黑龙江苏家铁多金属矿床地质、地球化学特征及成因  

Geological and geochemical characteristics and genesis of Sujia iron polymetallic deposit in Heilongjiang Province

作　　者：李海洋[1] 杨言辰[1] 叶松青[1] 闫文强 蔡继宏 张国宾[1] 王林[1] 

机构地区：[1]吉林大学地球科学学院,长春130061 [2]黑龙江有色金属地质勘查七三队,哈尔滨150300

出　　处：《世界地质》2012年第4期656-664,共9页World Geology

基　　金：中国地质调查局地质大调查项目(1212011120342)

摘　　要：苏家铁多金属矿床位于黑龙江省张广才岭成矿带内,受一撮毛碱长花岗岩体及相关花岗斑岩岩体控制。矿体产出于花岗斑岩和大理岩的接触带及层间破裂带内,主要为矽卡岩型铁锌矿体。组成矿体的主要矿石矿物为磁铁矿和闪锌矿;围岩蚀变类型主要有矽卡岩化、矽化、角岩化、碳酸盐化和绿泥石化,其中矽卡岩化与矿化关系密切,是区内的主要找矿标志。矿床地球化学特征研究表明成矿物质来自壳源岩浆演化和上部热液交代碳酸岩地层,并在矽卡岩带内形成矿化体和矿体。结合成矿地质背景,确定苏家铁多金属矿床为矽卡岩型矿床。The Sujia iron polymetallic deposit is located in the Zhangguangcai Range metallogenic belt of Heilongjiang Province,controlled by the Yizuomao alkali feldspar granite and granite porphyry.The orebodies were hosted in the contact zone of granite-porphyry and marble,and in the interlayer fracture zone,being mainly as skarn Fe-Zn orebodies in type.The metallic minerals of orebodies are composed mainly of magnetite and sphalerite.The alteration of wall rocks mainly were skarnized,petrified,hornfels,carbonation and chloritization in type,in which the skarnized was closely related to mineralization,being as the main prospecting criteria.The characteristics of geochemistry indicate that the metallogenic material mainly came from the evolution of crust-source magma and upper carbonate rocks.The hydrothermal mineralized bodies and orebodies occurred in the skarn rock which formed by the hydrothermal metasomatism with carbonate layer.Combined with the regional geological background,we determined that the Sujia iron polymetallic deposit was skarn deposit in type.

关 键 词：地质特征 地球化学特征 矿床成因 苏家铁多金属矿床 黑龙江省 

分 类 号：P618.3[天文地球—矿床学] P595[天文地球—地质学]