辽宁东部硼矿成矿化学反应特征  

Chemical reaction characteristics of borax ore-forming in eastern Liaoning

作　　者：董宽志 王慧雅[2] 武振凯[3] 刘莹莹 

机构地区：[1]辽宁省地矿局第五地质大队,辽宁大石桥115100 [2]吉林省地质调查院,吉林长春130061 [3]吉林省通化县国土资源局,吉林通化县134100 [4]吉林省地质科学研究所,吉林长春130012

出　　处：《吉林地质》2011年第1期75-76,共2页Jilin Geology

摘　　要：辽宁东部早元古宙辽河群变质岩系底部硼矿床,是我国已知的大型热液矿床。通过对矿床地质、矿物岩石特征研究表明,辽东硼镁矿是层控热液交代矿床。其基底混合花岗岩强底劈上涌作用,促使其近接触带的矿物岩石产生热液交代作用,地层中的电气石分解重组,硼酸根交代蛇纹石、镁橄榄石、大理岩,形成硼镁矿,这一成矿化学反应特征的发现,为辽宁东部地区硼矿床找寻提供了具体的标志——中粗粒钠长石岩层、石英脉、裂缝充填磁铁矿。As early Proterozoic in eastern Liaoning Liaohe Group metamorphic rocks in the bottom of the boron bed,is China＇s large-scale hydrothermal deposit known.Through the geology of mineral deposits-mineral petrology studies have shown that boron-magnesium Liaodong are stratabound hydrothermal ore deposit account.Mixed granite basement at the end of its strong upwelling of splitting,prompting its near the contact zone of the mineralogy,petrology and hydrothermal metasomatism produced,formation of tourmaline decomposition of reorganization,the root account of serpentine boric acid,magnesium olivine,marble,forming boron-magnesium ore,the ore-forming chemical reaction characteristics of the discovery of the eastern region of Liaoning borax provides a concrete bed to find a sign of the coarse-grained albite rocks,quartz veins,cracks,filling magnetite.

关 键 词：电气石 镁橄榄石 硼镁石 辽河群 热液交代 

分 类 号：P619.219[天文地球—矿床学]