塞尔维亚东部Z.Brdo金矿床地质特征及矿床成因分析

Geologic feature and ore genesis of Z.Brdo gold deposit in Eastern Serbia

Z.Brdo金矿床位于欧洲东南部Apuseni-Banat-Timok-Srednogorie岩浆成矿带的Timok杂岩带上,成矿条件优越。矿体赋存于早白垩世中粗粒安山岩(原称"黑云角闪斜长安山岩")与中细粒安山岩(原称"角闪斜长安山岩")内,其形态、规模、产状严格受北西向构造蚀变带控制,黄铁矿化、硅化、高岭石化蚀变带是该矿床的主要含矿蚀变带,矿床位于正磁异常与负磁异常交界处,磁异常界线的走向与矿体的走向基本一致。本文结合成矿地质背景,研究分析了Z.Brdo金矿地质特征和矿化富集规律,并对矿床成因进行了探讨,认为矿床成因类型为低硫浅成低温热液型金矿床。通过该矿床地质特征和成因的研究,为寻找带内类似的金矿床提供借鉴。

The Z.Brdo gold deposit is located in the Timok Magmatic Complex of the Apuseni-Banat-TimokSrednogorie magmatic metallogenic belt in southeastern Europe,with superior metallogenic conditions.The ore body occurs in the Upper Cretaceous medium-coarse-grained biotite hornblende changandite and medium-finegrained hornblende changandite,and its shape,scale and occurrence are strictly controlled by the NW-trending structural alteration zone.The pyrite silicified kaolinite alteration zone is the main ore-bearing alteration zone of the deposit.The deposit is located at the junction of the positive and negative magnetic anomalies,and the direction of the magnetic anomaly boundary is basically the same as that of the ore body.In this paper,combined with the geological background of mineralization,the geological characteristics and mineralization enrichment rules of the Z.Brdo gold deposit are studied and analyzed,and the genesis of the deposit are discussed.The research on the geological characteristics and genesis of this gold deposit has important reference significance for searching for similar gold deposits in the Timok Magmatic Complex belt.