四川省会理地区纤维用玄武岩质量评价  

QUALITY EVALUATION OF FIBER BASALT IN HUILI AREA,SICHUAN PROVINCE

作　　者：田玉珂 彭秀红[1,2] 周建斌[3] 朱昕洋 冯鑫 TIAN Yuke;PENG Xiuhong;ZHOU Jianbin;ZHU Xinyang;FENG Xin(College of Earth and Planetary Science,Chengdu University of Technology,Chengdu,Sichuan 610059,China;Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province,Chengdu University of Technology,Chengdu,Sichuan 610059,China;College of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu,Sichuan 610059,China)

机构地区：[1]成都理工大学地球与行星科学学院,四川成都3610059 [2]成都理工大学地学核技术四川省重点实验室,四川成都610059 [3]成都理工大学核技术与自动化工程学院,四川成都610059

出　　处：《矿物岩石》2024年第3期1-12,共12页Mineralogy and Petrology

基　　金：国家自然科学基金面上项目(批准号:11975060);四川省自然科学基金面上项目(编号:2022NSFSC0315);省级大学生创新创业项目(编号:S202210616004)。

摘　　要：玄武岩纤维被列为国家战略性资源,在各领域有广阔应用前景。但作为支撑产业发展的纤维用玄武岩原矿矿产勘查工作程度总体水平还较低,尤其是优质纤维用玄武岩的开采与评价标准仍有待完善。四川会理市龙肘山峨眉山玄武岩分布面积广,岩体厚度约3000余米,存在多层化学性质相对较稳定的致密块状玄武岩,可用于制备优质玄武岩纤维。为评价会理地区连续玄武岩纤维矿体质量,在野外调查的基础上,采用岩相学结合元素地球化学方法,探讨化学成分、特征参数工业指标及成因特征对纤维用玄武岩质量影响。研究结果表明:(1)会理地区玄武岩岩矿资源丰富,可作为优质玄武岩纤维原料的致密块状玄武岩厚度达1000余米,找矿前景巨大。(2)玄武岩样品w(SiO_(2))为47.01%~49.81%、w(TiO_(2))为2.79%~5.22%、w(CaO)为5.37%~11.22%、w(Al_(2)O_(3))为11.73%~14.87%、w(TFe_(2)O_(3))为12.79%~15.03%、w(MgO)为3.53%~10.22%、w(Na_(2)O+K_(2)O)为1.76%~5.04%,且酸度系数(Ma)为3.12~5.22,w(FeO/Fe_(2)O_(3))为0.90%~2.31%,w(SiO_(2)+Al_(2)O_(3))为61.08%~63.75%,原料具有适宜熔点和黏度,所制纤维具有良好稳定性和强度。(3)区内玄武岩属于碱性-亚碱性系列,微量、稀土元素特征与OIB型玄武岩相似,其玄武岩浆来源于大陆板内稳定的石榴石橄榄岩区,上升过程中未受到地壳同化混染,拉丝时原料具有稳定的硅酸盐结构。(4)会理地区玄武岩Li,Ni,Zn,Ce,Er5种元素含量适宜,可提高玄武岩纤维耐高温、抗腐蚀等性质。总之,会理地区玄武岩储量大,具有纤维用玄武岩矿石的良好赋存地质条件,且品质优良,可作为优质原料开采,研究成果对建立优质纤维用玄武岩地质勘查及矿石品质综合评价体系具有指导意义。Basalt fiber is recognized as a national strategic resource with extensive applications across vari-ous fields.However,the overall level of mineral exploration and its role in supporting industrial develop-ment remains relatively low.In particular,the standards for mining and evaluating high-quality basalt fi-ber need significant improvement.The basalt deposits of Longzhou Mountain and Emei Mountain in Huili City,Sichuan Province are widespread,with rock masses exceeding 3000 meters in thickness locally.These areas contain several layers of massive basalt characterized by stable chemical properties,ideal for producing high-quality basalt fiber.Based on field investigations,the quality of continuous basalt fiber de-posits in the Huili area is assessed through petrography and element geochemistry.This evaluation aims to explore the impact of chemical composition,characteristic parameters,industrial indices,and genetic traits on the quality of basalt fiber.The findings indicate that:(1)Basalt mineral resources in the Huili area are abundant,promising significant prospects for exploration.The thickness of dense,massive ba-salt-suitable as high-quality raw material for basalt fiber-exceeds 1000 meters.(2)Geochemical analysis of basalt samples yielded the following results:SiO_(2)=47.01%-49.81%,TiO_(2)=2.79%-5.22%,CaO=5.37%-11.22%,Al_(2)O_(3)=11.73%-14.87%,Fe_(2)O_(3)=12.79%-15.03%,MgO=3.53%-10.22%,Na_(2)O+K_(2)O=1.76%-5.04%,acidity coefficient(Ma)=3.12-5.22,FeO/Fe_(2)O_(3)=0.90%-2.31%,SiO_(2)+Al_(2)O_(3)=61.08%-63.75%.Additionally,the raw material exhibits suitable melting points and vis-cosity.The resulting fiber demonstrates excellent stability and strength,and the basalt retains a stable sil-icate structure during wire drawing.(3)Comprehensive analysis reveals that the basalts in the area belong to the alkali-subalkaline series,sharing trace and rare earth element characteristics similar to OIB basalts.The basaltic magma is believed to originate from stable garnet peridotite areas within the continental plate,unaff

关 键 词：四川省会理地区 峨眉山玄武岩 玄武岩纤维 岩石成因特征 质量评价 

分 类 号：P588.145[天文地球—岩石学]