| 钕易解石 |
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| 引用本文： | 张培善,陶克捷.钕易解石[J].地质科学,1982,0(4):424-428. |
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| 作者姓名： | 张培善 陶克捷 |
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| 作者单位： | 中国科学院地质研究所 |
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| 摘 要： | 易解石为含稀土钛铌钽的复杂氧化物,钕易解石为化学组分中富含钕的易解石。即钛铌钽酸盐类矿物。钕易解石是比较罕见的矿物,它的发现和研究在理论和实用方面均具重要意义。 谢苗诺夫等最先确定出富钕的易解石,而列文星最早指出了命名的原则,谢苗诺夫则认为碱性花岗岩热液脉中或花岗伟晶岩中的易解石富钕。 本文对产自我国内蒙白云鄂博热液交代矿床中的钕易解石进行了分析、研究。
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| 关 键 词： | , |
| 收稿时间： | 1981-03-24 |
| 修稿时间： | 1981-03-24; |
AESCHYNITE-(Nd) |
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| Zhang Peishan,Tao Kejie.AESCHYNITE-(Nd)[J].Chinese Journal of Geology,1982,0(4):424-428. |
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| Authors: | Zhang Peishan Tao Kejie |
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| Institution: | Institute of Geology, Academia Sinica, Beijing |
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| Abstract: | Aeschynite-(Nd)(Nd,Ce,Ca,Th)(Ti,Nb)2(O,OH)6 occurs as massive and veinlet associated with aegirine,fluorite,magnetite,dolomite,and barite,in the Beiyun-Obo,Innermongolia,noth China.Its colour is brown to brownish black with a light yellowish brown streak,and it is adamantine luster.Specific gravity(by pycnometer)is 4.60-5.04 g/cm3.Mohs hardness is 5-6.In thin section it is yellowish orange to reddish orange; in reflected light it is dark grey.Average index of refraction is n=2.1-2.4.It is brittle,nonmagnetic,and radioactive.Aeschynite-(Nd)is uncompletely amorphous to X-rays.Before heating-it has several weak lines,but after heating up to 800℃the powder gives the whole lines which are agreed with that of standard aeschynite.It is obvious that the aeschynite-(Nd)belongs to orthorhombie system.The results of wet chemical analysis and crystal-chemical formula of several aeschynite-(Nd)are given.Its idealized formula is AB2X6.Neodymium is the predominant rare earth,with cerium as the most abundand lanthanides. |
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| Keywords: | , |
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