摘要
四川省雷波县黄郞沟勘查区位于康滇古陆东缘,该区峨眉山玄武岩为典型陆相喷发玄武岩,属溢流相。通过地质填图、钻探验证、样品测试及显微镜下观察,对勘查区纤维用玄武岩的资源潜力进行了初步分析,认为:①勘查区峨眉山玄武岩岩石类型主要为致密块状玄武岩、杏仁状玄武岩及斑状玄武岩,其中致密块状玄武岩是本区主要的纤维用玄武岩矿石类型;②验证钻孔揭露WS-Ⅰ号矿体厚度69.49m,无夹石,矿石主量元素特征为:w(SiO_(2))=48.89%,w(Al_(2)O_(3))=12.14%,w(CaO)=8.81%,w(MgO)=4.25%,w(Fe_(2)O_(3)+FeO)=13.75%,w(K_(2)O+Na_(2)O)=3.95%,w(TiO_(2))=4.41%;与邻区同构造位置成功拉丝的纤维用玄武岩对比,其岩石学及主量元素特征基本一致,符合拟定工业指标,能够进行连续纤维拉丝;③依据勘查区矿体发育特征、矿石质量、交通位置、自然地理、地方经济、生态红线等优选出新的勘查靶区一处——马道子矿产地,具有较大的资源潜力,尽快实施普查找矿工作对四川省尤其雷波地区玄武岩纤维产业的发展起积极推动作用。
The Huanglang Valley exploration area in Leibo County is located on the eastern margin of Kangdian old land where the Emeishan basalt are widely exposed.This study evaluates the resource potential of the basalt for making fibers in the Huanglang Valley exploration area based on the geological mapping,drilling verification,sample test and microscopic study.The Emeishan basalt in the exploration area consists of compact massive basalt,amygdaloidal basalt and porphyritic basalt.The compact massive basalt is the main type of basalt for making fibers.The basalt for making fibers WS-I is 69.49 m thick,without intercalated stone,containing 48.89%SiO_(2),12.14%Al_(2)O_(3),8.81%CaO,4.25%MgO,13.75%Fe_(2)O_(3)+FeO,3.95%K_(2)O+Na_(2)O,and 4.41%TiO_(2) which meet the demands of industry.The Madaozi mine is selected as a new exploration target area.
作者
阳伟
刘顺超
牟文
臧凯
YANG Wei;LIU Shun-chao;MOU Wen;ZANG Kai(Sichuan Institute of Coal Geological Engineering Investigation and Design,Chengdu 610072;Longchang Bureau of Natural Resources and planning,Longchang,Sichuan 642150)
出处
《四川地质学报》
2022年第2期215-221,共7页
Acta Geologica Sichuan
基金
四川省政府性投资地质勘查项目资助:四川省雷波县黄郎沟纤维用玄武岩矿调查评价(DZ202008)。
关键词
雷波县
马道子矿产地
纤维用玄武岩
资源潜力
Leibo county
basalt for making fibers
resource potential
target optimization
