Resinite is a rich n1aceral in Teriary humic coal,boghead-cannel coal and oil shale fromHuangxian Coalfield.

黄县田第三纪、藻烛、页岩显微组分富含树脂体。

More ammonium sulphate solution is being recovered in the process of distilling oil shale.

在提炼页岩的过程中回收的硫酸铵液比过去多了。