The Basic Principles Of Crystal

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。

无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度,越纯、越透明越好。干净的、无瑕疵的、杂质少的价值就高。无色的水晶如果很脏,就没有利用价值。

对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正,浓度较高,内部无瑕为好。种类上紫晶最贵,其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。

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�?”

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。

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解理:无解理。所谓解理是指矿物被打击时,沿一定方向有规则地裂开形成光滑平面的性质。根据解理的程度可以分为五类:极完全解理、完全解理、中等解理、不完全解理和无解理,水晶属于无解理。

11I carefully opened the offer and located a crystal bell within.我小心地打开包裹,发现里面有一个水晶钟。

第三种是“皮景”,因某些其他的矿物与水晶体共生,或由于其他的物质侵蚀而依附于水晶表面,或者是水晶受自然环境的影响,在水晶表面出现蚀象,形成了一些景象或图案,这种景观存在于水晶表面。

Crystals with obvious flat faces are called euhedral crystals, though those lacking outlined faces are called anhedral crystals. Crystals consisting of requested arrays of atoms that aren't generally periodic are called quasicrystals.

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The arrangement of the atom’s electrons decides its chemical properties. The Houses of solids are often predictable from the properties in their constituent atoms and molecules, and the various shell buildings of atoms are hence chargeable for the variety of solids.

This Evaluate chronicles in excess of two decades of investigate into developing a genetic code for crystal engineering. Instead of directing Organic processes, this code takes advantage of synthetic types click here of DNA to programme the assembly of nanoparticles and microparticles into 1D, 2nd and 3D crystalline architectures, in which nearly each and every aspect of the resultant constructions might be systematically managed. Inside of this conceptual framework, the structural and purposeful advances are described in order to define the existing standard of sophistication also to forecast long run directions on the platform.

⑥白色的包裹体有蚀变的绿泥石、云母、愈合裂隙、水晶、方解石、透闪石等。

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