河北张家口晶质石墨矿地质特征及成矿规律  

Geological Characteristics and Metallogenic Regularity of Crystalline Graphite Ore in Zhangjiakou, Hebei Province

作　　者：齐新国 付茂英[1] 王志刚[1] 王立考[1] 王政[1] 门小靖 QI Xin-guo;FU Mao-ying;WANG Zhi-gang;WANG Li-kao;WANG Zheng;MEN Xiao-jing(Hebei Branch of China National Geological Exploration Center of Building Materials Industry,Baoding 071000,China)

机构地区：[1]中国建筑材料工业地质勘查中心河北总队

出　　处：《中国非金属矿工业导刊》2019年第S01期35-42,共8页China Non-Metallic Minerals industry

基　　金：中国地质调查局“中西部地区晶质石墨等特种非金属矿产调查”项目(编号:DD20160058)

摘　　要：通过对区域成矿地质背景、调查区晶质石墨矿成矿地质条件、含矿带分布、激电异常特征及矿床地质特征等研究,总结区内晶质石墨矿的成矿地质特征,并初步探讨了区内石墨矿的成矿规律及成矿模式。研究结果表明:石墨矿体赋存于中太古界崇礼岩群下白窑岩组、新太古界红旗营子岩群太平庄岩组及东井子岩组的含石墨变粒岩及含石墨大理岩中,含矿层分布受大型复式褶皱控制,并受断裂构造影响;矿体规模较大、矿石品位中等,但石墨鳞片较大,易选;矿化层具有“高极化—低阻”的地球物理特征;矿床类型为区域变质型,成矿作用经历了沉积期、变质期及混合岩化期,与华北古陆主要的晶质石墨矿床类型和成矿时代一致。Based on the study of metallogenic geological background, metallogenic geological conditions of crystalline graphite ore in the investigation area, distribution of ore-bearing belt, IP anomaly characteristics and geological characteristics of ore deposits, the metallogenic geological characteristics of crystalline graphite ore in the area are summarized, and the metallogenic rules and models of graphite ore in the area are preliminarily discussed. The results show that the graphite ore bodies occur in the graphitic metamorphic granulites and graphitic marble of the Xiabaiyao rock formation of Chongli rock group, middle Archean, Taipingzhuang rock formation and Dongjingzi rock formation of Hongqi Yingzi rock group, Neoarchean. The distribution of ore-bearing strata is controlled by large fold and affected by fault structure. The ore body size is large, the ore grade is medium, but the graphite scale is large, easy to separate;The mineralization layer has the geophysical characteristics of “high polarization-low resistance”, and the deposit type is regional metamorphism type. The mineralization process has gone through sedimentary stage, metamorphism stage and mixed petrolization stage, which is consistent with the main crystalline graphite deposits in the north China paleocontinent and the metallogenic age.

关 键 词：张家口 晶质石墨矿 成矿地质特征 成矿规律 

分 类 号：P619.252[天文地球—矿床学]