“褐铁矿”造句

有机物 、 褐铁矿和氧化锰的含量影响着成矿元素含量的变异.
The contents of organic material, limonite and manganese hydroxides influence the variation of ore element.

含铁氧化物的矿物有磁铁矿、赤铁矿、褐铁矿、钛铁矿等.
I. oxid, include magnetic iron orered iron ore , brown iron ore, etc.

锰结核主要由硬锰矿、软锰矿、褐铁矿构成.
The mineral components of nodules are mainly pyrolusite, psilomelane and limonite.

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