论文部分内容阅读
贵州省玉屏侗族自治县发现一大型重晶石矿床,蕴藏量约九百万吨,接近于国家规定的大型
A large barite deposit was discovered in Yuping Dong Autonomous County, Guizhou Province, with an estimated 9 million tons of reserves, close to the national regulations