Silicate Mineral

                 Silica is an anionic or 2 elements which combine into one and form a negatively charged compound. Silica compounds have the chemical formula SiO, which consists of Silicon and Oxygen. Silica is the main constituent of the Earth's crust (Holmes, 1964). Almost 100% can be ascertained that the earth's crust is composed of silica minerals (up to a depth of 2900 Km from the earth's crust). Silicon is also number 2 abundant element on earth, here I give a picture of the most elemental sequence on earth.

From that graph it is very clear that the 2nd most silica on this earth.

Magma took the most important part in silica minerals, why? Almost all silica rocks are formed by magma or magmatism in general Continent plates and oceanic plates all contain magma, but continental plates give more contribution to the formation of silica, because oceanic plates turn into magma and then the magma comes out to the surface of the earth.

                                       

Because of the process of magmatism, it will certainly form minerals that are useful in everyday life. Silica is the largest constituent in the earth's plate so that it has more contamination. Silica-type minerals will give me the mineral image

Zircon rumus kimia ZrSiO₂ 

        

Amethyst Rumus Kimia Si_2­O­₃