| 段湘益,李维成,董王仓,吕渡,王海元,杨帅,杨涛,高海峰,朱伟.陕西镇安地区钨成矿地质条件及找矿潜力[J].矿产勘查,2025,16(4):752-763 |
| 陕西镇安地区钨成矿地质条件及找矿潜力 |
| The geological conditions and prospecting potential of tungsten mineralization in Zhen'an area, Shaanxi Province |
| 投稿时间：2023-01-07 |
| DOI：10.20008/j.kckc.202504007 |
| 中文关键词: 钨矿床 地质调查工程 成矿地质条件 找矿潜力 南秦岭 镇安 |
| 英文关键词: tungsten deposit geological survey engineering metallogenic geological conditions prospecting potential South Qinling Zhen′an |
| 基金项目:本文受陕西省公益性地质调查项目(20170302、20170309、20180301、202508)、中国地质调查局项目(DD20160346、DD20190379、12120114058301)及陕西省地质灾害隐患识别中心建设(二期)(陕自然资勘发〔2021〕42号)、陕西省矿区(山)矿体三维结构模型建设(陕自然资矿保函〔2024〕91号)联合资助。 |
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| 中文摘要: |
| 秦岭造山带是中央造山带的重要组成部分，在中国大陆地壳的形成、演化中占据着突出地位，近年来在南秦岭镇安地区取得了钨找矿重大突破。为进一步挖掘找矿潜力，扩大找矿成果，本文在地质工作项目和前人成果的基础上，通过对镇安地区区域地质背景、成矿地质条件、成矿规律、典型矿床特征等方面进行综合研究。结果表明，矽卡岩型钨矿床(点)主要产于燕山期中酸性花岗岩与寒武系—奥陶系石瓮子组碳酸盐岩的外接触带，矿体受岩体、构造、地层“三位一体”控制，成矿时代为燕山早期；岩浆热液脉型钨矿床(点)产于印支—燕山期中酸性花岗岩体与寒武系—奥陶系碳酸盐岩—碎屑岩或二者接触带的节理裂隙“上脉下体”“上钨下铍”中，具、的垂向分带特征，成矿时代主要为印支晚期；风化残坡积型钨矿床赋存于第四系坡积物中，成矿时代为喜马拉雅期。东阳—核桃坪钨矿集区深部具有找寻盲矿或第 2个钨矿体富集带的潜力，东阳—核桃坪、大菜子沟和小磨岭西部等找矿远景区的工作程度较低，具有寻找钨多金属矿床(点)的潜力。 |
| 英文摘要: |
| The Qinling Orogen is a significant component of the Central Orogenic Belt in China, playing a cru-cial role in the formation and evolution of the mainland crust. In recent years, there have been significant advance-ments in tungsten exploration in the Zhen′an area of southern Qinling. This study aims to conduct a comprehensiveinvestigation of the geological background, ore-forming geological conditions, ore-forming regularities, and typicalore deposit characteristics in the Zhen′an area to further explore the mining potential and expand the mining resultsbased on the geological work project and previous research. The research findings indicate that the skarn-type tung-sten deposits are primarily found in the outer contact zone between the Yanshanian acidic granite and theCambrian-Ordovician dolomite of the Shiwengzi Formation. The ore body was controlled by the rock mass, struc-ture, and stratigraphy, and the mineralization occurred in the Early Yanshanian period. The magmatic-hydrothermalvein-type tungsten deposits are located in the joints and fissures of the Indosinian-Yanshanian acidic granite andthe Cambrian-Ordovician carbonate and clastic rocks, with a vertical zoning characteristic of upper vein and lowerbody, upper tungsten and lower beryllium, and the main mineralization period was in the Late Indosinian period.The weathered residual slope-type tungsten deposits are hosted in Quaternary slope deposits and formed in the Hi-malayan period. There is potential to search for blind ore bodies or the second tungsten deposit enrichment zone inthe deep part of the Dongyang-Hetaoping tungsten deposit cluster. Based on the low level of exploration work, theprospecting areas of Dongyang-Hetaoping, Dacaizigou, and Western Xiaomoling have the potential to exploretungsten-polymetallic deposits. |
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