福建明溪下龙坑方解石矿床成因及找矿方向探讨  

Discussion on Genesis and Prospecting Direction of Xialongkeng Calcite Deposit in Mingxi County,Fujian Province

作　　者：范云虎 许庆宏 Fan Yunhu;Xu Qinghong(Fujian Geological Exploration Institute of China Chemical Geology and Mine Bureau,Fuzhou,350013)

机构地区：[1]中化地质矿山总局福建地质勘查院,福州350013

出　　处：《福建地质》2025年第1期28-36,共9页Geology of Fujian

摘　　要：明溪下龙坑方解石矿位于北武夷隆起区之南平—宁化岩浆带中南部,明溪—上杭推覆构造带北端,明溪—罗源东西向断裂带西段北侧、永安—晋江北西向断裂带北段北侧。矿体呈层状、透镜状贮存于早二叠世船山组中,产状与地层产状基本一致。方解石矿石为白度达到要求的质纯大理岩矿床,规模为大型,矿床成因类型属接触热变质矿床。通过对区内成矿地质背景和矿体地质特征的研究,分析探讨了矿区方解石矿的控矿因素、矿床成因及成矿模式,可为区域下一步找矿工作提供新的方向。Mingxi Xialongkeng calcite mine is located in the central south of Nanping-Ninghua magmatic belt in the northern Wuyi uplift zone,the north end of Mingxi-Shanghang nappe tectonic belt,the north of the west part of Mingxi-Luoyuan east-west fault belt,and the north of Yongan-Jinjiang NW fault zone.The ore body is stratified and lens-like in the Chuanshan Formation of the early Permian,and its occurrence is basically the same as the stratigraphic occurrence.Calcite ore is pure marble with whiteness meeting the requirement.The deposit size is large,and the genetic type of the deposit belongs to contact thermal metamorphism.Based on the study of the metallogenic geological background and the geological characteristics of the orebody in the area,the ore-controlling factors,deposit genesis and metallogenic model of the calcite ore deposit are analyzed and discussed,which can provide a new direction for the next ore prospecting work in the area.

关 键 词：方解石矿 矿床成因 找矿方向 明溪下龙坑 

分 类 号：P619.2[天文地球—矿床学]