Calcite crystals will often be Employed in optical gear, and in many cases the graphite in pencil direct are sheets of crystals that basically break aside layer by layer to put in writing. Silica can variety silicate crystals which happen to be the basis for quartz, mica, olivine, and many other crystals and minerals.
①压电效�?在机械力(压力或拉�?作用下，水晶单晶体的两端会产生电荷，其电量相等但符号相反。在工业上，无色、无缺陷、不具双晶的水晶常被用来作压电石英片。
These advances include things like exotic buildings with programmable lattice symmetries and properly-outlined crystal patterns, responsive elements that leverage the intrinsic Qualities of nucleic acids to control buildings on demand from customers, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals that offer insights into light–matter interactions. Wanting ahead, we obstacle the Group to leverage the remarkable structural Handle afforded by crystal engineering with DNA to synthesize courses of useful products that push over and above what has become doable with The natural way happening crystalline materials or Individuals produced by additional common strategies.
水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”
. These 4 structures comprise the majority of the binary crystals with equal figures of cations more info and anions.
, has exactly the same framework, but There are 2 choices for choosing the holes that the atoms will occupy. The third layer is often placed around the atoms of the primary layer, producing an alternate layer sequence A
石英：《广雅》称水晶叫石英，色白如莹者又叫白。为附的异形字。司马相如《子虚赋》就�?�?雌黄�?�?之句。苏林解释：�?�?，白石英�?”。
To be a incredibly hot Option cools or perhaps a saturated Alternative evaporates, particles attract near more than enough for chemical bonds to variety. Crystals also can kind from deposition directly from the gas stage. Liquid crystals have particles oriented in an structured manner, like reliable crystals, yet are able to move.
Among the many binary crystals, the easiest structures to visualize are those with equal quantities of the two kinds of atoms. The composition of sodium chloride is based with a dice. To construct the lattice, the sodium and chlorine atoms are placed on alternate corners of the cube, plus the framework is repeated (Figure 3B).
看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
⑥、丝印：水晶表面附有不同的色料进行效果处理，颜色层面较厚，着力后方可脱落。
Crystals are not merely renowned for their Actual physical appearance, but diverse crystals of different materials and formations can result in an enormous number of takes advantage of and Bodily Homes.
玉石纹理如果能形成美丽的花纹、图案，其价格就高，如玛瑙内红白相间的色带有规律地排列，形成缠丝玛瑙时，碧玉中的不均匀颜色形成一种风景图案时，材料的价值将提高。当水晶内包裹体形成美丽的图案时，如幽灵水晶、风景水晶，或者针状包裹体呈束状排列时，其价值都高于普通的水晶。图案越美观、越有意境越好。
Intelligent Vocabulary: connected words and phrases and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See more effects » You can even locate linked text, phrases, and synonyms in the topics: