Crystal for Dummies
Crystal for Dummies
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看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
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A standard idea in crystal structures will be the device mobile. It's the smallest device of volume that allows similar cells for being stacked with each other to fill all Place. By repeating the sample in the unit cell repeatedly in all directions, your entire crystal lattice might be made. A dice is the simplest example of a device mobile. Two other illustrations are proven in Determine one. The very first will be the device cell for your face-centred cubic lattice, and the 2nd is for a system-centred cubic lattice. These constructions are spelled out in the next paragraphs.
If you'd like to see how crystals are shaped, you can perform a little undertaking with your very possess kitchen area and see the formation from the crystals take place along with your possess eyes . This can be performed by Placing a little degree of desk salt into some regular faucet h2o, wait check here 24 hrs, and you'll see great cubed formations. This transpires as the drinking water is evaporating, which leads to the atoms that make up the salt (the mineral) as well as the water to come back closer collectively.
Fig. 4: Making blocks with different styles and area chemistries direct the formation of distinctive crystal symmetries.
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。
根据包裹体和主晶宝石之间形成的先后关系可将水晶的包裹体划分以下三种类�?
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
晶体 Silicon crystals developed in a very laboratory convert gentle into electrical Strength. 在实验室中长成的硅晶体可将光线转变为电能。
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（development lines）。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」。
The structure from the sodium atoms alone, or the chlorine atoms by yourself, is fcc and defines the unit mobile. The sodium chloride structure Therefore is designed up of two interpenetrating fcc lattices. The cesium chloride lattice (Figure 3A) is based about the bcc structure; just about every other atom is cesium or chlorine. In cases like this, the unit mobile is a dice. The third significant structure for AB
21You all know the way whenever you have a crystal prism and move a beam of daylight through it, you can get a spectrum, which appears like a steady band of rainbow shades.