The Main Chromitite Seam and the Merensky Reef do not outcrop well.
主铬铁岩矿层及麦仑斯基矿层出露不好.
Seams in the anorthosite series are only intermittently exposed.
斜长岩组中的矿层仅断续出露.
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.
Knowledge of the occurrence of chromite deposits is likewise incomplete.
对于铬铁矿矿层产状的了解同样是不完整的.
The country is level and it is not easy to follow the magnetite seams continuously.
地面是水平的,不容易连续地追踪此矿层.
Even within the southern sector , correlation of seams in the pyroxenite series is at present uncertain.
甚至在南段之内, 辉岩组中的矿层对比目前也不肯定.
The mine streched three miles into an ore bed.
矿山绵延三英里进入矿层.
A deposit of coal has been found in the basin area.
在这个盆地地区发现了煤矿层.
The lime - stone rocks bed up against the coal.
石为岩层紧靠着煤矿层.
Tangjia Pb - Zn deposit is hosted by dolomitite of the Dengying Formation of the Upper Sinian.
唐家铅锌矿床赋矿层位是上震旦统灯影组,矿体受构造控制.
Baitupo calcbentonite ore is mined easily owing to the stable, shallow buried bed with large thickness.
白土坡钙基膨润土矿层稳定 、 厚度大、埋藏浅、易采.
Host rocks are stable and lithology is similar which is typical marine strata deposit.
区域内赋矿层位稳定,岩性相近,具有典型的海相沉积矿产的特征.
Paoma Pb - Zn deposit cataclastic zone of Lower Cambrian Maidiping dolomite. There are two ore horizons.
跑马铅锌矿为产于下寒武统麦地坪白云岩中的层控矿床,主要受层间破碎带控制, 有两个含矿层,多呈层状产出.
Uranium content in rock is positively correlative to soluble organics and acidolysis hydrocarbon by statistical count.
统计计算表明:容矿层中铀和可溶有机物、酸解吸附烃含量之间具有明显的相关关系.
They didn't have to dig a lot as the coal was near the surface.
矿层离地表不远,他们不需要挖很深.