铌铁矿

本文在研究苏州花岗岩中铌铁矿的基础上，首次在该地区发现了钽铁矿。

On the basis of detailed studies on columbite from the Suzhou granite , tantalite has been found for the first time in this granite .

本文对TiO2的同质多象变体：金红石、锐钛矿、板钛矿和铌铁矿结构型TiO2-Ⅱ分别进行了群论分析，并对实测拉曼光谱进行了归属讨论。

In this paper , the TiO_2 polymorphs : rutile , anatase , brookite and columbite-type TiO_2 - ⅱ were analysed respectively according to the group theories , and the Raman spectra of these phases measured at ambient conditions were discussed for their assigment .

研究了前驱体合成（又称铌铁矿合成）与传统的氧化物混合合成，对PMN-PNN-PZT四元系压电陶瓷性能的影响。

Mainly researched was the effect on properties of PMN-PNN-PZT piezoelectric ceramics for different synthesizing process named precursor synthesis and oxide compound synthesis .

铌铁矿固相合成及碳热还原机理研究

Study on Solid-Phase Synthesis and Mechanism of Carbothermal Reduction of Niobite

双膦酸对铌铁矿的捕收特性影响及其作用机理

Effect of diphosphonic acid on niobite collecting property and its action mechanism

包头铌铁矿冶炼实验室研究

Experiment Research on Smelting of Baotou Niobium Ore with High Iron Content

一种灰色金属元素，软质，易延展，用于合金中，见于铌铁矿，以前称作钶。

A soft gray ductile metallic element used in alloys ; occurs in niobite ; formerly called columbium .

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。

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

一种由铁和锰的钽氧化物组成的矿物，与铌铁矿共生，亦见于粗糙的花岗岩中，是一种钽矿石。

A mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite ; an ore of tantalum .

采用普通固相合成法和铌铁矿前驱体法合成了CaO-MgO-Nb2O5-TiO2微波陶瓷粉体，讨论了这两种粉体制备方法对CaO-MgO-Nb2O5-TiO2微波陶瓷微观结构和介电性能的影响。

The powders of CaO-MgO-Nb_2O_5-TiO_2 ceramic were prepared by two methods , solid reaction method and precursor method . The effect of the two synthesis methods on microstructure and dielectric properties of CaO-MgO-Nb_2O_5-TiO_2ceramics were discussed in this paper .

铌钽铁矿类质同象系列的X射线粉晶分析讨论

A discussion on X-ray powder analysis of the isomorphous series of columbite-tantalite

铌钽铁矿KOH亚熔盐浸出过程Fe的转化行为

Conversion Behavior of Iron in Process of Niobium-Tantalum Ore Leached with KOH Sub-Molten Salt

对KOH亚熔盐浸出铌钽铁矿过程中Fe的转化行为进行了热力学计算分析。

The conversion behaviour of iron in the process of niobium-tantalum ore leached with KOH sub-molten salt was investigated by thermodynamic calculation and analysis .

内蒙某稀土-铌-铁矿床中稀土赋存状态分析方法的研究

Methodological studies on chemical analysis of existing states of rare earths in ree-nb-fe-deposits , Nei monggol , China

白云鄂博超大型稀土-铌-铁矿床成矿过程中的流体不混溶作用

Fluid unmixing / immiscibility as an ore-forming process in the superlarge REE-Nb-Fe deposit , Inner Mongolian , China

主要有用矿物为铌钽铁矿，呈粒间嵌存于钠长石花岗岩基质中，占总量的95.04%。铌钽铁矿的嵌存关系与云母、长石最为密切，占93.99%，极少数与锆石连生。

The main useful minerals are columbium-tantalum-iron ores inlaid within albite granite matrix in granular , accounting for 95.04 % of total amount .

白云鄂博稀土-铌-铁矿是世界最大的稀土多金属矿床之一，主要产于中元古界富钠岩石、白云岩和富钾板岩中。

The giant Bayan Obo REE-Nb-Fe deposit is the world 's largest REE deposit , which is hosted mainly by Middle Proterozoic Na-rich rocks , dolomitic rock and K-rich slate .

海南蓬莱刚玉巨晶中铌（钽）铁矿包裹体及其意义

Tantalic columbite inclusions in corundum Megacrysts in penglai , Hainan

内蒙白云鄂博铌、稀土、铁矿床的成矿时代和矿床成因

Metallogenic epoch and genesis of the Bayan Obo niobium-ree-iron deposit , Inner Mongolia

讨论了铌（钽）铁矿的形成与刚玉巨晶的关系，认为刚玉巨晶的形成可能和岩浆混合或上地幔流体交代作用有关。

According to the composition and other evidences , it is concluded that the formation of corundum megacrysts may be related to mixing of magmas or alteration of fluids in the upper mantle .