MARIETTA, PA. Stock 14862. Detailed Description. 1995 PETERBILT 357 TRI AXLE STEEL DUMP, 0743083 ON ODO, 18260 GVW, CAT, ENGINE BRAKE, DIESEL, DUAL EXHAUST, MANUAL, POWER STEERING, AIR SUSPENSION, 264 WHEEL BASE, AIR BRAKES, 11R24.5 ON ALUMINUM WHEELS, A/C, HEATED MIRROR, VISOR.
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. Orthosilicate is the anion SiO4â.
In framework silicates, each silicon shares all four of its oxygen with adjacent silicon resulting in a three dimensional framework of strong covalent bonds. The simplest framework silicates is quartz which contains only silicon and oxygen.The feldspars are framework aluminum silicates. Since aluminum occupies the middle of some of the tetrahedra, other metals, namely K, Na and Ca are needed to balance the charge of the crystal.hus the relative amounts of oxygen, silicon and aluminum in the mineral increase, as the amount of iron, magnesium and calcium decrease. Silicate minerals rich in iron, magnesium or calcium are called mafic.