| 白曜宇,何丽萍,英亚歌,宋超,王昊,张莹,赵爱华.河南西峡县高庄金矿床地球化学特征与成矿机制研究[J].矿产勘查,2026,17(4):615-624 |
| 河南西峡县高庄金矿床地球化学特征与成矿机制研究 |
| Geochemical characteristics and mineralization mechanism of the Gaozhuang gold deposit in Xixia County, Henan Province |
| 投稿时间：2024-03-26 |
| DOI：10.20008/j.kckc.202604004 |
| 中文关键词: 地球化学特征 成矿机制 金矿床 高庄 河南西峡 |
| 英文关键词: geochemical characteristics metallogenic mechanism gold deposits Gaozhuang Xixia County of Henan |
| 基金项目:本文受河南省豫地科技集团有限公司科研项目(JTZCKY2023020)、河南省国土资源厅地质科研项目(2014-6)和河南省地勘基金项目“河南省西峡县高庄矿区深部及外围金矿普查”(2013-5)联合资助。 |
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| 中文摘要: |
| 高庄金矿床位于秦岭造山带北秦岭构造带二郎坪地体，与造山作用密切相关，矿体赋存于早古生界二郎坪群火神庙组地层斜长角闪片岩中，受北北西向脆-韧性剪切带控制，呈薄脉状、似层状、长条状、透镜状，沿走向、倾向具膨大、缩小等现象。矿石主要有石英脉型和蚀变岩型两种，金属矿物主要以金矿物和硫化物形式赋存，围岩蚀变主要为硅化、钾化、碳酸盐化、绿帘石化、绿泥石化等。本文通过对区域地质背景、矿床地质、地球化学特征等方面的研究，查明该矿床形成于早白垩世秦岭造山碰撞后伸展阶段,成矿物质具深源性，成矿流体为中温变质水为主、混合了部分岩浆水，因温度变化、降压、流体混合导致成矿物质沉淀，在有利的储矿空间富集成矿，矿床为造山变质热液型金矿床。 |
| 英文摘要: |
| The Gaozhuang gold deposit is located in the Erliangping structural body of the North Qinling Tec.tonic Belt within the Qinling orogenic belt. It is closely related to the orogenic process. The ore body is hosted in thegabbroic amphibolite of the Shengwenshe Formation of the Erliangping Group in the Early Paleozoic, and is con.trolled by the north-northwest trending brittle-ductile shear zone. It is in the form of thin veins, lamellar, elongated,and lens-shaped, and shows phenomena of expansion and contraction along the strike and dip. The ores mainly con.sist of quartz vein type and alteration rock type. The metal minerals are mainly in the form of gold minerals and sul.fides. The alteration of the surrounding rocks mainly includes silicification, potassiumization, carbonatization, epi.dotization and chloritization. Through the research on the regional geological background, deposit geology, geo.chemical characteristics, etc., this paper has identified that this deposit formed in the extension stage after the colli.sion and extension of the Qinling orogen in the Early Cretaceous, and the ore-forming materials are of deep sourcenature. The ore-forming fluids are mainly medium-temperature metamorphic water, mixed with some magma water.Due to temperature changes, depressurization, and fluid mixing, the ore-forming materials precipitated, and the de.posit accumulated in favorable ore storage spaces under the influence of temperature changes. This deposit is an oro.genic metamorphic hydrothermal gold deposit. |
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