A Simple Key For Crystal Unveiled

A Simple Key For Crystal Unveiled

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Not all crystals are equally crystalline. There will often be impurities, as well as ionic & covalent between molecules can make vastly unique structures out of the exact same product. A great example of this are diamonds and graphene.

An additional enjoyment, and delicious, experiment would be to type big crystals utilizing sugar. By heating sugar with drinking water after which permitting this solution evaporate on sticks, it is possible to form rock sweet from sugar crystals!

4Without a crystal ball, It can be extremely hard to state where we will be upcoming calendar year.不用水晶球预卜未来，我们说不准明年处境如何呀。《牛津词典》

Fig. seven: A template-directed solution can Regulate The location of making blocks over a surface area from the development of complicated structures.

There's also lots of supplies that resemble crystals but are actually polycrystals. Polycrystals form when microscopic crystals fuse with each other to variety a solid. These components tend not to encompass purchased lattices.

当二氧化硅结晶完美时就是水晶；结晶不完美的就是石英：二氧化硅胶化脱水后就是玛瑙；二氧化硅含水的胶体凝固后就成为蛋白石；二氧化硅晶粒小于几微米时，就组成玉髓、燧石、次生石英岩。

对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。

②固体包裹体：指呈固态相存在包裹体，多因岩浆、热液、变质作用等形成的早期结晶物被水晶捕获而形成。

24I want to make my indicating crystal crystal clear.我想把我的意思解释得清清楚楚。《牛津词典》

crystal The newly crystallized quartz grains are characterised by elongate crystals oriented oblique to the shear band margins, defining a standard grain-condition foliation. 来自 Cambridge English Corpus We are saying the chain topology from the substantial w location functions since the proverbial ' scratch-on-theglass ' wanted while in the natural chemistry laboratory to produce crystals. 来自 Cambridge English Corpus The age scatter among the the person crystals may possibly replicate incorporation of xenocrysts from previously magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene types neutral to pale brown, subhedral to anhedral crystals, at times that contains inclusions of plagioclase microlaths and opaque phases.

Solitary crystals of metals are smooth and malleable, although polycrystalline metals are more challenging and more robust and tend to be more handy industrially. Most polycrystalline resources could be manufactured into huge single crystals soon after extended warmth therapy. Up to now blacksmiths would heat a bit of metallic to really make it malleable: warmth tends to make several grains expand significant by incorporating scaled-down ones. The smiths would bend the softened metal into form and afterwards pound it awhile; the pounding would help it become read more polycrystalline once again, raising its toughness.

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。

压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。

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。