5 Simple Statements About Crystal Explained
5 Simple Statements About Crystal Explained
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Calcite crystals are sometimes Employed in optical equipment, and perhaps the graphite in pencil direct are sheets of crystals that in essence crack aside layer by layer to jot down. Silica can kind silicate crystals which might be The premise for quartz, mica, olivine, and all kinds of other crystals and minerals.
⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。
Chemical Bonds The categories of chemical bonds fashioned amongst atoms or teams of atoms in crystals depend on their dimension and electronegativity. There are 4 categories of crystals as grouped by their bonding:
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水胆水晶，包括气态，液态，固态，有时候可以同时多态并存，无色居多，个别情况下可见红色，绿色，黄色，蓝色，黑色等。
These examples are from corpora and from resources on the net. Any viewpoints inside the illustrations don't signify the feeling from the Cambridge Dictionary editors or of Cambridge College Push or its licensors.
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：
损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。
水晶包裹体丰富多彩，从气体、液体到各种矿物质，甚至宝石，均可被包含于水晶内，各种包裹体所形成的景象更是变化万千。按照包裹体的内容，常把包裹体水晶分为一下八类：
crystal The recently crystallized quartz grains are characterised by elongate crystals oriented oblique to your shear band margins, defining an average grain-condition foliation. 来自 Cambridge English Corpus We are saying the chain topology within the large w location acts as the proverbial ' scratch-on-theglass ' wanted in the natural and organic chemistry laboratory to produce crystals. 来自 Cambridge English Corpus The age scatter amongst the individual crystals might mirror incorporation of xenocrysts from earlier magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene varieties neutral to pale brown, subhedral to anhedral crystals, often made up of inclusions of plagioclase microlaths and opaque phases.
The essential units of solids are either atoms or atoms that have merged into molecules. The electrons of an atom transfer in orbits that kind a shell composition throughout the nucleus. The shells are crammed in a scientific order, with Every single shell accommodating only a little variety of electrons. Distinct atoms have diverse figures of electrons, which might website be dispersed inside of a attribute electronic framework of stuffed and partly stuffed shells.
You will find other minerals and molecules that could kind these crystal lattices. Snowflakes absolutely are a typical example of a around symmetric and geometrically patterned construction from ice crystals, and gemstones of all varieties are generally crystals.
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。