吉林和龙太古代铁矿床地质特征、矿化类型及形成环境

Geological features, mineralization type and forming environment of Helong Archaean iron deposit in Jilin Province

和龙太古代铁成矿带是延边重要的铁成矿带,以官地铁矿为主体,近年来铁矿勘查工作取得重大进展,相继勘查新增资源储量或新发现了鸡南、东南村、泉水洞、土山子、大开河等多个铁矿床,使该地区成为延边地区重要的小型—中型铁矿开发基地。这些铁矿床均赋存于太古界鞍山群深变质的基性火山岩-沉积岩建造中。矿体有明显的层位,与围岩呈整合接触,矿床成因类型属铁硅质建造沉积变质铁矿床。

Helong Archaean iron metallogenic belt is an important iron ore belt in Yanbian, with the Guandi iron ore as the main body. In recent years, the iron ore exploration has made great progress, successive prospecting added resource reserves or new discoveries, such as Jinan, Dongnan Village, Quanshuidong, Tushanzi, Dakaihe iron deposits, The area had became important small-medium sized iron ore development base in Yanbian. These iron deposits are hosted in Archean Anshan Group hypometamorphic basic volcano rocks-sedimentary rock formation. Ore bodies had marked horizon, conformable contact with the surrounding rock, the genetic type of the deposit belongs to ferro siliceous formation sedimentary metamorphic iron deposit.