河南南召响水河锑矿床特征及找矿标志  

Characteristics and prospecting clues of Xiangshuihe Sb deposit in Nanzhao of Henan

作　　者：赵春勇 

机构地区：[1]河南省地质矿产勘查开发局第一地质矿产调查院,河南洛阳471023

出　　处：《矿产与地质》2016年第2期164-169,共6页Mineral Resources and Geology

摘　　要：河南南召响水河锑矿床位于秦岭褶皱系北秦岭分区南召―方城小区;中元古界宽坪群四岔口组下段主要岩性为绢云石英片岩,工业锑矿体直接赋存于绢云石英片岩中碎裂石英岩带内,响水河锑矿床成因类型为低温热液充填交代型矿床;工业锑矿体形态为大的不规则陡倾斜脉状体;围岩蚀变主要有硅化、绢云母化和绿泥石化,金属矿化为辉锑矿化、黄铁矿化;矿石自然类型为石英辉锑矿型,按结构构造可分为细脉状矿石、浸染状矿石和块状矿石;矿石矿物成分为辉锑矿,氧化后形成锑华;分析矿床成因机理为花岗斑岩岩浆期后低温含矿热液沿构造裂隙贯入于碎裂石英岩带内,在节理或裂隙发育处富集成矿;且总结了矿床找矿标志。Xiangshuihe Sb deposit in Nanzhao of Henan is located in Nanzhao-Fangcheng district of Northern Qinling subarea of Qinling fold system.The lower member of Sichakou Formation of Kuanping Group of Mesoproterozoic Erathem occurs predominantly as sericite quartz schist,and the commercial orebody of Sb occurs directly inside the cataclastic quartz belt in the sericite quartz schist.Xiangshuihe Sb deposit is a low temperature hydrothermal filling-metasomatism type deposit,and the commercial orebody of Sb occurs as irregular steeply-dipping vein in form.The wall rock alteration primarily includes silicification,sericitization and chloritization,and the metal mineralization includes stibnitization and pyritization.The natural type of ores is quartz stibnite,and the ores can be divided into three kinds in terms of rock structure:fine veined ores,disseminated ores and massive ores.The mineral component of ores is stibnite which transforms into valentinite through oxidization.According to the analysis on genetic mechanism of deposit conducted in this paper,it is concluded that the deposit is formed by low temperature ore-bearing hydrothermal solution which intrudes into cataclastic quartz belt after magmatic stage of granite porphyry and then develops and enriches at joints and fissures.At last,the author summarized the clues for prospecting of the deposit.

关 键 词：锑矿床 秦岭褶皱系 宽坪群四岔口组 碎裂石英岩带 找矿标志 

分 类 号：P618.66[天文地球—矿床学]