Silicon oxide may refer to either of the following:
*
Silicon dioxide
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , commonly found in nature as quartz. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundan ...
or quartz, SiO
2, very well characterized
*
Silicon monoxide, SiO, not very well characterized
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