Facts About Crystal Revealed
Facts About Crystal Revealed
Blog Article
天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
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。
发晶的价值取决于发的颜色、罕见性及大小，一般是发色鲜艳、块度大的价格高。水胆水晶的价值主要取决于水胆及晶体的大小、透明度的高低。如果水胆较大并有一定形态，便可加工成较为珍贵的工艺品。另外水胆中的水也有一定的科学研究价值，通过它们可了解几百万年前地球上水的成分及变化。
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。
2She was carrying a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
Not all crystals variety in water, but almost all crystals form precisely the same way, atoms come collectively and turn into a uniformed cluster. The method can take as minimal as a couple of days to maybe a thousand many years. Organic crystals that come from the Earth sort the identical way.
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。
11I carefully opened the package deal and located a crystal bell inside of.我小心地打开包裹，发现里面有一个水晶钟。
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：
英语-中文（简体） word #beta Beta /beta #preferredDictionaries ^picked identify /selected /preferredDictionaries
用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。
You will discover just a few distinct device-mobile designs, so a number of crystals share a single device-cell variety. An essential characteristic of a device mobile is the quantity of atoms it has. The whole number of atoms in your complete crystal would be the number in Each individual cell multiplied by the number of unit cells. Copper and aluminum (Al) Every have a Crystal single atom per unit mobile, while zinc (Zn) and sodium chloride have two. Most crystals have only a few atoms for each device mobile, but there are a few exceptions. Crystals of polymers, one example is, have Many atoms in Each individual device cell.
The framework from the sodium atoms on your own, or the chlorine atoms by itself, is fcc and defines the unit cell. The sodium chloride structure As a result is produced up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) relies around the bcc structure; just about every other atom is cesium or chlorine. In such a case, the device cell is really a cube. The 3rd crucial structure for AB
Fig. 5: The chance to notice outlined crystal practices is dependent on the symmetry engineering strategy.