The Basic Principles Of Crystal
The Basic Principles Of Crystal
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A solid is crystalline if it's got prolonged-range purchase. Once the positions of an atom and its neighbours are regarded at one position, the put of each atom is understood precisely all over the crystal. Most liquids deficiency lengthy-array buy, Despite the fact that several have limited-range purchase. Limited range is defined as the main- or next-closest neighbours of an atom. In lots of liquids the very first-neighbour atoms are arranged in precisely the same structure as inside the corresponding good phase.
无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度，越纯、越透明越好。干净的、无瑕疵的、杂质少的价值就高。无色的水晶如果很脏，就没有利用价值。
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。
Massive crystals of diamond are beneficial gemstones. The crystal has other fascinating Homes; it's the highest audio velocity of any reliable and is the greatest conductor of heat. In addition to diamond, the opposite frequent sort of carbon is graphite, which happens to be a layered content. Every carbon atom has 3 coplanar in the vicinity of neighbours, forming an arrangement called the honeycomb lattice. 3-dimensional graphite crystals are acquired check here by stacking comparable layers.
水胆水晶，包括气态，液态，固态，有时候可以同时多态并存，无色居多，个别情况下可见红色，绿色，黄色，蓝色，黑色等。
⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。
水晶原石观赏石，从字面意义理解：观赏水晶石的原貌，即经过抛光去皮后的包裹体水晶和原色水晶，不需雕刻不求象形就具有非常高的观赏价值和收藏价值。此类水晶观赏石对质地要求非常之高，水晶晶体通透干净，颜色艳丽，意境鲜明深刻的价值就高，它的价值特点就好比钻石，实实在在石头本身的价值。
Ionic Crystals: Electrostatic forces kind ionic bonds. A classic illustration is usually a halite or salt crystal.
24I want to make my meaning crystal obvious.我想把我的意思解释得清清楚楚。《牛津词典》
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
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。
水晶形成后由于外力作用或某种人为原因使水晶产生大的裂隙或裂纹，这种裂纹有大有小，对水晶的影响也有大小之分。
Crystals are categorized usually categories, such as insulators, metals, semiconductors, and molecular solids. Just one crystal of the insulator will likely be transparent and resembles a piece of glass. Metals are shiny Except if they may have rusted. Semiconductors are occasionally shiny and at times clear but are by no means rusty. Several crystals might be categorized as a single style of stable, while some have intermediate behaviour. Cadmium sulfide (CdS) is often organized in pure form and is a wonderful insulator; when impurities are extra to cadmium sulfide, it turns into an interesting semiconductor.
Tetragonal �?Characterised by a few mutually perpendicular axes, two of that happen to be equivalent in duration, although the third is extended or shorter and perpendicular to one other two.