Not known Details About Crystal
Not known Details About Crystal
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Calcite crystals are sometimes Employed in optical equipment, and perhaps the graphite in pencil lead are sheets of crystals that basically crack aside layer by layer to jot down. Silica can variety silicate crystals which might be The idea for quartz, mica, olivine, and all kinds of other crystals and minerals.
⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。
看做工：水晶制品加工过程分为两种，即磨工和雕工。如水晶项链、手链、耳环等属于研磨品；观音像、内画鼻烟壶等属于雕刻品。
Fig. seven: A template-directed technique can Management The location of building blocks over a floor during the formation of elaborate buildings.
断口：贝壳状。断口也叫破口。它是指矿物被打击后产生不规则的破裂，破裂裂面凹凸不平称为断口。根据断口的形状可分为贝壳状和锯齿状。
, has the identical composition, but There are 2 options for selecting the holes the atoms will occupy. The 3rd layer is usually placed above the atoms of the first layer, creating an alternate layer sequence A
对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。
Ionic Crystals: Electrostatic forces variety ionic bonds. A vintage illustration is actually a halite or salt crystal.
Crystals are sometimes considered as a little something of huge beauty, they usually are generally employed with diamonds or other stones to produce items of jewellery. Virtually all crystals now are gentleman-manufactured in laboratories.
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15The trick to an excellent thermoelectric materials can be a crystal composition during which electrons can stream freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
水晶形成后由于外力作用或某种人为原因使水晶产生大的裂隙或裂纹，这种裂纹有大有小，对水晶的影响也有大小之分。
The composition from the sodium atoms on your own, or maybe the chlorine atoms by itself, is fcc and defines the unit cell. The sodium chloride structure thus is produced up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) is predicated about the website bcc structure; just about every other atom is cesium or chlorine. In cases like this, the unit cell is actually a dice. The 3rd essential structure for AB
水晶观赏石是天然水晶中最具代表的作品，具有其他宝石都不具备的观赏性。不论是玉石翡翠还是都要经过雕琢后次能体现他的价值，而水晶观赏石只需要将表面进行抛光，即展现出晶体内所包裹的物质，直接欣赏原汁原味的水晶石。