斑晶

玄武岩斑晶Ne和Ar同位素组成均明显不同于MORB而接近于大气值，这种大气Ne和Ar同位素组分应来自于俯冲板片。

The phenocryst Ne and Ar isotope compositions are significantly different from MORB but similar to the atmosphere , suggesting their derivation from subducting slab .

电子探针成分分析显示，基质矿物组成与斑晶矿物组成相同，均是由斜长石、辉石和橄榄石组成；

The groundmass has the same mineral components as phenocryst , and is composed of plagioclase , augite and olivine .

长白山天池碱性熔岩中碱性长石斑晶的X射线研究

X-ray studies of alkali feldspar phenocryst from alkaline lava at tianchi , Changbaishan

辉石斑晶在BSE图像下呈两种不同的结构特点：辉石斑晶1发育反应边；辉石斑晶2不发育反应边，包含长石包体。

Orthopyroxene phenocryst exhibits two different appearances on their BSE images . One has well developed overgrowth . The other is characterized by fine inclusions of plagioclase , without overgrowth .

丹东地区花岗岩类岩石中碱性长石斑晶成因初探

Alkali-feldspar Phenocrysts of the Granitoids in Dandong Area , China

在有些高级矿石内，斑晶紧连着假晶。

In some high-grade ores , phenocrysts adhere intimately to the pseudomorphs .

变斑晶包体形迹研究的几个问题

Some problems in the studies of porphyroblast inclusion trails

乔治王岛第三纪火山岩含大量斜长石斑晶。

King George Island consists mainly of Tertiary volcanics which contain plentiful plagioclases .

在浅部岩浆房中，混合岩浆结晶形成斑晶的边部和微晶辉石；

The mixed magma at magma chamber crystallized microlites and the rim of phenocryst ;

鲁西峄山花岗岩中粗大钾长石斑晶成因探讨

Origin Study on Porphyritic Crystals in Coarse Feldspar of Yishan Granites in Western Shandong

变斑晶在不同的变形条件下，具有不同的变形行为，如旋转与非旋转性。

Under different deformation conditions , porphyroblasts have different behaviours such as rotation or non rotation .

剪切带中斑晶的运动学和变形分析及塑性大变形计算机模拟

Analysis for Kinetics and Deformation of Porphyroblasts within Ductile Shear Zones and Numerical Modeling in Large Plastic Deformation

在某些富锂、氟含稀有金属花岗岩的石英和钾长石斑晶中常见（半）雪球结构。

The snowball texture in quartz and K_feldspar phenocrysts is commonly observed in some Li_F enriched and raremetal_bearing granites .

韵律环带结构斑晶的成分变化均在正、反环带斑晶的成分范围之内。

The compositions of oscillatory zoning phenocrysts vary in the ranges of those for normal and reverse zoning phenoxcrysts .

硅酸盐相呈斑状结构，辉石和橄榄石矿物颗粒以斑晶形式分布于细粒的基质中。

Silicate phases exhibit a porphyritic texture in which pyroxene and olivine phenocrysts are embedded in a fine-grained groundmass .

岩体中捕虏体甚多，接触交代作用不明显。花岗质岩石具似斑状结构，钾长石斑晶分布极不均匀。

There arc many xenolithes in granite body and the contact-metasomatic action is not evident between granite and wall rocks .

一般地，对于某个岩浆房，我们认为其中斑晶的生长速率相同。

In general , for a magma chamber , is is believed that the growth rates of phenocrysts are the same .

石榴石变斑晶后生合晶反应边中外侧细粒斜方辉石、斜长石和石英集合体代表了峰后变质阶段；

Irregular fine grain assemblage of hypersthene , plagioclase and quartz at outer part of symplectic rims around porphyroblasts garnet is the post-peak mineral association ;

粒径达1-2mm的赤铁矿斑晶呈板状自形晶浸染于块状矿石中。

Hematite phenocrysts , up to 1 - 2 mm in size , can be seen to occur as euhedral laths disseminated in massive ores .

均一化包裹体电子探针分析结果显示，早期结晶的辉石斑晶所捕获的岩浆的酸性程度明显高于全岩。

The results of electron microprobe analyses of homogenized inclusions indicate that magmas trapped in the early crystallized pyroxene phenocrysts are evidently more acidic than host rocks .

斑晶石英内流体包裹体中的不混溶作用与岩浆的初始沸腾有关；硅化脉石英捕获的流体包裹体与岩浆的二次沸腾有关；

The immiscibility of fluids inferred by the inclusions in quartz phenocrysts resulted from the first boiling of magma and that in vein quartz from the second boiling .

两个黑云母斑晶的坪年龄分别为13.5±1.0Ma和13.42±0.10Ma；

The two biotite phenocrysts yield plateau ages of 13 . 5 ± 1 . 0 Ma and 13 . 42 ± 0 . 10 Ma , respectively .

两者在斑晶类型、主元素和微量元素丰度和同位素比值等方面都存在区别，但显示了相同的稀土元素分配型式。

The two series have different types of phenocryst , chemical composition , trace element pattern and ratio of isotopic element , but they show similar REE patterns .

本文论述了招菜地区与金矿关系密切的花岗岩，尤其是郭家岭斑状花岗岩中，发育大量的钾长石斑晶。

Potash feldspar porphyroblasts occur in large quantity in the granite closely related to the gold ore deposits in the Zhaoyuan-Yexian area , especially in the Guojialing porphyritic granite .

两个斜长石斑晶分别给出了12.22±0.05Ma和12.5±1.3Ma的坪年龄。

Meanwhile the two plagioclase phenocrysts yield their plateau ages of 12 . 22 ± 0 . 05 Ma and 12 . 5 ± 1 . 3 Ma , respectively .

而碳酸岩的碳氧及斑晶磷灰石的锶、钛同位素组成与典型地幔物质有差异，与富集地幔颇为近似，从而证实在山东地区陆壳下存在富集地幔源区。

Some differences are found in O and C isotopic composition between phenocryst apatite and typical mantle materials , but the apatite is similar to that from the enriched mantle .

斑晶（石英）中流体包裹体具有饱和及过饱和盐水蒸气沸腾流体包裹体组合的特征，缺乏熔融包裹体。

The fluid inclusions in the phenocrysts ( quartz ) show the features of the assemblage of saturated and oversaturated saline water vapor boiling fluid inclusions and are lacking in melt inclusions .

这一事实以及具有成分生长环带石榴石变斑晶的存在，为榴辉岩形成在更高温度（>940℃）和更高压力（>4.5GPa）条件下提供了有力的证据。

This fact and the existence of garnet porphyroblasts with growth zoning suggest that the eclogites formed at higher temperature ( 940 ℃) and pressure ( > 4.5GPa ) than those estimated by previous workers .

岩浆中斑晶的结构和成分特征记录了岩浆房的演化和岩浆喷发时从深部上升的速率和过程以及定位后的改造过程。

The texture and composition characteristics of the phenocrysts in the magma recorded the rate and process of the evolution and eruption of magma chamber from deep source and the transformation process after the positioning .

由早期到晚期具有叶理构造减弱，包体数量减少，压扁程度降低，斑晶定向逐渐消失的变化趋势。

From the early to late stages the units had the following trends of change : foliation weakened , inclusions were reduced and their degree of flattening lowered and the preferred orientation of the phenocrysts disappeared gradually .