论文部分内容阅读
五凤—五星山金矿床属中生代陆相火山岩低流型浅成热液型金矿床。侏罗系上统金沟岭组火山岩为其主要矿源层,矿体受火山机构的断裂、裂隙和次火山岩脉内外接触带控制。碱长花岗岩侵入金沟岭组底部,为金矿形成提供了热源。成矿作用主要在低压、中性介质和弱氧化、超浅成条件下进行。金矿一般富集于矿体上部;矿体转弯、膨大处及分支复合处;强冰长石绢云母硅化蚀变岩中;含细粒黄铁矿的方解石石英脉;辉银矿集中地段。
The Wufeng-Wusing Mountain gold deposit is a Mesozoic continental volcanic low-flow epithermal-type gold deposit. The Jurassic Upper Jingougou Formation volcanic rocks are the main source rocks. The ore bodies are controlled by volcanic bodies faults, fissures and the contact zones inside and outside the subvolcanic veins. Alkaline granite intrudes into the bottom of Jingouling Formation and provides a heat source for gold formation. Mineralization is mainly in low pressure, neutral medium and weak oxidation, ultra-shallow into the conditions. Gold ore generally enriched in the upper part of the ore body; ore turn, swollen and branch complex; strong ice feldspar sericite silicified alteration rock; calcite quartz vein with fine pyrite; gypsum concentrated area.