甘肃东石板沟铁矿控矿因素分析  

Ore-Controlling Factors of Dongshibangou Fe Deposit of Gansu

作　　者：陈静 CHEN Jing(Zhangye Geo-mine Survey Institute of Non-ferrous Metal Geological Exploration of Gansu Province,Zhangye 734012,China)

机构地区：[1]甘肃省有色金属地质勘查局张掖矿产勘查院,甘肃张掖734012

出　　处：《甘肃冶金》2020年第2期87-92,共6页Gansu Metallurgy

摘　　要：东石板沟铁矿处于柳沟峡-九个青羊元古宙、加里东期铁、铜、金、铅锌、铬成矿带,区内众多铁矿均属于沉积变质型铁矿床,含矿地层为长城系桦树沟组(Chh)与熬油沟组(Cha),东石板沟铁矿产于熬油沟组铁质板岩中,变质硅铁建造与铁矿形成关系密切,铁矿石磁化率高,变化范围大,与磁铁矿含量的多少呈正比,磁异常是直接找矿标志。Dongshibangou Iron Mine is located in Liugouxia-Nine Qingyang Proterozoic, Caledonian iron, copper, gold, lead, zinc and chromium metallogenic belts. Many iron ores in the area belong to sedimentary metamorphic iron deposits. The ore-bearing strata are Huashugou Formation(Chh) and Aoyougou Formation(Chh) of Great Wall System. Dongshibangou Iron ore is produced in iron slate of Aoyougou Formation. The formation of metamorphic ferrosilicon is closely related to the formation of iron ore. The magnetic susceptibility of iron ore is high and its variation range is wide. It is proportional to the content of magnetite. The magnetic anomaly is a direct indicator for prospecting.

关 键 词：长城系熬油沟组 铁质板岩 含铁建造 磁异常 东石板沟 

分 类 号：P618.31[天文地球—矿床学]