@CONCACAF#CONCACAF - Friday, Feb 02, 2018 #CONCACAF #CCC2018 continues today with Real Hope FA v AtlÃ©tico Pantoja & W Connection FC v Arnett Gardens! Tune inâ¦
Building Blocks of The Earthâs Crust. Silicates are the most widespread of the minerals. They are made up of oxygen and silicon the number one and number two most abundant elements in the earth's crust. By themselves they make up over 90% of the weight of the earthâs crust. Most rocks are composed mainly of this class of minerals. There are two forms of silicate when looking at their chemistry:
It is estimated to be the ninth most abundant element in the universe. In the form of sulfides, sulfates, and elemental sulfur, the element constitutes about 0.03 percent of the Earth's crust. After oxygen and silicon, it is the most abundant constituent of minerals. Occurrence, properties, and uses.