feldspar


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feldspar

[feld′spär]
Etymology: Ger, feld, field, spath, spar
a crystalline mineral of aluminum silicate with potassium, sodium, barium, and calcium. It melts over a range of 593.5° C to 1093° C (1100° F to 2000° F) and is an important component of dental porcelain.

feldspar (feld´spär),

n a crystalline mineral of aluminum silicate with po-tassium, sodium, barium, or calcium– NaAlSi3O8 or KAlSi3O8. Feldspar melts over a range of 1,100°F to 2,000°F (593.5°C to 1093.5°C). An important constituent of dental porcelain.
feldspar, orthoclase ceramic,
n a clay found in large quantity in the solid crust of the earth. It acts as a filler and imparts body to the fused dental porcelain.
References in periodicals archive ?
Key events in the global feldspar industrial landscape, data on the annual prices for the last five years (divided by regions where applicable) and supplies, activities of the major marketers, production and consumption are covered within the study.
US) II-27Imerys SA (France) II-28The Feldspar Corp (US) II-28Incusa Industrias Del Cuarzo, S.
Potters can educate themselves about the raw materials in their clay body and glaze formulas and then have the tools to make an appropriate substitution 'when' and not 'if' a material has gone the way of Albany Slip, Barnard/Black Bird, Oxford feldspar, PBX fireclay, Ocmulgee, A-3 feldspar, Kingman feldspar, Avery kaolin, NYTAL HR 100 talc.
The report also indicates a wealth of information on feldspar producers and suppliers, covers feldspar production in the respective country, major feldspar producers, feldspar consumption in the country market, feldspar trade in the country, feldspar prices.
Future Analysis for Feldspar and Nepheline Syenite by
Current prices and characteristics of feldspar product of some producers (17 companies)
Table 10: World 11-Year Perspective for Feldspar and Nepheline
Large amounts of a mineral found in granite, known as feldspar, were found in an ancient Martian volcano.
Collector's Guide to the Feldspar Group packs in over a hundred color photos of feldspar minerals showing each species in its geological context, and explaining how they are formed and why they have unusually vivid colors.
This area is blessed with unlimited and heavy deposits of precious and semi-precious stones, precious and semi-precious metals, and industrial stones like Ruby, Gold, Topaz, Aquamarine, Tourmaline, Epidote, Paragasite, Zircon, Actinolite, Lead, Moonstone, Himalayan Quartz, Emerald, Marble, Granite, Feldspar, Mica, Calcite, Feldspar, Antimony, Graphite, Alum, Coal, Copper, Barite, China Clay etc".