Detailed Notes on Crystal
Detailed Notes on Crystal
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17These rings are indicative of the crystal construction of nickel and will be described only by invoking wavelike Houses of light.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
the good state of many uncomplicated substances, which have an everyday shape and surfaces arranged in comparable styles
一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
第一种是“全包裹体”，在水晶结晶的时候把这些物质包裹在晶体里面，这类包裹体所形成的各种景象，大多保持了水晶结晶时的原状，也就是说保存了几亿年的原状，极少受到自然环境的影响。
You'll find many various crystals based upon geometric structures, crystal progress, and product. There is often preparations of hexagonal carbon atoms or amethyst which makes hexagonal pyramid constructions.
Not all crystals variety in h2o, but almost all crystals type precisely the same way, atoms come with each other and become a uniformed cluster. The method normally takes as little as a few days to maybe a thousand a long time. Normal crystals that originate from the Earth type precisely the same way.
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1A crystal chandelier lit the place.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
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Solids that have quick-range order but lack very long-variety order are referred to as amorphous. Just about any substance can be produced check here amorphous by immediate solidification through the soften (molten state). This condition is unstable, plus the stable will crystallize in time. If your timescale for crystallization is years, then the amorphous point out seems secure.
地质学家目前为止对晶洞形成还没有广泛认同的理论，但相信晶洞可以在任何埋藏的空腔内形成。这些空腔可以是火成岩中的气泡、树根下的空穴，甚至动物挖的地洞。经过漫长时间，空腔的外壁变硬，溶解的矽酸盐或方解石沉积到内壁。再经过漫长的时间，缓慢渗入的矿物使得晶体在空腔内部结晶。
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（progress traces）。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 labeled normally categories, for example insulators, metals, semiconductors, and molecular solids. A single crystal of an insulator is frequently clear and resembles a piece of glass. Metals are shiny Until they have got rusted. Semiconductors are sometimes shiny and sometimes clear but are in no way rusty. Numerous crystals might be labeled as only one type of solid, while some have intermediate behaviour. Cadmium sulfide (CdS) may be well prepared in pure type and is an excellent insulator; when impurities are added to cadmium sulfide, it gets an interesting semiconductor.
水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。