伟晶岩的

The presence of REE tetrad effects in apatites and whole rocks of S-type granites has been reported by Sha and Chappell (1999) and Zhao et al.(1999), respectively. The REE tetrad effect in minerals, such as apatite, spessartite, beryl, alkali feldspar and spodumene, from all zones of Altay No. 3 pegmatite has been found remarkable, and the fractionations among isovalent incompatible elements in these minerals are also significant. This paper puts forward that the REE tetrad effect is one of the basic features of peraluminous melts and the origin of REE tetrad effect might be probably related to some processes prior to the formation of pegmatite magma. The immiscibile liquid separation between silicate melt and hydrosaline melt may be responsible for it.

由于阿尔泰3号伟晶岩脉各带磷灰石以及与其共生的石榴石、绿柱石、碱性长石、锂辉石矿物均存在明显的稀土"四重效应"以及相同电价、相似离子半径的不相容元素间存在显著的分异，并结合最近赵振华等(1999)和Sha and Chappell(1999)报道S型花岗岩全岩和单矿物(磷灰石、独居石、长石、黄玉等)均存在稀土"四重效应"这一现象，本文研究提出，稀土"四重效应"是富挥发分过铝质岩浆体系的一个基本特征，其机制既不可能由含稀土的副矿物早期结晶引起残余熔体相中REE含量变化的结果，也不能定性地归因于流体相与熔体相相互作用过程中稀土元素在流体/熔体之间分异的结果，而很可能与伟晶岩岩浆形成之前某些过程密切相关，S型花岗岩岩浆在液相线以上存在硅酸盐熔体与高盐熔体的不混溶液相分离有可能是过铝质岩浆体系产生稀土"四重效应"的主要原因。

Its mineral composition may have different combinations of terms of feldspar, quartz-based, and granite is similar to "the granitic pegmatite."

其矿物成分可有不同的组合，若以长石、石英为主，与花岗岩相似，称"花岗伟晶岩"。

According to the experimental results of Watson (1978), and Ryerson and Hess (1980), pertaining to the distribution of trace elements between basic and acidic liquids in the temperature above magmatic liquidus, and the investigation of Webster (1997) on the melt inclusion in pegmatitic quartz from Ehrenfriedersdorf ore district, Germany, it should be drawn that there probably exists the liquid immiscibility in the early stage of pegmatitic evolution, due to the perphosphorus content in the magmatic systems. The perphosphorus feature of the melt is of great impact on the petrogenesis and matellogenesis of pegmatites.

1997对德国Ehrenfriedersdorf矿区伟晶岩石英中熔体包裹体的研究成果，我们推断在富磷岩浆体系中，在其演化的早期将出现由磷引起的液相不混溶作用，它对伟晶岩成岩和Be的成矿具有重大的影响。

Crystal is mainly post-magmatic hydrothermal ore-forming role and the role of pegmatite minerals.

水晶主要是岩浆期后热液作用和伟晶岩成矿作用的矿物。

They were first created in grainy dolomite and calcite marbles, and then formed in pegmatite that lay within a crystalline schist.

他们首次生产出了粒状白云石和方解石大理石，然后在伟晶岩内形成的结晶片岩所在。

Pegmatite is a kind of giant grain or coarse-grained structure of the igneous rock, Changcheng vein of output, and the distribution of clusters.

伟晶岩是一种具有巨粒或粗粒结构的火成岩，常呈脉状产出，并成群分布。

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。

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。

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。

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。