Crystal Secrets

Crystal Secrets

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Not all crystals are Similarly crystalline. There will often be impurities, along with the ionic & covalent involving molecules can produce vastly distinctive structures away from the exact same material. A great example of this are diamonds and graphene.

the stable condition of numerous uncomplicated substances, which have a daily shape and surfaces arranged in related patterns

Chemical Bonds The kinds of chemical bonds formed involving atoms or teams of atoms in crystals depend on their dimension and electronegativity. You will find four groups of crystals as grouped by their bonding:

Fig. 7: A template-directed method can Management the placement of developing blocks with a surface during the development of elaborate constructions.

Fig. four: Making blocks with diverse shapes and area chemistries direct the formation of distinctive crystal symmetries.

当二氧化硅结晶完美时就是水晶；结晶不完美的就是石英：二氧化硅胶化脱水后就是玛瑙；二氧化硅含水的胶体凝固后就成为蛋白石；二氧化硅晶粒小于几微米时，就组成玉髓、燧石、次生石英岩。

水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：

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。

13Nearly all pcs have a quartz-crystal clock to control their Procedure.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。

crystal The freshly crystallized quartz grains are characterized by elongate crystals oriented oblique into the shear band margins, defining a typical grain-form foliation. 来自 here Cambridge English Corpus We say the chain topology in the superior w location acts as being the proverbial ' scratch-on-theglass ' needed from the organic and natural chemistry laboratory to generate crystals. 来自 Cambridge English Corpus The age scatter among the the person crystals may replicate incorporation of xenocrysts from earlier magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene types neutral to pale brown, subhedral to anhedral crystals, once in a while that contains inclusions of plagioclase microlaths and opaque phases.

看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。

The arrangement of the atom’s electrons determines its chemical Houses. The properties of solids are often predictable from your properties in their constituent atoms and molecules, and the different shell buildings of atoms are consequently liable for the diversity of solids.

⑨、喷砂：立体感弱，较平整，无凹凸感，机器雕刻文字、图形等后进行效果处理。成本低制作快。

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。