Rings of silica tetrahedra

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• Silicon dioxide — Silica redirects here. For other uses, see Silica (disambiguation). Silicon dioxide …   Wikipedia

• Julgoldite — Infobox mineral name = Julgoldite category = Silicate mineral boxwidth = boxbgcolor = imagesize = caption = formula = (Ca,Mn)2(Fe2+,Fe3+,Mg)(Fe3+,Al)2(SiO4)(Si2O7)(OH)2(H2O) molweight = color = Black to greenish olive habit = blades or prisms.… …   Wikipedia

• Silicate — For the artificial intelligence androids of the 1990s science fiction series , see Silicate (AI) A silicate is a compound containing an anion in which one or more central silicon atoms are surrounded by electronegative ligands. This definition is …   Wikipedia

• Silicate minerals — The silicate minerals make up the largest and most important class of rock forming minerals, constituting approximately 90 percent of the crust of the Earth. They are classified based on the structure of their silicate group. Silicate minerals… …   Wikipedia

• Crystal structure — In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice… …   Wikipedia

• Sodium aluminate — Other names Sodium aluminium oxide, Sodium metaaluminate Aluminate, (AlO21 ), sodium Identifiers CAS number …   Wikipedia

• Coesite — Atomic structure of coesite Coesite[p] is a form (polymorph) of silicon dioxide SiO2 that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (700 °C or 1,300 °F), are applied to quartz. Coesite was… …   Wikipedia