: | WANG Long LIAO Xiang-Jun |
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| Institution: | 1. Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China; 2. Geological Bureau of Hainan Province, Hainan 570206, China) |
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| Abstract: | The Xincun molybdenum deposit, located at the Baoting county, is another mid-sized deposit discovered in Hainan island. Molybdenum ores can be divided into quartz vein-type and veinlet- disseminated-type, which are hosted by subvoleanie rocks. Molybdenite separated from ores yield Re-Os model age of 95.6±0.89 - 97.8±0.5 Ma and 112.3±4.2 Ma, suggested that there had ever experienced two stages of molybdenum mineralization. The mineralization of former ages is considered to be related to the intrusion of Baocheng plutons, and the mineralization of older age is probably related to the Late-Yanshanian terrestrial faces volcanism during 122- 107 Ma. The measured δ34S values suggest that the formation of Mo ore-body is closely related to contemporary magmatism. Based on synthetic studies of geological and geochemical information, we consider that the Xineun Mo deposit is a volcanic-hosted deposit which is formed by the post-stage magmatic hydrothermal activity. |
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| Keywords: | geological characteristics molybdenite Re-Os dating ore genesis Xincun molybdenum deposit Baoting county Hainan province |
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