Kaolinite,dickite and nacrite are polytypes of the kaolinite family,in which kaolinite is quite commmon while nacrite is very rare in nature.

珍珠陶石、地开石石是石亚矿物的三种多。

The research results show that the main minerals in "Di" of Changhua Chicken Blood Stone are dickite and kaolinite, and minor minerals are alunite, halloysite, quartz and pyrite, et al.

“地”到“刚地”,地开石逐渐减少,石、明矾石、石英黄铁矿逐渐增多。