A good is crystalline if it's got extensive-array buy. When the positions of an atom and its neighbours are regarded at 1 issue, the place of every atom is thought precisely throughout the crystal. Most liquids deficiency long-assortment order, Even though a lot of have shorter-array get. Short vary is described as the first- or 2nd-nearest neighbours of an atom. In several liquids the first-neighbour atoms are arranged in the same construction as during the corresponding reliable section.
23Sometimes, nevertheless, the crystal type of the silicate inclusions is noticed to resemble additional intently the internal composition of diamond than that of other silicate minerals.然而，有时观察到硅酸盐包裹体的晶体形态比其他硅酸盐矿物更接近金刚石的内部结构。
结晶的形状非常细小，需要用显微镜才能看得清楚，外观上看起来是平滑、块状。常见最多的是各式玛瑙
③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。
C2 [ U ] transparent glass of really high quality, normally with its surface Slash into sensitive patterns:
无色水晶与无色长石因折射率和密度十分接近故较难区分。主要方法是放大检查。长石有两组极完全解理，显微镜下可见两组解理相交而成的“娱蛤状”包裹体或细直的纹理，而水晶则无解理发育，仅有时可见断续不规则的裂理。
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。
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。
24I intend to make my that means crystal very clear.我想把我的意思解释得清清楚楚。《牛津词典》
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
16I opened the box and observed a bit of crystal snowflake plus a greeting card with "Pleased Birthday" during 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。
Molecular Crystals: Full molecules are bonded to one another within an structured manner. A very good instance is usually a sugar crystal, which includes sucrose molecules.
Crystals are categorised normally groups, like insulators, metals, semiconductors, and molecular solids. One crystal of the insulator is often clear and resembles a piece of glass. Metals are shiny Unless of course they have got rusted. Semiconductors are occasionally shiny and often clear but are never ever rusty. Lots of crystals is often labeled as one type of strong, while others have intermediate behaviour. Cadmium sulfide (CdS) is often geared up in pure variety and is a wonderful insulator; when impurities are added to cadmium sulfide, it will become a fascinating semiconductor.
SMART Vocabulary: connected terms and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral here nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See a lot more benefits » It's also possible to uncover relevant words, phrases, and synonyms during the subjects: