Wiktionary (0.00 / 0 votes) Rate this definition: module (Noun). A self-contained component of a system, often interchangeable, which has a well-defined interface to the other components. module (Noun). A standard unit of measure used for determining the proportions of a building. module (Noun).
A silicate is a compound containing an anionic silicon compound. The great majority of the silicates are oxides, but hexafluorosilicate ([SiF6]2â) and other anions are also included. 4 or its compounds. Related to orthosilicate are families of anions (and their compounds) with the formula [SiO2+n]2nâ.
Although chemically spoken silica is an oxide, in Angloamerican mineralogical literature quartz and all other silica modifications are usually classified as silicates (based on a classification scheme established by Dana). The reasoning behind calling quartz a silicate is that it is built up by a network of SiO 4 tetrahedra. Silicates are classified according to the way SiO 4 tetrahedra are integrated into the crystal structure and if and how the tetrahedra are linked to each other, and according to that quartz is called a tectosilicate (network silicate or framework silicate).