石英质的

The lithologies of the Al rich rocks under ultra high pressure metamorphism in central China are characterized by kyanite topaz quartzite which has special mineral associations of kyanite, rich topaz,Mg rich chloritoid,coesite and diaspore.

我国中部在超高压条件下形成的高铝质变质岩石，以蓝晶黄玉石英岩为特征，具有以蓝晶石、富水黄玉、富镁硬绿泥石、柯石英、硬水铝石等为代表的高压－超高压变质矿物，矿物组合主要为蓝晶石＋黄玉＋石英、蓝晶石＋蓝刚玉±富镁硬绿泥石等。

Confirmation of high-pressure pelitic rocks in the north. The mineral assemblage of the early stage is gamet-Mg-rich chloritoid +phegite +quartz ±kyanite ±aragonite or gamet+Mg-rich chloritoid+phengite+paragonite+quartz, P-T conditions are 550±30℃ and 1.4～2.0GPa; the mineral assemblage of the late stage is muscovite +chlorite+quartz±albite, which undergone retrograde metamorphism of greenschist facies, P-T conditions are ＜550℃ and ＜0.6GPa.

确定北部高压变泥质岩石，早期矿物组合为石榴子石+富镁硬绿泥石+多硅白云母+石英±蓝晶石±文石或石榴子石+富镁硬绿泥石+多硅白云母+钠云母+石英，对应的温压条件为550±30℃和1.4～2.0GPa；晚期矿物组合为白云母+绿泥石+石英±钠长石，经受了绿片岩相的退变质作用，其温度小于550℃，压力低于0.6GPa。

A white or colorless vitreous insoluble solid; various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechartelierite.

一种白色或无色的玻璃质不溶固体，以各种形式广泛存在于地壳中，如石英、方石英、鳞石英等。

A loose, earthy, extremely fine-grained, natural sediment or soft rock composed primarily of clay-size or colloidal particles and characterized by high plasticity and by a considerable content of clay mineral and subordinate amounts of finely divided quartz, decomposed feldspar, carbonates, ferruginous matter, and other impurities; it forms a plastic, moldable mass when finely ground and mixed with water, retains its shape on drying, and becomes firm, rocklike and permanently hard on heating or firing.

中文解释=松散的、土质的、颗粒极细的天然沉淀物或软石，主要由黏土粒径大小或胶质的颗粒组成，特徵为具高可塑性，及大量的粘粒矿物，其次为的细小的石英、被分解的长石、碳酸盐、含铁物质和其他杂质；当精细研磨并和水混合后，可形成可塑的，适於模压的物质，乾燥后能维持形状，加热或烘烤时变得如岩石一般牢固，且长期保持坚硬。

Calidonian granites are widely developed in the Yema Nanshan area in the western segment of the Qilian orogenic belt. The geochemical characteristics of most of the granites are similar to those of adakites: SiO2≥56%, Al2O3≥15.0%, low MgO (average 2.04%), high Sr (257-889μg/g, average 546.42μg/g), low Y (7.1-25.3μg/g,average 16.67μg/g), average Sr/Y=5.89, no pronounced Eu anomaly and Sr positive anomaly. Adakites in this area have five rock types, quartz diorite, quartz monzodiorite, quartz monzonite, monzogrannite and hornblende granite. These rocks commonly contain hornblende, belonging to I-type granites.

提要：祁连西段野马南山一带发育大量的加里东期花岗岩，其中大部分花岗岩具有与adakite岩相似的地球化学特征，SiO2≥56%， Al2O3≥15.0％，低MgO（平均2.04％），高Sr(257～889μg/g，平均值546.42μg/g)，低Y（7.1～25.3μg/g，平均16.67μg/g），Sr/Y平均为35.89μg/g，Eu无明显负异常，Sr正异常，Adakite岩石类型有石英闪长岩、石英二长闪长岩、石英二长岩、角闪花岗岩、二长花岗岩，岩石中普遍含有角闪石，属I型花岗岩，地球化学图解反映该花岗岩形成环境为板块碰撞前的岛弧型，锆石U-Pb同位素年龄为444+38/-33 Ma，处在祁连造山带板块俯冲收缩阶段，因此可以推断野马南山埃达克质Adakite花岗岩是俯冲板片部分融熔和壳幔岩浆混合形成的。

Calculation of loss and gain of components in parentage and altered rocks during metasomatism, reveals that, in rubification and afforestation belts, the components brought in were K〓, CO〓, H〓O, and the components brought out were SiO〓, Ca〓 and Na〓, implying that the early ore-bearing hydrothermal fluids were rich in CO〓 and H〓O. SiO〓 brought out from potassic and chlorite alteration zones could serve as the main source for SiO〓 necessary in the formation of quartz veins, of silicification and of bericitization at shallow depth.

说明早期成矿流体为富含CO〓、H〓O等的碱性流体，其中钾化、绿化带中带出的SiO〓等是浅部石英脉、硅化、绢英岩化中硅质的主要来源，带出的Ca〓与成矿流体中的CO〓结合形成碳酸盐化，带出的Na〓则在浅部形成钠长石脉。

According to petrographic facies test, gravel sample mainly consists of quartz, albite, dolomite, and minor biotite; and sand sample is mainly made up of quartz and albite. As an important ASR active mineral, chalcedonite exists in fractures of dolomite and in matrix of cherty limestone. In rapid mortar bar test, expansion of sand, small gravel and middle gravel at 14 day are less than 0.1%, but keep increasing in long term.

岩相法检测显示卵石样品主要由石英、钠长石及白云石和少量云母类矿物组成，砂样品主要由石英、钠长石等矿物组成，重要的碱活性物质玉髓主要出现在白云岩裂隙和硅质灰岩的基质中；&砂浆棒快速法&检测结果显示砂、小石、中石样品14天的膨胀率均不超过0.1％，为非碱－硅酸反应活性骨料，但卵石样品仍具有一定的碱活性，且后期膨胀率一直持续增长。

Traditionally defined as a fibrous cryptocrystalline variety of Quartz, more recently, it has been shown that much Chalcedony is a mixture of Quartz and Moganite, another Silica mineral.

玉髓的传统定义是纤维状隐晶质石英变种，最近，人们发现大部分玉髓都是石英和Moganite(另一种SiO2，石英的同质异形体)的混合物。

The quartz in this region shows a array of deformations from High-temperature -High pressure condition to crust environments: coesite → the high-temperature quartz → sheared quartz vein → feldspathic shear zone (the quartz from two-mica schist)→ the ordinary quartz in eclogites.

7本区石英的变形构成了一个从高温高压到中上地壳的连续变形序列：柯石英→榴辉岩中高温石英→剪切石英脉→长英质剪切带(超高压二云母片岩中石英)→榴辉岩中普通静态重结晶石英。

According to the characteristics of craftwork and micromark of quartzitic jade jues unearthed from the ancient tombs of Henglingshan site, in particular to a pair of the fine jade jues from the tomb M177, it is conjectured that the jade jues are made by the natives and the technology is employed in which fixed revolving axis in the centre when drilling a hole in jade materials, and the special fixed tools and rigid polishing materials would be used also in cutting and polishing processes.

对其中M177墓出土的一对做工精美的石英质玉玦的基本特征、工艺及微痕进行了分析，推测当时使用了可以固定旋转轴的钻孔技术、硬度很高的抛光材料或专门的&垫托&工具。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。