摘要
通过四川雷波黑波罗矿区玄武岩矿床详查地质勘查工作,查明了该矿床类型为陆相火山喷发型玄武岩矿床,矿体赋存于上二叠统峨眉山玄武岩(P3em)下旋回第一次级旋回(P3em^2-1)。控制矿体长度597m,最大延伸808m,埋深0~170.20m;控制矿体厚度70.25~167.33m,平均厚度111.46m。矿石自然类型为灰绿色少斑状辉石玄武岩,矿石主要化学成分平均含量为:SiO250.67%、Al2O313.45%、CaO 8.26%、MgO 4.00%、Fe2O313.93%、K2O 1.92%、Na2O 2.16%,饱和抗压强度81.8~99.2MPa,压碎值11.4%~12.7%,吸水率0.3%,坚固性1.1%~1.3%,磨光值(PSV)45~46。估算开拓境界内矿产资源量(332)+(333)1510.2万m^3,剥采比为0.01∶1m^3/m^3,达中型矿山规模,开采技术条件良好。通过与玄武岩工业指标要求对比发现,黑波罗矿区玄武岩满足国内建筑用玄武岩、玻璃纤维用玄武岩的要求指标,开发利用价值较高,应用前景广阔。
Through a general exploration work of basalt deposit in Leibo county,Sichuan province,it is considered that this deposit belongs to continental volcanic eruption basalt deposit,the ore bodies occur in the first secondary-cycle(P3em^2-1)of upper permian subcycle basalt(P3em),the length of engineering controlled ore body is 597m,the maximum extension is 808m,the burial depth is 0~170.20m,the thickness of engineering controlled ore body is from 70.25m to 167.33m,with an average of 111.46m.The natural type of ore is mainly gray-green sparsely porphyritic pyroxene basalt with very few almond-shaped and vesicular pyroxene basalt.The average content of SiO2,Al2O3,CaO,MgO,Fe2O3,K2O,Na2O is 50.67%,13.45%,8.26%,4.00%,13.93%,1.92%,2.16%.The saturated compressive strength is 81.8MPa^99.2MPa,the crushing value is 11.4%~12.7%,the water absorption rate is 0.3%,the firmness is 1.1%~1.3%and the polish stone value is 45~46.It is estimated that the resource extent of 332+333 category amounts to 15.102 million m^3 and the stripping ratio is 0.01:1m^3/m^3,which is up to middle size and has a good mining technical conditions.It is found that this basalt ore body meets the domestic basalt requirements for construction and fiber by comparing with basalt industrial index requirements,which has high value and broad prospect.
作者
奚旺
XI Wang(Sichuan Branch of China National Geological Exploration Center of Building Materials Industry,Chengdu 610052,China;Chengdu University of Technology,Chengdu 610052,China)
出处
《中国非金属矿工业导刊》
2020年第3期32-36,7,共6页
China Non-Metallic Minerals industry
关键词
玄武岩
矿床特征
开发利用
basalt
geological characteristics
development and application
