New Step by Step Map For Crystal
New Step by Step Map For Crystal
Blog Article
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。
23Sometimes, on the other hand, the crystal form of the silicate inclusions is noticed to resemble far more intently the internal construction of diamond than that of other silicate minerals.然而，有时观察到硅酸盐包裹体的晶体形态比其他硅酸盐矿物更接近金刚石的内部结构。
水晶文化历史悠久，古人曾赋予它一串极富美感的雅称：水玉、水精、水碧、石英等。
③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。
Crystalline structure is characterised by a geometrical, repeating pattern of symmetric molecular construction. The arrangement of atoms sorts these purchased, repeating designs.
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。
水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：
Ionic Crystals: Electrostatic forces variety ionic bonds. A vintage illustration is often a halite or salt crystal.
Crystals are sometimes viewed as one thing of immense magnificence, and they are generally utilized with diamonds or other stones to help make items of jewellery. Many crystals now are man-made in laboratories.
Solids which have limited-variety purchase but absence long-array buy are called amorphous. Practically any content is often made amorphous by swift solidification within the soften (molten point out). This affliction is unstable, and the sound will crystallize in time. In case the timescale for crystallization is a long time, then the amorphous state appears steady.
One crystals of metals are soft and malleable, although polycrystalline metals are more challenging and stronger and tend to be more useful industrially. Most polycrystalline products is often created into massive solitary crystals following extended warmth treatment. Previously blacksmiths would heat a piece of metal to make it malleable: warmth helps make a few grains improve substantial by incorporating smaller sized ones. The smiths would bend the softened metallic into shape after which pound it awhile; the pounding would help it become polycrystalline once more, growing its energy.
Molecular Crystals: Entire molecules are bonded to one another within an structured manner. A good case in point is often a sugar crystal, which has sucrose molecules.
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。
crystal Alteration is variable: absent in lots of crystals, in Many others generating dense sericite aggregates which can exhibit some recrystallization outcomes to make coarser-grained white mica. From the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are sometimes organized in aggregates. With the Cambridge English Corpus Also, haloarchaeal cells have been embedded in salt crystals less than laboratory disorders and subsequently analysed by light-weight microscopy. From the Cambridge English Corpus The white clouds (usually sparse) were also greatly considered to be remaining made up of small crystals of water ice, alternatively like cirrus in our environment. With the Cambridge English Corpus They are really located in evaporite salt lakes and may be trapped in salt crystals in the course of evaporation. With the Cambridge English Corpus Thus, the cells (organelles and membranes) are wrecked mechanically by ice crystals, bringing about Dying via cell lysis. Within the Cambridge English Corpus The crystals had been used in the initial or 2nd orders of reflection. From your Cambridge English Corpus Within our 8xperiments, the crystals had been cubes using a foundation spot of eight e mm. Through the Cambridge English Corpus Vibration-assisted intermolecular hydrogen here tunneling in photoreactive doped molecular crystals : outcome of temperature and tension.