Crystal Fundamentals Explained

Crystal Fundamentals Explained

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Not all crystals are Similarly crystalline. There tend to be impurities, and the ionic & covalent concerning molecules can create vastly various constructions out of the same material. An incredible example of this are diamonds and graphene.

按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。

天然水晶是不可再生资源，随着开发的深入，天然水晶存量已越来越少，为了可持续发展，东海县政府早就制定了保护本地资源，鼓励开发海外水晶资源的政策，但是，海外资源也越来越少，很多国家都提高了开采和出口天然水晶的门槛，进入东海市场的外国水晶价格连年暴涨，其中观赏水晶比普通水晶涨价更快。

Insert to word listing Incorporate to word checklist C2 [ U ] clear glass of extremely high-quality, generally with its area Slice into delicate styles

Crystalline structure is characterized by a geometric, repeating pattern of symmetric molecular composition. The arrangement of atoms types these purchased, repeating styles.

发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。

根据包裹体和主晶宝石之间形成的先后关系可将水晶的包裹体划分以下三种类�?

There exists a comparable directive about crystal glass which differentiates concerning entire guide crystal, lead crystal and crystal.

包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。

crystal The newly crystallized quartz grains are characterised by elongate crystals oriented oblique into the shear band margins, defining a normal grain-condition foliation. 来自 Cambridge English Corpus We are saying the chain topology while in the high w area functions as the proverbial ' scratch-on-theglass ' desired while in the natural chemistry laboratory to generate crystals. 来自 Cambridge English Corpus The age scatter among the individual crystals may perhaps reflect incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene sorts neutral to pale brown, subhedral to anhedral crystals, at times containing inclusions of plagioclase microlaths and opaque phases.

⑥、丝印：水晶表面附有不同的色料进行效果处理，颜色层面较厚，着力后方可脱落。

隐晶类水晶外观是一块块的，不是成六角水晶簇状，但他们却也是属六方晶系的。但我们不能以肉眼观察到他们的六角形结晶，因为结晶的体积极为细小，需以显微镜协助下才能看到六角开结晶。而此类水晶非常平滑，因为结晶之间有“水化硅石”填补，玛瑙便属于此类。

Crystals are labeled normally classes, such as insulators, metals, semiconductors, and molecular solids. One crystal of here an insulator is often clear and resembles a bit of glass. Metals are shiny unless they've rusted. Semiconductors are sometimes shiny and at times clear but are never rusty. A lot of crystals is usually labeled as one style of stable, while some have intermediate conduct. Cadmium sulfide (CdS) can be ready in pure form and is a wonderful insulator; when impurities are extra to cadmium sulfide, it gets a fascinating semiconductor.

This crystal construction is to blame for the unique physical and chemical Attributes of sodium chloride, which include its high melting place, electrical conductivity, and ability to form ionic bonds easily.