| 郭健.广西昭平县湾岛金矿控矿条件调查研究与靶区预测[J].地质与勘探,2011,47(2):163-169 |
| 广西昭平县湾岛金矿控矿条件调查研究与靶区预测 |
| Investigation of Ore-control Conditions and Prospecting Target Prediction for theWandao Gold Deposit in Zhaoping County, Guangxi Province |
| 投稿时间：2010-09-27 修订日期：2010-11-02 |
| DOI： |
| 中文关键词: 桂东大 山矿集区 花岗斑岩体 构造破碎带 控矿条件 |
| 英文关键词: Dayaoshan gold deposit, granite porphyry, structural fractural zone, ore-control condition |
| 基金项目:中国冶金地质总局风险勘查项目(编号:fx200910)。 |
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| 中文摘要: |
| [摘要]本文以桂东大瑶山金矿集区最新勘探发现的广西昭平湾岛金矿为例,对其开展控矿条件
调查研究,发现该矿床的金矿体有两种类型,分别受到花岗斑岩体、构造破碎带控制,斑岩体锆石U-Th-
Pb 年龄(465Ma)与构造破碎带控制的含金石英脉Ar-Ar 年龄(187郾87 ~ 244郾88Ma) 的明显差异也说明
多种矿化类型的存在。弄清以上两个控矿条件的分布是下一步找矿的关键,通过物化探资料分析,总结
找矿标志,提出了矿区外围3 个找矿靶区并得到钻探验证。本文所介绍的金矿评价方法对大瑶山金矿
集区的勘查找矿工作有重要的参考意义。 |
| 英文摘要: |
| Abstract:The Wandao gold deposit in Zhaoping County, Guangxi is a newly discovered deposit in the Dayaoshan gold mineralization area in eastern
Guangxi Province. In this study, we take it as an example to research its ore-controlling conditions. It is found that the two types of the gold orebodies are
controlled by granite porphyry and structural structural fractured zones respectively. Formation of the ore bodies needs some space, so the survey about ore鄄
body爷s spatial occurrence and formation conditions is a useful method during exploration. For the porphyry, the zircon U-Th-Pb age is 465Ma, and gold
bearing quartz veins controlled by structural fractured zones has the Ar-Ar age 187. 87-244. 88Ma. The considerable difference in these ages indicats the
existence of various types of mineralization. So, to clarify the distribution of the two controlling conditions is the key for the next stage of exploration. By
analyzing geophysical and geochemical data, and summarizing the prospecting indicators, we have suggested three prospective zones which have been veri鄄
fied by drillings. which confirmed our thoughts. The assessment method of gold deposits presented in this paper is of great importance to the further survey
and ore-search work in the Dayaoshan gold deposit area. |
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