美多热液型锑银矿床成矿模式探讨

Analysis of the Mineralization and Metallogenic Model of Meiduo Hydrothermal Antimony-silver Deposit

本文通过介绍美多热液型锑银矿床的基本地质特征和成矿物质来源,对矿床的成矿模式做简单分析。研究结果表明,在渐新世-晚中新世期间,美多矿区所在地大气降水下渗萃取火成碎屑岩和三叠统土门格拉组碎屑岩与碳酸盐岩中的成矿物质,在地热异常的背景下形成富矿热液。在温度、压力及其它物理化学条件突变的情况下,矿物质在NNE-NE向张性裂隙沉积、富集形成脉状锑银矿体。

This article shows a simple analysis of the mode of Meiduo hydrothermal type antimony-silver deposit, through the introduction of basic geological features and sources of ore-forming materials of Meiduo hydrothermal antimony-silver deposit. The results show that in the Oligocene-late Miocene period the Precipitation of the location of Meiduo mining area infiltrating and extracting the metallogenic material which in the Pyroclastic rock, clastic rock of Tumengela group in Triassic and carbonate rock, forming ore hydrothermal In the context of geothermal anomaly. Minerals deposited and enriched in the NNE-NE extensional fractures,forming antimony- silver vein body,in the mutation of the temperature, pressure and other physical and chemical conditions.