didymite

The deposit types include the greisen type,altered granite type,fractured zone alteration type and greisen-quartz vein type.

矿床类型包括云英岩体型、破碎带蚀变岩型、变花岗岩型和云英岩-石英脉型等4类。

A study on creep characteristics of mica-quartzose schist

云母石英片岩的试验蠕变特性研究

When we dig a tunnel in sericite quartz-schist with dobby drills,regular bending of the boreholes appears,which affects drilling speed and the borehole quality .

在绢云母石英片岩中开挖隧洞,使用多臂钻造孔爆破,出现钻孔有规律的弯曲现象,影响了钻爆速度和成洞质量。

AGES OF ZIRCONS FROM MID-ARCHAEAN GNEISSIC GRANITE AND FUCHSITE QUARTZITE IN THE GONGCHANGLING AREA,LIAONING

辽宁弓长岭中太古代片麻状花岗岩和铬云母石英岩的锆石年龄

A granitic rock composed chiefly of quartz and mica.

云英岩一种主要由石英和云母构成的花岗石

PETROFABRIC ANALYSIS OF A SMALL VIEN-QUARTZ FOLD IN THE QUARTZ-MICA SCHIST IN WUTAI,SHANSI

山西五台石英云母片岩中石英脉岩小褶?的岩?分析

Testing study on time effect of chlorite-schist and sericite-schist

绿泥石片岩和云母石英片岩时间效应的试验研究

Study on Triaxial Creep Mechanism and Creep Model of Mica-quartzose Schist at Dam Abutment of Heihe Reservoir

黑河水库坝肩边坡云母石英片岩三轴蠕变机理及蠕变模型研究

a granitic rock composed of quartz and mica.

一种由石英和云母构成的花岗石。

~(40)Ar/~(39)Ar Dating of Muscovite from Greisenized Granite and Geological Significance in Limu Tin Deposit

栗木锡矿云英岩化花岗岩白云母~(40)Ar/~(39)Ar年龄及其地质意义

Mylonitization and hydrothermal alteration impacts on U-Pb system of zircons:A case study of Fangcheng syenites in eastern Qinling Orogen

糜棱岩化-绢云母化对东秦岭方城正长岩中锆石U-Pb体系的影响

And the ore contains hydromica( illite), quartz, organic material and algal fossil.

矿石主要由水云母(利石)石英组成,含有机质及藻类化石。

magnesian limestone

白云石, 含镁石灰岩

Petrology and metamorphism of garnet-muscovite schist from high pressure metamorphic belt in central Qiangtang, northern Tibet, China

藏北羌塘中部高压变质带中石榴子石白云母片岩的岩石学和变质特征

To this class of substance belong mica, porcelain, quartz, glass, wood, etc.

属于这类物质的有云母、瓷器、石英、玻璃、木材等等。

Any of several varieties of quartz or feldspar flecked with particles of mica, hematite, or other materials.

矿金石一种石英或长石中，外加云母、赤铁矿或其它物质的颗粒

Both the core and the mantle have inclusions of biotite, hornblende, quartz and plagioclase.

内核和外壳中均发育石英、斜长石、黑云母、角闪石等矿物的包裹体 ;

Now, use your pocketknife to touch the mica and see what will happen.

现在你用小刀去触及岩石中的云母，看看会产生什么现象。

Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.

黑云母一般是镁铁质及超镁铁质岩石中的次要成分。

THE DISCOVERY OF PERCUSSION FIGURE OF BIOTITE FROM THE ARCHAEAN ROCKS AND ITS GEOLOGICAL SIGNIFICANCE IN BENXI AREA,LIAONING PROVINCE,CHINA

本溪地区太古宙岩石中黑云母击象的发现及其地质意义

We usually don't care whether a rock is classified as a granodiorte or diorite or tonalite.

我们通常并不注意某种岩石是属于花岗闪光岩或闪长岩还是英云闪长岩。