变晶

BaSan Jade is a kind of new jade, which has been appeared in China in recent years. It's main mineral is jadeite with some amphibole and pyroxene. The main character of texture under microscope is granular blastic texture. The color of it is similar with jadeite jade very much, but they are different of essence.

八三玉是我国近年出现的一种新品玉石：主要成分是硬玉，其次有少量辉石族矿物和闪石族矿物；显微结构以粒状镶嵌变晶结构为主；颜色与翡翠十分相似，而实质上又有差异。

The ore mainly has cyclopean granular texture andmassive and laminar structures.

矿石以镶嵌粒状变晶结构，块状和纹层状构造为主。

The mineral chemistry, trace elements and Sr-Nd isotopic geochemistry of different types of deep-seated inclusions indicate that Group Ⅰinclusions in western Shaudong could be the relicts of high degree of partial melting of the mantle-derived peridotites and then subjected to mantle metasomatism; the dunite and harzburgite in Group Ⅱ inclusions could be resulted from the metasomatism of silica-rich melts in the upper mantle; the olivine-pyroxenite and pyroxenite in Group Ⅱ and Group Ⅲ inclusions could be magmatic cumulates derived from magma underplating in the upper mantle.

不同结构类型深源岩石包体的矿物化学、元素和同位素地球化学研究表明，鲁西具有变质变形结构特征的橄榄岩类岩石包体为岩石圈地幔橄榄岩部分熔融后的残留体，其后又遭受了地幔交代作用的改造；具有变质变形结构，并叠加有矿物反应结构的纯橄岩和方辉橄榄岩类包体为古老岩石圈地幔被富硅质熔体改造的结果；具有残留岩浆结晶结构的橄榄岩、橄辉岩类岩石包体以及具有变晶结构或堆晶结构的辉石岩类包体为地幔更早期岩浆作用的在上地幔的堆积体。

Mine is too ancient geological ore mixed granite and granite porphyry, ores major components of SiO2, accounting for 76.54%, Al2O312.56%, Qianhui, the fine-grained gray granite block change crystal structure, long-ramp of 27 -- 36 percent, longer-35-42 percent, 20-29 percent quartz, rock weighing 2.6 T/m3, hardness of 5.9-6.3 degrees, the porosity of 0.62-1.03 percent, compressive 1670-1931 kg/cm2, bending 141-167 kg / cm2, ore reserves 2000 investigation Grade D geological reserves 10.02 million cubic meters, designed for the use of reserves of 7.99 million cubic meters; mining area of 0.4 cubic kilometres, the highest elevation of 151 meters, the minimum 56 meters, hilly slope, with perennial Shuixi, More sparse vegetation.

矿山地质矿体属太古代混合花岗岩及花岗斑岩，矿石主要成分SiO2，占76.54%，Al2O312.56%，浅灰，灰白色的细粒花岗变晶块状构造，斜长石含量27-36%，更长石35-42%，石英20-29%，岩石体重2.6T/m3，硬度5.9-6.3度，孔隙度0.62-1.03%，抗压1670-1931kg/cm2，抗折141-167kg/cm2，矿石储量2000勘测D级地质储量1002万立方米，设计利用储量为799万立方米；矿区面积0.4立方千米，最高海拔为151米，最低56米，丘陵缓坡，无常年水溪，植被较稀疏。

The second deformational level was Xibet-Fuyun meso-deep level crystalloblast mylonite belt, formed at a condition of higher temperature and pressure.

齐伯度-富蕴变晶糜棱岩带岩石变形温度压力条件高，以右行剪切为特点，具有完全不同的地质演化历史，反映它可能是在古生代期间被强烈改造的具有前震旦纪结晶基底的微大陆的残块。

The mantle-derived peridotite inclusions with protogranular texture and porphyroclastic textures;(2) the pyroxenite inclusions with cumulate texture; and (3) the granulite and gneisses with crystalloblastic textures.

辽西的深源岩石包体也有三种结构类型：①具有原生粒状结构、残碎斑结构的幔源橄榄岩类岩石包体；②具有堆晶结构的辉石岩类包体；③具有变晶结构的麻粒岩和片麻岩类岩石包体。

It occurs in granodioritic porphyre and granitic porphyre and the spatial distribution of the jade veins are controlled by lithology. The raw jade is in multi-colors with scaly blastic and massive textures under microscope. Wallrock alteration is developed and characterized by zoning as sericitization, kaolinization and pyritization.

玉石矿脉的空间分布受岩性控制，赋存于花岗闪长斑岩或花岗斑岩中；玉石原石色彩多样，岩石以显微鳞片变晶结构和块状构造为主；矿区围岩蚀变发育，具有绢云母化、高岭土化和黄铁矿化的蚀变分带现象。

Most significantly the site provides a number of slide images on the following subjects: Isograds and chemical reactions in regional metamorphism, chemical reactions in rocks, interplay of nucleation and growth, the origin of porphyroblasts, crystal size distributions, feedback mechanisms, the metamorphic aureole of the Bushveld Complex and reconciling theory and observation, the critical overstep for andalusite growth.

网站还提供了一些重要的幻灯片图片，内容涉及到：等变质级、局部变质化学反应、岩石化学反应、晶核形成与发育的相互关系、斑状变晶起源、晶体大小分类及红柱石发育限度评估。

GroupⅠ, the peridotite inclusions with typical pyrolite textures (metamorphic and deformation textures);(2) GroupⅡ, the peridotite and olivine-pyroxenite inclusions with metamorphic and deformation textures and overlaid mineral reaction textures or relic magmatic crystalline textures or/and cumulate textures; and (3) GroupⅢ, the pyroxenite inclusions with crystalloblastic texture and cumulate textures.

深源岩石包体的岩相学表明，鲁西深源岩石包体具有三种结构类型：①具有典型地幔岩结构的橄榄岩类岩石包体；②具有变质变形结构，并叠加有矿物反应结构以及残留有岩浆结晶结构的橄榄岩、橄辉岩类岩石包体；③具有变晶结构或堆晶结构的辉石岩类包体。

The Pl-lherzolite differs from the cumulates in having blastic texture and high-temperature deformed fabric of Ng[100] characteristic of the mantle peridotite and yielding orthopyroxene.

含长二辉橄榄岩以其具有地幔橄榄岩特有的变晶结构和Ng(100)高温变形组构，以及含斜方辉石等特点而区别于堆晶岩。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。