铁矿

The Bolivian government has granted a company from India the rights to develop one of the largest iron ore deposits in the world.

玻利维亚政府已经批准了印度一家公司的铁矿开采权。该铁矿是全球最大的未开发的矿床之一。

Tin, columbite, lead and zinc were also exported, along with gold, and prior to the discovery of oil, the export of solid minerals served as a major foreign exchange earner; at one time, Nigeria was the world's largest exporter of columbite.

在发现石油之前，除了黄金，尼日利亚出口锡、钶铁矿、铅和锌，这些固体矿产的出口为尼日利亚带来了一大笔外汇收入。尼一度曾是世界上最大的钶铁矿出口国。

At the same time, the SEM study shows that gibbsite occurs on the sample surface. At 200 ℃, as dawsonite sandstone is being dissolved authigenic siderite forms. At 300℃, chlorite deposit on parts of the sample surface. The weak solution of dawsonite sandstone at 100℃ and the formation of siderite at 200℃ illuminate that CO2 being in carbonates in the strata can not be released when CO2 phase is adding to the system.

同时，各温度下样品表面均有一水软铝石放射状集合体沉淀。200℃时，随着片钠铝石的溶解有自生菱铁矿生成，300℃时样品局部有绿泥石沉淀。100℃下片钠铝石的微弱溶解及200℃下菱铁矿的形成表明，在地层条件下以碳酸盐矿物形式捕获的CO2，不会由于CO2的二次注入而重新释放。

A hard gray lustrous metallic element that is highly corrosion-resistant; occurs in niobite and fergusonite and tantalite.

一种坚硬有光泽的灰色金属元素，抗腐蚀性极强，见于铌铁矿、褐钇铌矿和钽铁矿中。

This paper used anhydrite associated with ferruginous mineral from Cheng Chao iron ore as primary raw material to develop successfully a new type of light wall material under the action of G N M J four compound excitation system and FX compound reinforcing fibre with suitable forming procedure.

本研究以武钢矿业公司程潮铁矿共生的硬石膏为主要原料，在广泛探索的基础上，筛选出G－N－M－J四元复合激发体系，有效地激发了硬石膏的活性，在FX复合纤维的增强作用下，采用合适的成型工艺条件，成功地研制出一种新型的轻质墙体材料—纸面硬石膏板，对试制样品的测试结果表明，各项性能达到或接近以半水石膏为主要原料的纸面石膏板的国家标准，为综合利用程潮铁矿的矿物资源开辟了新的途径，对硬石膏在新型建筑材料领域中的开发应用，更有着开拓性的意义。

Using xanthate as collector, and eleven frothers as separated frother to flota Yunfu pyrite, the open and closed circuit experiment results showed that: Rb 7, Rb 8 and no benzene oil are better frothers for Yunfu pyrite.

用黄药作捕收剂，分别用 11种起泡剂，浮选云浮硫铁矿，开路试验和闭路试验结果表明：Rb7、Rb8和无苯油是云浮硫铁矿较好的起泡

The decomposing kinetics of ilmenite in KOH sub-molten salt was investigated. The effects of factors, such as reaction temperature and particle size of the ore, on the decomposition rate of ilmenite were also studied.

摘 要：对钛铁矿在氢氧化钾亚熔盐体系中的分解动力学进行研究，考察反应温度及矿粒粒径对钛铁矿分解率的影响。

Our investigation shows that neither the dioritic porphyry nor the sedimentary rock is the source of iron ores, and that the source of most ironrich orebodies is the ore magmahydrothermal system in the deep chamber. Ore magma which was formed by liquid immiscibility is the main source of Gushan deposit, and the residual ironrich hydrothermal fluids which occurred as NaFeCl complex is the main source of Baixiangshan deposit.

根据野外观察和地球化学研究，文中认为，闪长玢岩岩体和沉积围岩均不是铁质的主要来源，富铁矿体的成因主要来自矿田深部的矿浆热液系统，姑山式铁矿的铁质主要是液态不混溶作用形成的铁矿浆，白象山式铁矿的铁质主要来源于深部残浆分离出的NaFeCl络合物。

Iron mine resource enriches,has "abnormal area of maximal world iron mine area Kursk magnetic force".

俄罗斯铁矿资源相当丰富，有世界最大的铁矿区—库尔斯克"磁力异常区"。

In the Victorian era, marcasite silver pendants, also other marcasite jewelry was very popular.

在维多利亚时代，铁矿银吊坠，也有其他铁矿珠宝是很受欢迎。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。