The lower tonstein layer is changing in thickness.
下部层位夹矸厚度变化较大。
The paper has in detail discussed the characteristics of the rock and minerals of the tonstein.
该文详细论述了粘土岩夹矸的岩矿特征。
The kaolinite tonstein in the seam5# is formed by acidic ash alterated in the acid medium in peat bog in tongchuan district.
铜川矿区5＃煤层中的高岭石泥岩夹矸是由酸性火山灰在近地表的成煤条件下经酸性水淋滤、蚀变而成的。
The original matter of the tonstein and its grain size are main reason for that the different textures of the tonstein are of different element contents in the same bed.
夹矸的原始组分及粒度大小是造成同一夹矸层中不同夹矸类型间元素含量差异的主要原因。
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.
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.
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。
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