矿床地质2025，Vol.44Issue(2)：349-364,16.DOI:10.16111/j.0258-7106.2025.02.006
贵州省水银洞金矿床茅口组方解石地球化学特征及指示意义
Geochemical characteristics and indicated significance of Maokou Formation calcite in Shuiyindong gold deposit,Guizhou Province
摘要
Abstract
The Shuiyindong gold deposit is located in the north of the"Golden Triangle"of Yunnan,Guizhou and Guangxi,and is one of the important representative deposit of layered Carlin-type gold deposits in this area.This article presents an in-situ micro-area LA-ICP-MS analysis of calcite within the Maokou Formation limestone of the Shuiyindong gold deposit.The data reveals a generally low concentration of the total rare earth elements(∑ REE=(3.41～18.01)× 10-6),with the normalized pattern curve exhibiting a right-leaning trend characterized by an enrichment of light rare earth elements(LREE)and a depletion of heavy rare earth elements(LREE/HREE=0.46 to 10.32,with an average of 1.93;LaN/YbN=3.31 to 1666.65,with an average of 147.37).Additionally,there is a weak negative anomaly of cerium(δCe=0.34 to 1.03,with an average of 0.60)and a mild positive anomaly of europium(δEu=0.62 to 4.41,with an average of 1.13).Through comparative analysis with previously published data on calcite's rare earth elements,it is inferred that the hydrothermal fluid in the Shuiyindong deposit is char-acterized by a pulsating intrusion model,which has been illustrated in a schematic representation.Ultimately,it is posited that the calcite within the Maokou Formation limestone may signify the onset of the next hydrothermal cycle,suggesting substantial mineralization potential at greater depths.关键词
方解石/稀土元素/茅口组灰岩/水银洞矿床/贵州省Key words
calcite/rare earth element/Maokou Formation limestone/Shuiyindong deposit/Guizhou Province分类
天文与地球科学引用本文复制引用
李德东,王玉往,张会琼,解洪晶,陈昱,龙灵利,耿健,王琦睿..贵州省水银洞金矿床茅口组方解石地球化学特征及指示意义[J].矿床地质,2025,44(2):349-364,16.基金项目
本文得到紫金集团矿山综合找矿预测专项-重要矿床类型成矿规律与找矿预测研究项目(编号:KCDZKCY-2022-048)资助 （编号:KCDZKCY-2022-048）
