陕西省略阳县干河坝金矿地质特征及矿床成因探讨

现代矿业 ›› 2020, Vol. 36 ›› Issue (09): 22-26.

陕西省略阳县干河坝金矿地质特征及矿床成因探讨

张天运

汉中西北有色七一一总队有限公司

出版日期:2020-09-25 发布日期:2021-09-23

Geological Characteristics and Genesis of Ganheba Gold Deposit in Lueyang County,Shaanxi Province

ZHANG Tianyun

No.711 Geological Team,Northwest Bureau of Geological Exploration for Nonferrous Metals

Online:2020-09-25 Published:2021-09-23

摘要/Abstract

摘要： 干河坝金矿床是南秦岭南段勉略康构造混杂岩带内属受岩相和构造双重控制的构造蚀变岩型金矿床。该矿床的矿体集中产于古生界泥盆系金家河岩组金家河千枚岩与乔子沟火山岩的岩性—构造接触带附近，多呈似层状、透镜状。为进一步探讨该矿床成因，通过对矿床成矿地质特征、地球化学背景及硫同位素的系统研究，认为：①该矿床的赋矿层位就是其初始矿源层；②经区域变质变形和多期构造活动，初始矿源层中的成矿物质活化、迁移，在近EW向张性裂隙中充填、沉淀而富集成矿。

关键词: 金矿床矿床地质特征矿床成因

Abstract: Ganheba gold deposit is a tectonic altered rock type gold deposit controlled by both lithofacies and structure in the Mianluekang tectonic melange belt of the southern section of the southern Qinling mountains.The ore bodies are concentrated in the vicinity of the lithologicalstructural contact zone between the Ginjihe phyllite and the Qiaozigou volcanic rocks of the devonian jinjihe formation in the Paleozoic.The oreforming geological characteristics,geochemical background and sulfur isotopes of the ore deposit are summarized.After regional metamorphism,deformation and multistage tectonic activities,the oreforming materials in the source layer are activated and migrated,and the oreforming materials are filled and deposited in the EWtrending tensile fractures to enrich the oreforming process.

Key words: gold deposit, geological characteristics, genesis

张天运. 陕西省略阳县干河坝金矿地质特征及矿床成因探讨[J]. 现代矿业, 2020, 36(09): 22-26.

ZHANG Tianyun. Geological Characteristics and Genesis of Ganheba Gold Deposit in Lueyang County,Shaanxi Province[J]. Modern Mining, 2020, 36(09): 22-26.

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