Crystal for Dummies
Crystal for Dummies
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Not all crystals are equally crystalline. There are often impurities, as well as the ionic & covalent involving molecules can generate vastly diverse constructions out of a similar content. An awesome illustration of this are diamonds and graphene.
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人造水晶分为熔炼水晶与养殖晶：据水晶专家汪毅的阐述，随着水晶的价值提高，喜欢的人增多，水晶也引起了作伪者的兴趣，现阶段中国水晶市场常见的造假方法为：
Insert to term list Include to word listing C2 [ U ] clear glass of extremely high-quality, typically with its area Slice into delicate designs
Fig. four: Creating blocks with distinct styles and surface chemistries immediate the formation of unique crystal symmetries.
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。
解理：无解理。所谓解理是指矿物被打击时，沿一定方向有规则地裂开形成光滑平面的性质。根据解理的程度可以分为五类：极完全解理、完全解理、中等解理、不完全解理和无解理，水晶属于无解理。
Like a very hot Remedy cools or possibly a saturated Alternative evaporates, particles attract near adequate for chemical bonds to type. Crystals may also type from deposition straight from the fuel stage. Liquid crystals have particles oriented in an arranged fashion, like solid crystals, still can stream.
Crystals are frequently viewed as one thing of immense attractiveness, and so they are commonly made use of with diamonds or other stones to create pieces of jewelry. Nearly all of crystals now are person-created in laboratories.
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
One crystals of metals are tender and malleable, although polycrystalline metals are more durable and stronger and are more helpful industrially. Most polycrystalline resources could be manufactured into massive solitary crystals immediately after extended heat treatment. Before blacksmiths would heat a bit of metal to more info really make it malleable: warmth helps make a few grains develop large by incorporating more compact ones. The smiths would bend the softened metal into form and after that pound it awhile; the pounding would enable it to be polycrystalline all over again, raising its power.
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 classified usually types, for example insulators, metals, semiconductors, and molecular solids. Only one crystal of the insulator is usually clear and resembles a piece of glass. Metals are shiny Unless of course they have rusted. Semiconductors are sometimes shiny and occasionally transparent but are by no means rusty. Quite a few crystals might be categorised as only one sort of reliable, while some have intermediate conduct. Cadmium sulfide (CdS) might be ready in pure type and is a wonderful insulator; when impurities are added to cadmium sulfide, it becomes an interesting semiconductor.
Another type of crystalline carbon relies on the molecule with sixty carbon atoms referred to as buckminsterfullerene (C60). The molecular shape is spherical. Each carbon is bonded to a few neighbours, as in graphite, and the spherical form is realized by a mix of 12 rings with 5 sides and twenty rings with 6 sides. Similar buildings were being 1st visualized from the American architect R. Buckminster Fuller for geodesic domes.