The best Side of Crystal
The best Side of Crystal
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Calcite crystals are sometimes Utilized in optical devices, as well as the graphite in pencil lead are sheets of crystals that effectively crack apart layer by layer to put in writing. Silica can kind silicate crystals which happen to be The premise for quartz, mica, olivine, and all kinds of other crystals and minerals.
Bismuth (Bi) seems to be a steel, but the quantity of electrons available for electrical conduction is analogous to that of semiconductors. In reality, bismuth known as a semimetal. Molecular solids usually are crystals formed from molecules or polymers. They are often insulating, semiconducting, or metallic, depending on the style of molecules inside the crystal. New molecules are continually being synthesized, and lots of are created into crystals. The quantity of unique crystals is enormous.
景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。
Incorporate to phrase listing Add to phrase checklist C2 [ U ] transparent glass of very good quality, normally with its floor cut into fragile patterns
. These four buildings comprise the vast majority of binary crystals with equivalent quantities of cations and anions.
Lattices could have a single lattice stage for each mobile or more than one, yielding a total of 14 Bravais crystal lattice types. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the 3-dimensional array created by a set of discrete factors.
30Three days went earlier, and I was amazed to see it yet again: each of the openings ended up sewed up by thin and white thread plus they looked just like the ice crystal on Wintertime's branches from the north.
26Some of the finest drinking glasses are made from direct crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
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：
The definition of a good appears noticeable; a reliable is usually regarded as staying tricky and company. On inspection, however, the definition will become much less easy. A dice more info of butter, such as, is hard immediately after currently being saved inside a refrigerator and it is Plainly a stable. Soon after remaining to the kitchen area counter for each day, the same cube gets to be fairly soft, and it really is unclear When the butter must nonetheless be regarded as a good.
. The 2nd layer is shaded inside the figure. It has exactly the same plane-triangular framework; the atoms sit from the holes formed by the initial layer. The initial layer has two equivalent sets of holes, but the atoms of the 2nd layer can occupy just one established. The third layer, labeled C
There are actually other minerals and molecules that will type these crystal lattices. Snowflakes really are a typical illustration of a approximately symmetric and geometrically patterned structure from ice crystals, and gemstones of all kinds are usually crystals.
水玉：中国最古老的称法叫水玉，意谓似水之玉，又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道：�?水玉簪头白角巾，瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》：�?又东三百里，日堂庭之�?…�?多水�?”；�?丹山出焉，东南流注于洛水，其中多水玉 ”；�?逐水出焉，北流注于渭，其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉，古人是看�?�?其莹如水，其坚如�?�?的质地。
矿物成分：针铁矿、赤铁矿、金红石、磁铁矿、电气石、石榴石、云母、绿泥石等形成了包裹体水晶，如发晶、钛晶、绿幽灵等，发晶中则含有肉眼可见的似头发状的针状矿物的包裹体形成。含锰和铁者称紫水晶；含铁�?；呈金黄色或柠檬�?)称黄水晶；含锰和钛呈玫瑰色者称蔷薇石英，即粉水晶；烟色者称烟水晶；褐色者称茶晶；黑色透明者称为墨晶。