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see feldsparfeldspar
or felspar
, an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these elements.
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, felspar
any of a group of hard rock-forming minerals consisting of aluminium silicates of potassium, sodium, calcium, or barium: the principal constituents of igneous rocks. The group includes orthoclase, microcline, and the plagioclase minerals
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
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Formula #1 Potash felspar 48 Spodumene 05 Whiting 14 Kaolin 14 Silica 19 100 Copper carbonate 02 CMC added Formula #2 Custer felspar 177.6 Flint 703 Calcium carbonate 51.8 Lithium felspar 18.5 Edgar Plastic kaolin 51.8 373.0 Copper carbonate 07.4 CMC added Formula #3 Spodumene 04.7 Lime 14.0 China clay 14.0 Quartz 18.7 Potash felspar 46.7 Copper carbonate 01.9 100.0 CMC added Glaze I Glaze 2 Albany slip 100 Barnard clay 95 Cobalt oxide .05 100 Glaze 3 Glaze 4 Ohio slip 90 Felspar, Custer 29.93 Gerstley borate 9 Whiting 20.00 Granular iron 1 Kaolin 09.95 100 Flint 09.32 Alumina hydrate 06.95 Zinc oxide 06.64 Zircopax 05.40 Gerstley borate 04.29 Rutile 02.27 Dolomite 02.09 Yellow ochre 02.09 Bentonite 02.04 100.00 CMC
Felspar has introduced TeamViews 2.5, the latest version of its intranet application suite.
Felspar, a provider of web-based infrastructure software for the telecomms and service industries, has launched its new business-to-business e-commerce billing system.
The red soil layer is clay loam to light clay in texture, with some field-observable quartz and felspar grains, but containing much less granular material than in the underlying soil horizons.
The limestone, which is primitive, has running through it in different directions, veins from one to three or four inches thick, composed of quartz, felspar, mica, and granular lime-stone: through which the oxide of Titanium is sparingly disseminated.
Custer Felspar 100 325 Silica 40 Pfizer Vicron Whiting 40 EPK 3.2 Magnesium Carbonate 5.6 Barium Carbonate 5.6 Zinc Oxide 5 Tin Oxide 2 Frit 3110 10 800 mesh Silicon Carbide 1 Copper Carbonate or Sulphate 1 Bentonite 4
He recites a litany of raw materials, pointing out examples: "lead basilicate frit and white felspar plus opacifier, give a background for colour response; zirconium gives a hard, clean white, tin a softer white; vanadium pentoxide gives a soft yellow; copper with an alkaline base gives Egyptian blue, or with an acidic base gives green.
The 69-year-old, who lives in nearby Felspar Road, added: ``It's about time something was done before somebody is knocked down by yobs racing cars down the lane.''
One good place to rent a classic beach cruiser ($5 an hour, $20 all day) is Bicycle Discovery, 742 Felspar St., Pacific Beach; 272-1274.
2d, Mica, selenite, potstone, hornblende, felspar, diamond spar, calc spar, heavy, spar are arranged together; and 3d, Of columnar heavy spar we have the following description: "Usually of bright white colour.
There are basically three essential ingredients in porcelain: kaolin (china clay), felspar (china stone) and silica.
Feibleman makes her own clays from her own stash of felspar. She uses up to five different white bodies with different firing temperatures, then sets the kiln at a range of temperatures to achieve a variety of results.