Crystal Things To Know Before You Buy
Crystal Things To Know Before You Buy
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天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
23Sometimes, nonetheless, the crystal type of the silicate inclusions is observed to resemble far more carefully The interior composition of diamond than that of other silicate minerals.然而，有时观察到硅酸盐包裹体的晶体形态比其他硅酸盐矿物更接近金刚石的内部结构。
10This is definitely the silicon chip—somewhat chip of silicon crystal.这是硅芯片——一个硅晶体的小芯片。
水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”
根据美国已经了解的情况，统计局的专家和其他人口统计学家在他们的视野中提供了一个不可抗拒的水晶球。
无色水晶与无色长石因折射率和密度十分接近故较难区分。主要方法是放大检查。长石有两组极完全解理，显微镜下可见两组解理相交而成的“娱蛤状”包裹体或细直的纹理，而水晶则无解理发育，仅有时可见断续不规则的裂理。
水晶内部有多种矿物包裹体，形成的各种景观可以肉眼观测，这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石，因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性，具有极高欣赏和收藏价值。
损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。
本词条由中国科学院大学地球与行星科学学院、中国科学院地质与地球物理研究所 参与编辑并审核，经科普中国·科学百科认�?。
Crystals with obvious flat faces are referred to as euhedral crystals, when Individuals missing defined faces are termed anhedral crystals. Crystals consisting of requested arrays of atoms that are not always periodic are referred to as quasicrystals.
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正常的水晶在生长时，多可以发现和柱形尖端棱线平行的生长纹（development strains）。由于在地底、岩洞中的生长空间多狭窄，尤其在遇到地震时，或地壳变动时，甚至容易遭到其他矿石的挤压，常常会压迫产生不同的「晶面」。还有，当水晶还是在液态状的时候，常常也会包覆着其他的矿石、泥灰一起结晶成长，如金红石（稍后变成发晶）、火山泥灰（稍后变成幻影水晶）等等。所有的这些，都是「自然的一部分」，请不要视为「瑕疵」。
Crystals are categorised normally groups, including insulators, metals, semiconductors, and molecular solids. Just one crystal of the insulator is generally transparent and resembles a piece of glass. Metals are shiny Unless of course they've rusted. Semiconductors are occasionally shiny and at times transparent but are in no way rusty. Many crystals is usually categorized as an individual form of solid, while some have intermediate behaviour. Cadmium sulfide (CdS) could be ready in pure form and is a superb insulator; when impurities are added to cadmium sulfide, it gets to be a fascinating semiconductor.
crystal Alteration is variable: absent in lots of crystals, in Other people making dense sericite aggregates which can display some recrystallization results to provide coarser-grained white mica. With the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are sometimes organized in aggregates. Within the Cambridge English Corpus On top of that, haloarchaeal cells were being embedded inside of salt crystals less than laboratory circumstances and subsequently analysed by light-weight microscopy. From the Cambridge English Corpus The white clouds (usually sparse) were also greatly viewed as getting composed of little crystals of click here drinking water ice, fairly like cirrus inside our environment. Through the Cambridge English Corpus They may be found in evaporite salt lakes and will be trapped in salt crystals in the course of evaporation. Within the Cambridge English Corpus Thus, the cells (organelles and membranes) are destroyed mechanically by ice crystals, leading to Demise via mobile lysis. From your Cambridge English Corpus The crystals ended up used in the 1st or second orders of reflection. With the Cambridge English Corpus In our 8xperiments, the crystals have been cubes which has a base spot of 8 e mm. From the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : impact of temperature and stress.