A nother way to study the solar system is to actually go there on a trip called a crewed mission. A space shuttle can bring astronauts and their tools into space to perform experiments, launch satellites, and make observations.
by far the largest chemical group This group of minerals contains SiO44- as the dominant polyanion. In these minerals the Si4+ cation is always surrounded by 4 oxygens in the form of a tetrahedron. Because Si and O are the most abundant elements in the Earth, this is the largest group of minerals and is divided into subgroups based on the degree of polymerization of the SiO4 tetrahedra. rock-forming minerals
The silicates are the largest, the most interesting and the most complicated class of minerals than any other minerals. Approximately 30% of all minerals are silicates and some geologists estimate that 90% of the Earth's crust is made up of silicates, SiO. Silicates is based on the basic chemical unit SiO.In the extreme case, the tetrahedra are arranged in a regular, orderly fashion forming a three-dimensional network.pproximately 30% of all minerals are silicates and some geologists estimate that 90% of the Earth's crust is made up of silicates, SiO. Silicates is based on the basic chemical unit SiO. In the extreme case, the tetrahedra are arranged in a regular, orderly fashion forming a three-dimensional network.