康清清,张熊猫,孟华.小秦岭西段稀土矿特征及找矿远景浅析[J].西北地质,2020,53(1):107-121 KANG Qingqing,ZHANG Xiongmao,MENG Hua.Analysis on the Characteristics and Prospecting of Rare Earth Ore in the Western Section of Xiaoqinling[J].Northwestern Geology,2020,53(1):107-121
小秦岭西段稀土矿特征及找矿远景浅析
Analysis on the Characteristics and Prospecting of Rare Earth Ore in the Western Section of Xiaoqinling
投稿时间:2019-06-03  修订日期:2019-11-18
DOI:10.19751/j.cnki.61-1149/p.2020.01.010
中文关键词:  小秦岭西段;稀土矿;碳酸岩;伟晶岩;找矿远景
英文关键词:West section of Xiaoqinling;rare-earth ore;carbonatite;pegmatite;prospecting perspective
基金项目:科技部国家重点研发计划"深地资源勘查开采"专项典型覆盖区航空地球物理技术示范与处理解释软件平台开发子课题"北秦岭华阳川地区隐伏铀矿空-地-井协同勘查技术示范研究"(2017YFC0602205),中国地质调查局"西安地质调查中心秦岭成矿带文康-凤太地区地质矿产调查陕西省华阳川地区铀多金属矿调查评价华阳川矿区标段钻探工程"(0617-1611FZ2063)
作者单位
康清清 东华理工大学, 江西 南昌 330013
中陕核工业集团二二四大队有限公司, 陕西 西安 710024 
张熊猫 中陕核工业集团二二四大队有限公司, 陕西 西安 710024 
孟华 中陕核工业集团二二四大队有限公司, 陕西 西安 710024 
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中文摘要:
      小秦岭西段是重要的稀土元素成矿地段。受华阳川断裂、金堆城-青岗坪断裂和太古代变质基底等因素的控制产出了区内碳酸岩型和伟晶岩型2类稀土矿化。碳酸岩型稀土矿含矿主岩为各类碳酸岩脉,以小河断裂为界,南北含矿碳酸岩在矿物组合上具有差别明显,含稀土矿物主要为磷钇矿、独居石和氟碳铈镧矿,稀土元素以轻稀土为主,但重稀土相对偏高,并具有以华阳川为中心向外围逐渐富集重稀土的特点。伟晶岩型稀土矿含矿主岩为含褐帘石伟晶岩,含稀土矿物为褐帘石,稀土元素以轻稀土为主。2类稀土矿化在形成时间上存在较大差异,碳酸岩型稀土矿化形成于印支期,伟晶岩型稀土矿化形成于古元古代晚期。区内已发现了众多的稀土矿床(点),成矿远景较好,特别是碳酸岩型稀土矿床(点)及碳酸岩脉带展布地段具有较大的找矿潜力。
英文摘要:
      The western section of Xiaoqinling is an important metallogenic area of REE. Controlled by Huayangchuan fault, Jinduicheng-Qingpinggang fault and Archean metamorphic basement, two types of rare earth mineralization such as carbonatite type and pegmatite type, are produced in this area. The main ore-bearing rock of carbonatite type is all kinds of carbonate dike, which is bounded by Xiaohe fault. There are obvious differences in the mineral assemblages between the north and the south ore-bearing carbonates. The rare earth minerals are mainly yttrium phosphate, monazite and bastnaesite. The rare earth elements are mainly light rare earth, the heavy rare earth relatively high, and gradually enriching around Huayangchuan. The main ore-bearing rock of rare earth ore in the pegmatite type is epidote-bearing pegmatite. The mineral-bearing rare earth is epidote.The rare earth elements are mainly light rare earth. The formation time of the two types of rare earth mineralization is quite different. Carbonatite type was formed in the Indosinian period, and pegmatite type was formed in the late Paleoproterozoic period. Many rare earth deposits (points) have been found in the area, with a good metallogenic prospect.the carbonate type rare earth deposits (points) and the carbonate vein belt especially has great potentiality.
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