A Simple Key For Crystal Unveiled
A Simple Key For Crystal Unveiled
Blog Article
李商隐，杜牧，白居易，欧阳修，苏轼，呈大昌，辛弃疾，杨万里，吴文英，杨基，魏源等诗坛，词林大家都有歌吟水晶的佳篇传世。
按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。
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。
Most reliable elements found in mother nature exist in polycrystalline kind rather then as just one crystal. They are literally composed of many grains (little crystals) packed jointly to fill all space. Each individual particular person grain has a distinct orientation than its neighbours. While extended-vary order exists within just one grain, on the boundary between grains, the ordering adjustments route. A normal bit of iron or copper (Cu) is polycrystalline.
Fig. 4: Creating blocks with unique shapes and floor chemistries immediate the formation of distinct crystal symmetries.
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。
Include to term record Incorporate to word listing [ C/U ] transparent rock that looks like ice, or maybe a bit of it
Ionic Crystals: Electrostatic forces type ionic bonds. A vintage illustration is often a halite or salt crystal.
Crystals tend to be seen as something of huge natural beauty, they usually are commonly utilised with diamonds or other stones for making parts of jewellery. Virtually all crystals now are gentleman-designed in laboratories.
crystal The recently crystallized quartz grains are characterized by elongate crystals oriented oblique on the shear band margins, defining an average grain-condition foliation. 来自 Cambridge English Corpus We say the chain topology inside the higher w location functions since the proverbial ' scratch-on-theglass ' wanted inside the organic and natural chemistry laboratory to create crystals. 来自 Cambridge English Corpus The age scatter among the individual crystals might mirror incorporation of xenocrysts from earlier magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene sorts neutral to pale brown, subhedral to anhedral crystals, occasionally made up of inclusions of plagioclase microlaths and opaque phases.
All crystal ball crystal crystal clear copyright liquid crystal crystal lattice crystal framework liquid crystal Display screen See all meanings Idioms and phrases crystal apparent idiom
Crystallography will be the examine of crystals, and it promotions with every little thing from ideal geometric designs to seemingly random conglomerations of particles and minerals.
The framework from the sodium atoms by itself, or perhaps the chlorine atoms on your more info own, is fcc and defines the unit mobile. The sodium chloride construction thus is built up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) relies around the bcc composition; every other atom is cesium or chlorine. In this instance, the device cell is often a cube. The third significant structure for AB
对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。