Fig. 6From: Laser ablation inductively coupled plasma mass spectrometry analysis of potash and m-Na-Al glasses in China- using Kernel methods for trace element analysisa U–Zr and b Ba-Sr concentrations (ppm) for Guangxi and Henan glasses. Average concentrations of Sr, Zr, Ba and U (ppm) with standard deviations of m-Na-Al-1 and m-Na-Al-3 glasses are referenced from [30]Back to article page