Feldspar and Nepheline Syentite: Applications in the Ceramics and Glass Industries
Mian K. Habib
Feldspar and nepheline syenite are among the most common industrial raw materials used in ceramics, glass and other industrial applications. Feldspar is a widespread mineral found in many igneous and metamorphic rocks; however, sustainable and economically viable deposits of feldspar are somewhat scarce. Commercial feldspar is generally found with quartz and other accessory minerals in coarse-grained granite (pegmatite) rocks. Extraction of feldspar requires crushing, grinding and separation of feldspar from other associated minerals. This report is particularly directed to those working in the ceramics, glass or other related industries. This text not only provides basic information about the mineralogy of feldspar and nepheline syenite, but also describes their physical and chemical characteristics and their uses in ceramics and glass. It provides a logical procedure for correlating the chemical composition of feldspathic materials with their mineral composition. A simple and systematic method for converting chemical analysis into mineralogical composition is described to help determine the chemical composition of various ceramics and glass batch mixes.
Habib, M.K., 2004, Feldspar and nepheline syentite: Applications in the ceramics and glass industries: Saudi Geological Survey Open-File Report SGS-OF-2004-1, 17 p., 10 figs., 13 tables, 3 apps.