蚀变的砂岩和页岩是很重要的。
Alternating sandstones and shales are regarded as important.
蚀变的特征一般同C形的卷型矿化有关。
This alternation feature is commonly related to emplacement of C - shaped rolls.
矿区山前钾化带是钾化蚀变的产物，局部地段构成矿体。
Piedmont potassic alteration zone is the product of potash feldspathization, part of the zone is ore body.
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