化工矿产地质2024，Vol.46Issue(4)：289-300,12.
永平铜矿十字头-火烧岗岩体地球化学特征及构造背景
Geochemical characteristics and tectonic setting of the Shizitou-Huoshaogang rock mass in the Yongping copper mine
许红光 1王健 1郑文斌 1王新旭 1李悝 1钟锐 1方行 1谢云辉1
作者信息
- 1. 江西省地质局第八地质大队,江西 上饶 334000
- 折叠
摘要
Abstract
The Yongping copper mine is located in the northern margin of the north Wuyi metallogenic belt.During exploration work in recent years,a molybdenum deposit is founded to coexist in this copper deposit in the deep part of the copper mine,which is closely related to the mineralization of the rock mass.In this paper,the petrology and petrogeochemistry of the Shizitou-Huoshaogang rock mass in the Yongping copper mine are analyzed and studied.The results show that the Huoshaogang rock mass in the Yongping mining area may be a branch of the Shizitou rock mass.In the deep part,the Shizitou rock mass and the Huoshaogang rock mass are connected into a whole,extending in one-way direction and with a certain scale of irregular rock wall output.The rock type is mainly porphyritic-like biotite granite,which is closely related to Cu and Mo mineralization and belongs to the early Yanshanian.The rock mass is characterized by low-Ti,high-Si,high-Al,low-Na,high-K,shoshonite series and weakly peraluminous-peraluminous geochemical characteristics of main elements.The negative and positive Eu anomalies of rare earth elements are obvious(Eu/Eu*=0.67～1.23).There is no obvious Ce anomaly(Ce/Ce*=0.98～1.07).Nb is seriously depleted;Th,Sr,P,Zr,Hf and Ti are relatively depleted;and Rb,Ba,U and Sm are relatively enriched.The rock mass belongs to S-type granite,which may be the magma product because of the partial melting of the upper crust during the subduction of the Cathaysian plate to the Yangtze plate under the background of activated orogeny(local extension).关键词
似斑状黑云母花岗岩/岩石地球化学/岩石成因/构造背景/永平铜矿Key words
Porphyritic-like biotite granite/Petrogeochemistry/Rock genesis/Tectonic settin/Yongping copper mine分类
天文与地球科学引用本文复制引用
许红光,王健,郑文斌,王新旭,李悝,钟锐,方行,谢云辉..永平铜矿十字头-火烧岗岩体地球化学特征及构造背景[J].化工矿产地质,2024,46(4):289-300,12.
