青海省祁连县过龙沟铁矿床地质特征及矿床成因

Geological Characteristics and Genesis of Guolongou Iron Deposit in Qilian County,Qinghai Province

过龙沟铁矿床位于北祁连托勒山成矿带上,该区成矿条件优越。对区域成矿地质背景、矿区和矿床地质特征进行分析研究,进而探讨矿床成因。研究表明,在该矿区发现了4条铁矿(化)体,矿体赋存于古元古托勒岩群斜长角闪片麻岩中,矿石矿物主要为磁铁矿,次有赤铁矿、褐铁矿等,矿体多呈层状分布。其成矿地质背景和矿床特征表明,该矿床属于沉积变质型铁矿床。

Guolonggou iron deposit is located in the North Qilianshan Mountains, where we can see Tuoleshan ore bet, which has favorable metallogenic conditions. This paper studies geological background, deposit and ore characteristics and genesis of the deposit. It shows that four iron ore（mineralization） bodies have been found their. The iron orebodies are hosted in plagioclase amphibole gneiss in Paleo-proterozic Tuolayan group and they are fomled in a state of layer morphology. The ore minerals are mainly magnetite, hematite and limontite etc. The geological background and deposit characteristics indicates that it belongs to the sedimentacy-metamorephic iron deposit.