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主要矿物是高岭石，常见豆状、鲕状和碎屑状构造。
Their main mineral is kaolinite, usually in pisolitic, oolitic or clastic structure.
youdao
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主要矿物是高岭石，常见豆状、鲕状和碎屑状构造。
They are stratified, lenticular and funnel in shape.
youdao
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主要矿物是高岭石，常见豆状、鲕状和碎屑状构造。
They are stratified, lenticular and funnel in shape.
youdao