硬石膏

Eodiagenesis is characterized by the assemblage of carbonate-analcime-anhydrite, while authigenic kaolinite is found in some strata.

浅埋藏期以碳酸盐～沸～膏组合为特征。

The shallow polyhalite potash deposit in Sichuan are distributed in the north plunge top of Huayingshan anticline where is anhydrock of earlier Mesozoic Triassic period.

四川浅层杂卤钾矿分布于华蓥山背斜北倾没三统膏岩层。