A slag nugget unearthed from the Shang Dynasty City Site in Yuanqu,Shanxi of China in 1993 is investigated by polarized light microscopic analysis and SEM analysis.

• 采用偏光矿相显微镜、扫描电镜能谱分析等方法研究1993年垣曲商城出土的一块炉渣样品。