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nepheline-feldspar glass-ceramic

nepheline syenite — Medium to coarse grained igneous rock, a member of the alkali syenite group, which consists largely of feldspar and nepheline. Nepheline syenite from Canada is used to replace feldspar in the manufacture of ceramic and glass products. * * * ▪… … Universalium
Porcelain — Fine China redirects here. For the band, see Fine China (band). This article is about the ceramic material. For other uses, see Porcelain (disambiguation). Chinese moon flask, 1723 35, Qing Dynasty … Wikipedia
Soft-paste porcelain — url= http://www.vam.ac.uk/images/image/38638 popup.html title= Porcelain plate work=Ceramics accessdate= 2007 12 06] Victoria and Albert Museum, London] Soft paste porcelain is a type of a ceramic material, but it lacks a more specific,… … Wikipedia
Industrial minerals — are geological materials which are mined for their commercial value, which are not fuel (fuel minerals or mineral fuels) and are not sources of metals (metallic minerals).They are used in their natural state or after beneficiation either as raw… … Wikipedia