An Unbiased View of Crystal

An Unbiased View of Crystal

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水晶表面坑洼的地方，有的深，有的浅，这是水晶在成长过程中自然形成的，并非是人为造成的损伤。缺陷位置本来包有其他矿物晶体，由于包裹体和水晶结合部位的结合力不强，当表面抛光时，矿体脱落，留下空位。这种缺陷在绿幽灵、钛晶、金发晶上都比较常见。

Bismuth (Bi) seems for being a metal, but the quantity of electrons obtainable for electrical conduction is analogous to that of semiconductors. In truth, bismuth is called a semimetal. Molecular solids are generally crystals fashioned from molecules or polymers. They can be insulating, semiconducting, or metallic, depending upon the variety of molecules from the crystal. New molecules are continuously staying synthesized, and many are made into crystals. The volume of distinct crystals is gigantic.

Chemical Bonds The kinds of chemical bonds shaped between atoms or teams of atoms in crystals rely on their sizing and electronegativity. You will discover four classes of crystals as grouped by their bonding:

The requested inside construction of huge crystals, similar to the fluorite and quartz proven in this article, is mirrored in their geometric designs.

条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。

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水晶内部有多种矿物包裹体，形成的各种景观可以肉眼观测，这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石，因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性，具有极高欣赏和收藏价值。

市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。

Metallic Crystals: Metals often kind metallic crystals, in which many of the valence electrons are totally free to move throughout the lattice. Iron, for instance, can form different metallic crystals.

[ C/U ] clear glass of high quality, typically with its floor Reduce into designs that mirror mild

16I opened the box and noticed a bit of crystal snowflake as well as a greeting card with "Delighted Birthday" from the blank paper.我打开盒子并看见在白纸中有一片水晶雪花和一张写着“生日快乐”的贺卡。

You'll find only some distinctive device-mobile styles, so a variety of crystals share just one device-cell variety. A very important characteristic of the device cell is the volume of atoms it incorporates. The overall amount of atoms in the entire crystal would be the number in Just about every cell multiplied by the number of device cells. Copper and aluminum (Al) Every single have one particular atom for each unit cell, even though zinc (Zn) and sodium chloride have two. Most crystals have only a few atoms for each unit mobile, but get more info there are a few exceptions. Crystals of polymers, as an example, have Countless atoms in Just about every unit mobile.

⑦双色水晶：一种紫色和黄色共存一体的水晶，紫色、黄色之间界限较明显，分别占据晶块的一部分。

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