Not known Facts About Crystal
Not known Facts About Crystal
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17These rings are indicative of the crystal framework of nickel and will be defined only by invoking wavelike properties of sunshine.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。
一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
If you would like see how crystals are shaped, you may do some task inside your incredibly own kitchen area and see the development in the crystals come about with the possess eyes . This may be accomplished by Placing a small number of table salt into some common tap drinking water, hold out 24 hrs, and you may see nice cubed formations. This transpires since the water is evaporating, which will cause the atoms which make up the salt (the mineral) as well as water to come back closer jointly.
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
Learn the way The form of the crystals identify the various minerals into familiesMinerals crystallize In accordance with among seven motifs, often known as crystal techniques.
30Three times went past, and I was shocked to check out it once again: every one of the openings ended up sewed up by slim and white thread and they appeared such as ice crystal on winter's branches from the north.
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Among the binary crystals, the easiest buildings to visualise are Individuals with equivalent figures of the click here two varieties of atoms. The structure of sodium chloride is predicated on a cube. To build the lattice, the sodium and chlorine atoms are put on alternate corners of a dice, and also the structure is repeated (Figure 3B).
Crystals with clear flat faces are termed euhedral crystals, even though Those people missing defined faces are known as anhedral crystals. Crystals consisting of ordered arrays of atoms that are not generally periodic are identified as quasicrystals.
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。
Crystal Lattices You will discover seven systems of crystal constructions, which happen to be also called lattices or Place lattices:
水晶饰品越来越受到人们的喜爱。中国、日本、韩国、美国等国家的人们还对水晶球情有独钟，喜欢将它们摆在家里或办公室里，认为水晶球有灵性，能保平安，带来财运。不过天然水晶不像看起来那么晶莹剔透，它也有瑕疵，我们在选购饰品的时候要注意。此外，我们还要掌握水晶的评价依据、选购方法，这样可以帮助我们在琳琅满目的水晶饰品中选到心仪的水晶。
Tetragonal �?Characterized by 3 mutually perpendicular axes, two of which might be equivalent in duration, though the 3rd is for a longer period or shorter and perpendicular to another two.