煤、煤层气、铝土矿、耐火粘土、铁矾土、含钾岩石等储量居全国首位；
Reserves of coal, coal bed methane gas, bauxite, refractory clay, potassic rock and so on rank first in China.
在高变质阶段的贫煤、无烟煤层中，煤层夹矸的粘土矿物成分以伊利石为主，高岭石次之。
In the lean coal bed and anthracite bed of high coal rank, the main composition of the clay mineral in the tonstein intercalations is illinite, Kaolinite takes second place.
应用推荐