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Crystal Award Trophy

Crystal is a colorless transparent large quartz crystal mineral. Its main chemical composition is silicon dioxide, which is a kind of material "the same as the common sand". When silica crystal is perfect, it is crystal. Silica gel is agate after dewatering. The water-bearing colloids...

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Crystal is a colorless transparent large quartz crystal mineral. Its main chemical composition is silicon dioxide, which is a kind of material "the same as the common sand".


When silica crystal is perfect, it is crystal. Silica gel is agate after dewatering. The water-bearing colloids of silica become opal after solidification. When the silica grains are less than a few microns, they form chalcedony, flint and secondary quartzite. The formula is SiO2.


Pure colorless transparent crystal is a variation of quartz. The chemical composition contains Si - 46.7%, O - 53.3%. A variety of colors due to the presence of different mixtures or mechanical blends. Purple and green are caused by iron (Fe2+) ions, purple can also be caused by titanium (Ti4+), other colors by the color center.


The crystals contain inclusions of sand, fragmentary pyrite, hematite, rutile, magnetite, garnet, chlorite, etc. Hair crystals are formed by inclusions containing hair - like needle-like minerals visible to the naked eye. Those containing manganese and iron are called amethyst. Those containing iron (golden yellow or citric) are called topaz. Rose-colored people with manganese and titanium are called rose-colored quartz. The person who smoke color calls smoke crystal; The brown ones are called tea crystals. The black transparent person is called the ink crystal; A light green person is called a stone medulla.


Another characteristic of the crystal is that it is alkali resistant to acids (except hydrofluoric acid), which is determined by the properties of silica. Stones such as agate, when heated, rubbed, blown, or struck, often give off a special odor reminiscent of garlic, horse meat, turnips, turnips, and pine.

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