| 李 希.基于三维矿化域数字模型对澳大利亚Camel 1金矿找矿预测研究[J].地质与勘探,2018,54(3):645-652 |
| 基于三维矿化域数字模型对澳大利亚Camel 1金矿找矿预测研究 |
| Prospecting prediction for Camel 1 gold mine in Australia based on a three-dimension digital model of the mineralization domain |
| 投稿时间：2016-11-03 修订日期：2017-06-20 |
| DOI：10.12134/j.dzykt.2018.03.020 |
| 中文关键词: 三维数字模型 矿化空间变化规律 找矿预测 澳大利亚 |
| 英文关键词: three-dimension?digital?model, space?variation?rule?of?mineralization,?prospecting?prediction, Australia |
| 基金项目:陕西省自然科学基金“矿床三维地质建模与隐伏矿体立体定量预测研究”（编号：2016JM4001）、中央高校基本科研业务费专项资金“重要成矿区带典型矿田构造与找矿预测示范”（编号：310827153408）联合资助 |
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| 中文摘要: |
| Camel 1金矿是澳大利亚Pilbara地台最重要的金矿之一，矿区地表被第四系风成沙和冲积物覆盖，地表矿化信息少，找矿难度大。鉴于此，在该矿区引入“数字矿山”技术手段，结合Camel 1金矿的地质特征，特别是控矿构造特征，使用Surpac软件，建立Camel 1金矿三维矿化域数字模型，综合研究金矿化空间分布规律。Camel 1矿床金矿化总体上沿Mallina韧性剪切带分布，且严格受Mallina韧性剪切控制；金矿化与后期北西向断裂关系密切，矿区在未来找矿工作中应该重视北西向构造，可能会有更好的找矿突破。本次通过对金矿化空间分布规律的研究以及其与构造之间的关系，在矿区圈定了三处找矿预测靶区。三维矿化域数字模型找矿预测方法工作成本低，可作为一种新的找矿思路在该区找矿工作中应用。 |
| 英文摘要: |
| The Camel 1 mine is one of the major gold deposits in the Mallina ductile shear zone of northwest Australia. As this mine is covered by Quaternary eolian sand and alluvium, little clue of mineralization is present on the surface, thus further ore-search is very difficult here. To solve this problem, the ‘digital mine’ technology was introduced to this mine. In combination with geological characteristics in this area, especially those of ore-controlling structure, this work used the software of Surpac to establish a three-dimensional digital model for the mineralization domain in the Camel 1 gold deposit, which permitted to study spatial distribution of gold mineralization in the mine. The results show that gold mineralization is overall distributed along the Mallina ductile shear belt, exhibiting a strict controlling. Such gold mineralization is also closely related with the NW-trending faults that formed later. So these NW-striking structures should receive more attention in the future prospecting, where likely better breakthrough can be achieved. Based on these new insights, three targets for ore-search have been determined, which demonstrates that the three-dimensional digital model can be applied to prospecting at a low cost, and should be accepted as a new approach in this mine. |
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