| 阴元军,王书来,冯翼鹏,杨新雨,岳鹏军,王军,王洋,鲁扬,王幻,张毅.斐济瓦图科拉金矿外围浅成低温热液金矿矿床地质特征、构造控矿规律及找矿预测[J].矿产勘查,2025,16(5):1121-1134 |
| 斐济瓦图科拉金矿外围浅成低温热液金矿矿床地质特征、构造控矿规律及找矿预测 |
| Geological characteristics, regularities of ore-controlling structures and prospecting prediction of peripheral of Vatukoula epithermal gold deposit in Fiji |
| 投稿时间：2025-03-01 |
| DOI：10.20008/j.kckc.202505016 |
| 中文关键词: 瓦图科拉金矿 矿床地质特征 围岩蚀变 构造控矿规律 找矿标志 找矿预测中图分类号:P542 P613文献标志码:A文章编号:1674-7801(2025)05-1121-14 |
| 英文关键词: Vatukuola gold deposit geological characteristics wall rock alteration ore-controlling regularities of structure prospecting indicator prospecting prediction |
| 基金项目:本文受国际地球科学计划理事会项目(IGCP741)和矿业权人金盆矿业(斐济)私人有限公司自筹资金项目“斐济瓦图科拉金矿矿田构造研究及找矿预测”联合资助。 |
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| 中文摘要: |
| 斐济群岛位于环太平洋成矿带的西南边缘，以拥有多个世界级的斑岩铜金和浅成低温热液金矿床而闻名。斐济瓦图科拉金矿位于斐济维提岛北部边缘的塔武阿火山盆地中，为典型的构造控矿类型的浅成低温热液型金矿床。研究区内矿体主要受构造控制，分为层间滑脱断层控制的近地表缓倾硅化角砾岩型金矿体及放射状断层(及其次级断裂)、环状断裂(次级断裂)所控制的深部陡倾蚀变岩型金矿体。围岩蚀变强烈，硅化、黄铁绢云岩化及青磐岩化与矿化密切相关。本研究在研究区内厘定了 5期构造活动，并结合典型构造与矿体之间的关系，划分了成矿前、成矿期及成矿后构造。综合矿床地质特征、激电中梯、构造形迹调查成果，总结了研究区找矿标志，圈定了 5处靶区并对其中 2处进行了验证，取得了良好的找矿成果。 |
| 英文摘要: |
| The Fiji Islands are located on the southwestern margin of the Pacific Rim metallogenic belt and arefamous for its many world-class porphyry copper-gold and epithermal gold deposits. The Vatukuola gold deposit inFiji is located in the Tavua volcanic basin on the northern edge of the Viti Island in Fiji. It is a typical structuralore-controlling type of epithermal gold deposit. The main ore bodies in the study area are controlled by structureand are divided into near-surface gently dipping silicified breccia type gold ore bodies controlled by interlayer de.tachment faults and deep steeply dipping altered rock type gold ore bodies controlled by radial faults (and their sec.ondary faults) and ring faults (secondary faults). The wall rock alteration in the mining area is strong, sericitic-pyritization, silicification and propylitization are closely related to the gold mineralization. Five stages of tectonic ac.tivities in study area were determined in this study. The relationship between typical structures and ore bodies wasdetermined, and the structures before, during and after mineralization were divided. Integrating geological character.istics of the ore deposit, intermediate-scale geoelectric surveys, and structural trace investigation results, the min.eral exploration indicators of the study area have been summarized, five target areas were delineated, and two ofthem were verified, achieving good mineral exploration results. |
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