他们开出一个富铁矿层。
在石煤层或其上部的碳质页岩中含黄铁矿层。
In the stone coal layer and the overlying black shale, there is a pyrite layer.
织金煤田西南矿区龙潭组、长兴组广泛发育菱铁矿层。
Siderite is vastly developed in the Longtan, Changxing formations in southwestern mine area, Zhijin coalfield.
这种大规模巨厚的贫铁矿层中还含有优质的鞍山式富铁矿。
There is a high quality Anshan type ferrian deposit in the large, thick, poor iron ore beds.
火山演化从早期到中晚期分别形成铁矿层、火山成因块状硫化物矿床和黄铁矿化层。
Early to late stage volcanic evolution resulted in the formation of iron formations, sulfide deposits and pyrite mineralization beds.
在穆斯科克斯杂岩体中，铬铁矿矿层仅产于长石质橄榄岩中。
The chromite deposits in the muskox complex occur only in feldspathic peridotite .
在穆斯·科克斯杂岩体中，铬铁矿矿层仅产于长石质橄榄岩中。
The chromite deposits in the muskox complex occur only in feldspathic peridotite.
赋矿层位中富含磁黄铁矿、黄铁矿、锰铝榴石和锰铁闪石。
Ore bearing stratum contain richly pyrrhotite, pyrite, spessartine and dannemorite.
赋矿层位中富含磁黄铁矿、黄铁矿、锰铝榴石和锰铁闪石。
Ore bearing stratum contain richly pyrrhotite, pyrite, spessartine and dannemorite.
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