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 lower density common to the minerals of this group is evidence of the openess of their structure. The sodalite group is a group within a group. It is composed of minerals with a similar isometric structure and related chemistry.It is named for its most common member, sodalite.he sodalite group is a group within a group. It is composed of minerals with a similar isometric structure and related chemistry. It is named for its most common member, sodalite.