The main material is calcite (98%), with quartz, muscovite and opaques as additional components.

主要矿石为方解石（含量为98％），辅料成份有石英石、白云母和非透明矿石。

youdao

The main material is calcite (98%), with quartz, muscovite and opaques as additional components.

主要矿石为方解石（含量为98％），辅料成份有石英石、白云母和非透明矿石。

youdao