安徽工程大学学报2025，Vol.40Issue(4)：50-59,10.
酸性蚀变岩帽特征及明矾石矿物地球化学对找矿勘探的指示
Characteristics of Lithocaps and Implications for Prospecting
摘要
Abstract
The lithocap serves as the most direct surface manifestation of the porphyry-epithermal mineralization system.It holds significant potential for deposit exploration,with its root potentially indicating high-sulfidation deposits,deeper sections associated with porphyry deposits,and the outermost near-surface alteration zones suitable for identifying intermedium to low-sulfidation deposits.Therefore,a comprehensive and systematic understanding of the characteristics and properties of lithocaps is essential for exploring economically viable copper-gold deposits in extensively altered blind mining areas.This paper provides an in-depth analysis of the geomorphic features,geological alteration characteristics,mineral composition,and fluid properties of lithocaps.It outlines methods for studying and exploring these lithocaps,focusing on the mineralogical and geochemical properties and genesis mechanisms of the representative mineral alunite.The paper also discusses how short-wave infrared spectroscopy and geochemical signatures can be utilized to locate hydrothermal or mineralized centers,thereby providing a scientific basis and strategic direction for deposit exploration.Finally,this paper uses the Lepanto lithocap in the Mankayan area,Philippines,and the Fanshan lithocap in the Luzong basin,Anhui Province,China,as case studies to illustrate the application of research and exploration techniques for porphyry deposits.These examples provide practical references for utilizing lithocaps in deposit exploration efforts.关键词
酸性蚀变岩帽/斑岩型矿床/明矾石/地球化学/找矿勘探Key words
lithocap/porphyry deposit/alunite/geochemistry/deposit exploration分类
地质学引用本文复制引用
李旋旋,廖斌,李福华,王欣,唐名鹰,林欣,邹占鹰,李双飞..酸性蚀变岩帽特征及明矾石矿物地球化学对找矿勘探的指示[J].安徽工程大学学报,2025,40(4):50-59,10.基金项目
国家自然科学基金青年项目(42102082) （42102082）
安徽省自然科学基金面上项目(2308085MA28) （2308085MA28）
安徽工程大学引进人才科研启动基金项目(2020YQQ073) （2020YQQ073）
