陕西蒿坪铌矿地质特征及控矿地质条件分析
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摘要
通过对陕西蒿坪铌矿地质特征、矿化富集规律、岩石学特征进行研究,分析总结了矿区铌控矿地质条件及找矿标志,确立奥陶系—志留系斑鸠关组中溢流相黑云母粗面岩为铌矿赋矿岩石。初步认为区内碱中性火山岩中铌成矿为早期岩浆结晶分异与晚期火山气液碱质交代共同作用的结果,矿床成因类型属海相碱中性火山熔岩型。
Based on the study on the geological characteristics,mineralization enrichment regularity and petrological characteristics of the Haoping niobium deposit in Shaanxi,the ore-forming conditions and prospecting indicators of the mining area were analyzed and summarized.The analysis results showed that the host rock of niobium ore was the overflowed biotite trachyte in the Ordovician-Silurian Banjiuguan Formation.It is preliminarily believed that the mineralization of niobium in the alkali-neutral volcanic rocks in the area is the common result of the early magmatic differentiation and the late volcanic gas-liquid alkali metasomatism.The genetic type of the deposit belongs to marine alkali-neutral volcanic lava type.
Based on the study on the geological characteristics,mineralization enrichment regularity and petrological characteristics of the Haoping niobium deposit in Shaanxi,the ore-forming conditions and prospecting indicators of the mining area were analyzed and summarized.The analysis results showed that the host rock of niobium ore was the overflowed biotite trachyte in the Ordovician-Silurian Banjiuguan Formation.It is preliminarily believed that the mineralization of niobium in the alkali-neutral volcanic rocks in the area is the common result of the early magmatic differentiation and the late volcanic gas-liquid alkali metasomatism.The genetic type of the deposit belongs to marine alkali-neutral volcanic lava type.
引文
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[2]王继辉,刘能,朱伟,等.陕西省安康市东南部铌(钽)多金属矿预查地质报告[R].陕西省地质调查中心,2014.
[3]王刚,王宗起,张英利,等.北大巴山紫阳地区粗面岩黑云母化学特征及成因意义[J].矿物学报,2014,34(3):343-350.
[4]陈浦浦.陕西平利朱家院火山岩岩石学、地球化学及成因探讨[D].北京:中国地质大学(北京),2015.
[5]张景平,王海岗.略阳县安林沟地区正长岩型铌钽矿特征及远景分析[J].西安科技大学学报,2013,33(6):698-704.
[6]幸世军.赣南铌钽、稀土矿床地质特征及找矿方向[J].矿产与地质,2003,17(增刊1):447-450.
[7]何季麟,王向东,刘卫国,等.钽铌资源及中国钽铌工业的发展[J].稀有金属快报,2005,12(6):1-5.
[8]刘万亮,刘成新,杨成,等.南秦岭竹溪天宝一带铌矿地质特征及找矿前景分析[J].资源环境与工程,2015,29(6):779-784.
[9]王帅君,陈志文,蒋臣,等.湖北竹溪地区铌矿地质特征及找矿前景分析[J].资源环境与工程,2016,30(6):813-816.
[10]王盘喜,包民伟.我国钽铌等稀有金属矿概况及找矿启示[J].金属矿山,2015(6):92-98.
[11]王汾连,赵太平,陈伟.铌钽矿研究进展和攀西地区铌钽矿成因初探[J].矿床地质,2012,31(2):293-308.
[12]段先哲,时皓,谭凯旋,等.内蒙古石灰窑花岗岩型铌钽铷矿床地质特征及成因[J].地质与资源2016,25(1):32-40.