5 Essential Elements For Crystal
5 Essential Elements For Crystal
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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。
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。
A simple thought in crystal structures is definitely the device cell. It is the smallest unit of volume that allows similar cells for being stacked jointly to fill all Place. By repeating the pattern in the device mobile repeatedly in all Instructions, your entire crystal lattice may be manufactured. A dice is The best illustration of a device cell. Two other illustrations are shown in Determine 1. The main is definitely the device mobile for just a encounter-centred cubic lattice, and the next is to get a body-centred cubic lattice. These structures are explained in the next paragraphs.
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�?”
Additionally, there are several supplies that resemble crystals but are literally polycrystals. Polycrystals variety when microscopic crystals fuse with each other to form a sound. These elements do not encompass purchased lattices.
发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。
30Three times went past, and I used to be amazed to check out it all over again: each of the openings were being sewed up by skinny and white thread and so they seemed similar to the ice crystal on Wintertime's branches inside the north.
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。
crystal The recently crystallized quartz grains are characterized by elongate crystals oriented oblique for the shear band margins, defining an average grain-condition foliation. 来自 Cambridge English Corpus We say the chain topology inside the high w location functions as being the proverbial ' scratch-on-theglass ' wanted while in the natural chemistry laboratory to create crystals. 来自 Cambridge English Corpus The age scatter among the person crystals may possibly replicate incorporation of xenocrysts from earlier magmatic pulses or protoliths. 来自 read more Cambridge English Corpus The clinopyroxene sorts neutral to pale brown, subhedral to anhedral crystals, from time to time made up of inclusions of plagioclase microlaths and opaque phases.
天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值，但是包裹体水晶观赏石经常需要适当打磨抛光，这样更方便观赏水晶内部的包裹体。
Orthorhombic: They are rhombic prisms and dipyramids that resemble tetragons but with no square cross-sections.
水玉：中国最古老的称法叫水玉，意谓似水之玉，又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道：�?水玉簪头白角巾，瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》：�?又东三百里，日堂庭之�?…�?多水�?”；�?丹山出焉，东南流注于洛水，其中多水玉 ”；�?逐水出焉，北流注于渭，其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉，古人是看�?�?其莹如水，其坚如�?�?的质地。
Tetragonal �?Characterized by 3 mutually perpendicular axes, two of which might be equivalent in duration, though the third is lengthier or shorter and perpendicular to the opposite two.