A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an ordered pattern extending in all three spatial dimensions. In addition to their microscopic structure, large crystals are usually identifiable by their macroscopic geometrical shape, consisting of flat faces with specific, characteristic orientations.

The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word crystal is derived from the Ancient Greek word κρύσταλλος (krustallos), meaning both “ice” and “rock crystal”, from κρύος (kruos), "icy cold, frost".

Common crystals include snowflakes, diamonds, and table salt; however, most common inorganic solids are polycrystals. Crystals are often symmetrically intergrown to form crystal twins.

Read more about Crystal:  Crystal Structure (microscopic), Crystal Faces and Shapes, Polymorphism and Allotropy, Crystallization, Defects, Impurities, and Twinning, Chemical Bonds, Quasicrystals, Special Properties From Anisotropy, Crystallography, Gallery

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Edmund Goodman
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... County Schools serve the McKinley County portion of Crystal ... The portion of Crystal in San Juan County is served by Central Consolidated Schools ...

Famous quotes containing the word crystal:

    It is crystal clear to me that if Arabs put down a draft resolution blaming Israel for the recent earthquake in Iran it would probably have a majority, the U.S. would veto it and Britain and France would abstain.
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    But the thing that I saw in your face
    No power can disinherit:
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    Shatters the crystal spirit.
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    I waited alone, in the company of orchids, roses and violets who—like people waiting beside you, but to whom you are unknown—maintained a silence which their individuality of living things rendered more imposing and in their chilly manner received the heat from an incandescent coal fire, preciously placed behind a crystal glass, in a white marble tub where it dropped, from time to time, its dangerous rubies.
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