Not all crystals are Similarly crystalline. There are frequently impurities, as well as the ionic & covalent between molecules can build vastly distinctive buildings from precisely the same content. A terrific illustration of this are diamonds and graphene.

杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。

10This could be the silicon chip—a bit chip of silicon crystal.这是硅芯片——一个硅晶体的小芯片。

If you need to see how crystals are formed, you can do some challenge with your pretty have kitchen and find out the development in the crystals occur with the personal eyes . This may be performed by putting a little volume of table salt into some frequent tap h2o, hold out 24 several hours, and you'll see great cubed formations. This happens as the drinking water is evaporating, which brings about the atoms which make up the salt (the mineral) plus the water to come back closer alongside one another.

. These four structures comprise the vast majority of binary crystals with equivalent numbers of cations and anions.

Lattices may have a person lattice position for every cell or more than one, yielding a total of 14 Bravais crystal lattice varieties. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the a few-dimensional array created by a set of discrete points.

Crystals look distinctive from many other rocks and minerals, but �?barring a handful of Exclusive circumstances �?nearly all minerals hide a crystalline framework underneath the surface.

11I carefully opened the package deal and located a crystal bell inside.我小心地打开包裹，发现里面有一个水晶钟。

One of the binary crystals, the simplest constructions to visualize are People with equal quantities of The 2 kinds of atoms. The composition of sodium chloride relies over a cube. To assemble the lattice, the sodium and chlorine atoms are put on alternate corners of a cube, as well as composition here is recurring (Figure 3B).

颜色：无色，浅至深的紫色，浅黄、中至深黄色，浅至深褐、棕色，绿至黄绿色，浅至中粉红。

say cheese a thing that somebody who is having a photograph of you tells you to convey so that the mouth tends to make the shape of a smile

Molecular Crystals: Overall molecules are bonded to one another in an organized method. A superb instance is really a sugar crystal, which is made up of sucrose molecules.

《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”

Tetragonal �?Characterized by 3 mutually perpendicular axes, two of which can be equivalent in size, even though the 3rd is lengthier or shorter and perpendicular to the other two.