The kaolinite tonstein in the seam 5# is formed by acidic ash alterated in the acid medium in peat bog in tongchuan district.
铜川矿区5#层中高岭石泥岩夹矸是由酸性火山灰在近地表件下经酸性淋滤、蚀变而。
The kaolinite tonstein in the seam 5# is formed by acidic ash alterated in the acid medium in peat bog in tongchuan district.
铜川矿区5#层中高岭石泥岩夹矸是由酸性火山灰在近地表件下经酸性淋滤、蚀变而。
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