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Silicon is the eighth most common element in the universe by mass, but very rarely occurs as the pure element in the Earth's crust. It is most widely distributed in dusts, sands, planetoids, and planets as various forms of silicon dioxide (silica) or silicates.
Pure silicon cannot be found in nature but is found in a number of compounds. These compounds are usually oxides, and silicon oxides are found as sand and as silicate minerals â¦ . Silicon makes up about a quarter of the earth's crust, so there is plenty of it to go around.   Silicon is a nonmetallic element and very abundant in nature. Its atomic number is 14.