| 彭丽娜.浙东南怀溪铜金矿床黄铁矿标型特征及其地质意义[J].地质与勘探,2009,45(5):577-587 |
| 浙东南怀溪铜金矿床黄铁矿标型特征及其地质意义 |
| Typomorphic Characteristics of Pyrites in the Huaixi copper-gold deposit,Southeastern Zhejiang Province and its Geological Significance |
| 投稿时间：2009-07-23 修订日期：2009-08-01 |
| DOI： |
| 中文关键词: 黄铁矿 标型特征 矿床成因 找矿前景 怀溪铜金矿床 浙江 |
| 英文关键词: pyrite, typomorphic characteristics, ore genesis, prospecting potential, the Huaixi copper-gold deposit, Zhejiang province |
| 基金项目:教育部创新团队发展计划(编号: IRT0755)和全国危机矿山接替资源找矿项目(编号: No. 2007020047)资助。 |
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| 中文摘要: |
| [摘要]黄铁矿标型特征在各类矿床研究中提供丰富的矿床成因信息及有效的深部找矿信息。
怀溪矿床为浙东南政和-大埔大断裂和长乐-南澳大断裂间坳陷区内典型的热液脉状充填型Cu-Au 多
金属矿床,其黄铁矿具亏Fe 和S 的特点,棕(Fe) / 棕(S+As)平均值为0. 881,介于0. 863 与0. 926 之间,表
明该矿床为中浅成中温热液矿床。黄铁矿棕(Co) / 棕(Ni) 比值主要介于1 ~ 5,显示怀溪Cu-Au 矿床成
矿流体主要为岩浆热液。黄铁矿硫同位素啄34 S 值为-2. 14译~ +4. 14译(n=8),极差为6. 28译,平均值
为+1. 67译,硫源部分来自深源岩浆。黄铁矿热电系数、微量元素综合比值椎和As、Cu 含量、As+Ag+
Hg、Cu+Pb+Zn、Co+Ni 微量元素组合自地表向深部均显示减小寅增大寅减小的变化规律。结合前人的
研究成果,在深入研究黄铁矿标型特征的基础上认为该矿床深部具有一定的找矿前景。 |
| 英文摘要: |
| Abstract:Pyrite typomorphic characteristics provide abundant genetic informations and effective mineral prospecting messages at depths in the re鄄
search of varied deposits. The Huaixi deposit is located in a volcanic terrain between two major faults, the Zhenghe-Dapu and the Changle-Nan爷ao deep
faults in southeastern Zhejiang province, and is a typical vein-type hydrothermal copper-gold polymetallic deposit. That the 棕(Fe) / 棕(S+As) of pyrites
vary from 0. 863 to 0. 926 with a mean of 0. 881, combined with the depleted Fe and S characteristics suggesting this deposit formed in an environment of
shallow-moderate depth and moderate temperature. Ratios of 棕(Co) / 棕(Ni) is mainly between 1 and 5, which indicate that the magmatic hydrothermal
fluids are primary. 啄34 S values of 8 pyrites are from -2. 14译to +4. 14译, with a mean of +1. 67译and range of 6. 28译, which are similar to the mag鄄
matic sulfur. Pyrites thermoelectric coefficient, trace element aggregative ratios 椎, content of element As and Cu, trace elements assemblage of As+Ag+
Hg, Cu+Pb+Zn and Co+Ni together show the variation law of decreases寅increases寅decreases from lower to the deeper level. Based on researches of py鄄
rite typomorphic characteristics and combined with previously published data, authors evaluated potential of ore prospecting at depth of the Huaixi Cu-Au
deposit. |
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