Facts About Crystal Revealed
Facts About Crystal Revealed
Blog Article
轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
Cite While each and every exertion continues to be manufactured to observe citation fashion rules, there might be some discrepancies. Be sure to make reference to the suitable model guide or other resources For those who have any inquiries. Find Citation Fashion
景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
There are also quite a few supplies that resemble crystals but are literally polycrystals. Polycrystals type when microscopic crystals fuse jointly to variety a strong. These elements will not consist of requested lattices.
无色水晶与无色长石因折射率和密度十分接近故较难区分。主要方法是放大检查。长石有两组极完全解理，显微镜下可见两组解理相交而成的“娱蛤状”包裹体或细直的纹理，而水晶则无解理发育，仅有时可见断续不规则的裂理。
水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
1A crystal chandelier lit the home.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
Metallic Crystals: Metals frequently variety metallic crystals, where by a number of the valence electrons are absolutely free to maneuver throughout the lattice. Iron, one example is, can variety unique metallic crystals.
crystal The newly crystallized quartz grains are characterised by elongate crystals oriented oblique for the shear band margins, defining a typical grain-condition foliation. 来自 Cambridge English Corpus We are saying the chain topology from the significant w region functions because the proverbial ' scratch-on-theglass ' desired within the natural chemistry laboratory for making crystals. 来自 Cambridge English Corpus The age scatter between the individual crystals could mirror incorporation of xenocrysts from earlier magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene varieties neutral to pale brown, subhedral to anhedral crystals, sometimes made up of inclusions of plagioclase microlaths and opaque phases.
The basic units of solids are either atoms or atoms which have combined into molecules. The electrons of the atom more info move in orbits that sort a shell composition round the nucleus. The shells are stuffed in a scientific get, with each shell accommodating only a small amount of electrons. Unique atoms have unique figures of electrons, which might be dispersed inside a attribute Digital composition of filled and partially loaded shells.
Crystals are not only renowned for their physical overall look, but distinct crystals of different elements and formations can lead to a vast selection of makes use of and Bodily Qualities.
在透明的水晶中，隐裂纹呈亮晶晶的片状，有时还会有晕彩效应。这些裂纹是水晶在生长过程中，遇到外力挤压而在内部产生的一些隐形裂纹，隐裂纹在芙蓉石、紫水晶、白水晶球及白水晶柱中都很常见。有的裂纹后来被物质填充，形成愈合的裂纹，也就是原来的裂纹又长住了。这种裂纹对水晶的影响相对要小一些。
The C60 molecules, also known as buckyballs, are very potent and Practically incompressible. Crystals are fashioned these kinds of that the balls are organized within an fcc lattice using a just one-nanometre spacing in between the centres of adjacent balls. The very similar C70 molecule has The form of the rugby ball; C70 molecules also sort an fcc crystal when stacked collectively. The reliable fullerenes sort molecular crystals, with weak binding—furnished by van der Waals interactions—between the molecules.