查询词典 pegmatite

However,rubellite is extraordinarily rare ,and its concentration from pegmatite is comparatively difficult,so the product of white tourmalina powder with high purity is few in market.

然而，红色电气石自然界十分稀少，一般产在伟晶岩中它的提取又比较困难，所以市场上纯度高的白色电气石粉产品很少。

Quartz core zones: Mineralisation occurs in enclaves of albitisation around the core of the pegmatite.

1石英核心带：矿化作用存在于被纳长石矿包围的伟晶岩核心。

It was found that the Schorl or dravite in schorl-dravite group that is produced from pegmatite and has good crystal degree had a strong intensity of spontaneous polarity by electron-beam bombardment and X-ray diffraction of varying the temperature.

利用电子束轰击结合变温XRD分析发现在Schorl-dravite系列电气石中，产于伟晶岩的，结晶度比较高的Mg电气石或Fe电气石具有较高的自发极化强度。

Mantle weak zones refer to mantle pegmatite associated with fluid activity, shear zone in mantle, and metasomatium zone.

幔内薄弱带是指地幔内与流体活动密切相关的地幔伟晶岩带，幔内剪切带及地幔富集带。

Formed hundreds of millions of years ago during the Palaeozoic era, it is believed that the pegmatite rocks found at the location of Alexandrite's discovery in the Urals in Russia and at Narsipattnanm are the same.

她形成于几百万年前的古生代，因此人们有理由相信有俄乌拉尔山脉伟晶岩层中发现的亚历山大石与在娜西帕特拉姆发现的亚历山大石同宗同脉。

The study of the elements in 31 accessory apatites in pegmatite field illustrates the usefulness ofPIXE in the measurement of elements in rocks and minerals.

应用质子激发X 射线方法分析克洛斯湖地区花岗伟晶岩中的31个磷灰石样品。

Similar to things of the Altay metallogenic province, mineralization of pegmatite rare metal deposits also occurred in East Tianshan Mountains during the Indosinian period.

与阿尔泰成矿省相似，东天山在印支期也发生了伟晶岩型稀有金属的成矿作用。

40Ar-39Ar method was used to date muscovite from the Jingerquan pegmatite rare metal deposit in Hami, Xinjiang and, as a result, some new isotopic geochronological data were obtained.

中文摘要：文章通过对哈密镜儿泉伟晶岩型稀有金属矿床中白云母的40Ar-39Ar同位素定年研究，测得该矿床的同位素年龄数据，其坪年龄为(243±2) Ma。

Pegmatite many specialty metal and non-metallic deposits carrier, the carrier of many gem minerals, such as quartz, beryl, tourmaline, topaz, Moonstone and so on.

伟晶岩是许多特种金属和非金属矿床的载体，也是许多宝石矿物的载体，如水晶、绿柱石、碧玺、黄玉、月光石等等。

Based on the elemental composition re-sults, The behavior of REE and other trace elements within the pegmatite system is discussed, the con-centration distribution of the substitution elements in apatite to their locations in the field and to the geo-chemical characteristics of the K--feldspars.

讨论在伟晶岩系统中稀土元素和其它痕量元素的行为以及磷灰石中元素浓度分布与地理位置的关系。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。