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	Nepheline - LoveToKnow 1911 (Site not responding. Last check: 2007-10-04)
		NEPHELINE, a rock-forming mineral consisting of sodium, potassium and aluminium silicate, Na 6 K2A1 8 Si 9 0 34 Its crystals belong to the hexagonal system, and usually have the form of a short six-sided prism terminated by the basal plane.
		An important determinative character of nepheline is the ease with which it is decomposed by hydrochloric acid, with separation of gelatinous silica (which may be readily stained by colouring matters) and cubes of salt.
		Two varieties of nepheline are distinguished, differing in their external appearance and in their mode of occurrence, being analogous in these respects to sanidine or glassy orthoclase and common orthoclase respectively.
	www.1911encyclopedia.org /N/NE/NEPHELINE.htm (583 words)

	Nepheline Syenite - LoveToKnow 1911
		From ordinary syenites they are distinguished not only by the presence of nepheline but also by the occurrence of many other minerals rich in alkalis or in rare earths.
		Nepheline is very abundant and there is also cancrinite, sodalite, scapolite, calcite, biotite and hornblende.
		Jacupirangite (from Jacupiranga in Brazil) is a flish rock composed of titaniferous augite, magnetite, ilmenite, perofskite and nepheline, with secondary biotite.
	www.1911encyclopedia.org /N/NE/NEPHELINE_SYENITE.htm (1123 words)

	Ceramic heat insulating layer and process for forming same - Patent 5962152 (Site not responding. Last check: 2007-10-04)
		Nepheline minerals, however, cannot be practically used because, when preparing a slurry from a nepheline mineral powder, alkaline metal ions (typically, Na.sup.+) of the nepheline mineral cause rapid progress of both agglutination of the powder particles and reaction of a binder, and therefore, controlled preparation of slurry cannot actually be realized on commercial scale.
		According to the present invention, nepheline mineral particles were coated with a linear siloxane polymer and mixed with a binder to form a slurry, which was then used to form a ceramic heat insulating layer on a bonding layer formed on a base material in the same manner as in Example 1.
		The nepheline mineral particles shown by a large blank circle are coated with the linear siloxane polymer shown by a hatched case surrounding the large blank circle.
	www.freepatentsonline.com /5962152.html (6376 words)

	Nepheline Syenite
		Much of Arkansas' nepheline syenites have high strength and weather-resistant properties and are crushed for use as roofing granules, road materials, riprap, and asphalt and concrete aggregate.
		Nepheline syenite and its associated igneous rocks are exposed in 4 areas of the state: south-central Pulaski County between Little Rock and Sweet Home, Saline County in the vicinity of Bauxite, Garland County at Potash Sulphur Springs, and Hot Spring County at Magnet Cove.
		Nepheline syenite is quarried at Granite Mountain in Pulaski County by several companies.
	www.state.ar.us /agc/nephelin.htm (473 words)

	Awards and Recognition: Feldspar and Nepheline Syenite: Fillers With a Purpose
		Nepheline syenite is a rock composed of sodium and potassium feldspars and nepheline.
		The balance of the feldspar and nepheline syenite is used as fillers in coatings, plastic and rubber.
		Milled feldspars and nepheline syenite are composed of angular nodular particles, as shown in Figure 2.
	www.rtvanderbilt.com /awards_3.htm (1087 words)

	Nepheline
		Nepheline is a rock-forming mineral occurring mainly in plutonic and volcanic rocks.
		The greasy luster distinguishes nepheline from cryolite and feldspars.
		Although uncommon in North America, nepheline occurs as large grains in pegmatites in Hastings Co., Ontario, and as crude crystals in nepheline syenites at Litch-field, Kennebec Co., Maine.
	www.und.nodak.edu /instruct/mineral/geol318/webpage/robinson (396 words)

	Nepheline printout of a broadband, online video tour business presentation
		Nepheline Syenite is a rare igneous rock that, although resembling medium-grained granite in texture, consists principally of nepheline and alkali feldspars.
		Nepheline syenite is a unique and desirable replacement material for manufactured soda ash in the manufacture of ceramics and glass allowing for a thinner, stronger, lighter weight bottle.
		Nepheline in the manufacture of insulation materials such as roofing granules with an R factor and rock wool insulation, and in foam carpet backing.
	www.nepheline.com /nepheline-pf.html (2063 words)

	NEPHELINE (Sodium Potassium Aluminum Silicate)
		In nepheline syenite potassium feldspars or K-spars are the predominant feldspar.
		Nepheline is a member of the feldspathoid group of minerals.
		Nepheline is derived from the greek word for cloud in allusion to its cloudy or translucent crystals and masses.
	www.galleries.com /minerals/silicate/nephelin/nephelin.htm (533 words)

	nepheline.htm (Site not responding. Last check: 2007-10-04)
		Description: Nepheline occurs as a grayish to palely colored vitreous massive mineral in low-silica syenites, phonolites and metamorphic rocks derived from them.
		MARATHON COUNTY: Nepheline is a major constituent of the nepheline syenite exposed in the outer rim of the Stettin Pluton west of Wausau.
		In pegmatitic phases the nepheline grains may be as much as 30 cm.
	www.uwrf.edu /~wc01/nepheline.htm (148 words)

	Thaigem.com \| Info Center \| Gemstone Discovery \| Villaumite
		Nepheline - Syenite is a medium to coarse-grained, light- to medium-gray, igneous rock that is composed predominantly of a silicate mineral called orthoclase (KAlSi3O8) and has a granite-like appearance.
		The type of Nepheline - Syenite in which the xenoliths occur is generally fine-grained, dense, dark gray to brownish gray in color, significantly different in appearance and texture from most Nepheline - Syenite found.
		Villiaumite is composed of approximately 54.75% Sodium and 45.25% Fluoride (NaF, Sodium Fluorine) with anhedral to subhedral crystal structure.
	www.thaigem.com /dis_villaumite.asp (280 words)

	CVO Website - Syenite (Site not responding. Last check: 2007-10-04)
		Nepheline syenite is a medium to coarse-grained, light- to medium-gray, igneous rock that is composed predominantly of a silicate mineral called orthoclase and has a granite-like appearance.
		Nepheline syenite is a light-colored, quartz-deficient feldspathic rock made up of mostly soda and potash feldspars and nepheline.
		In glass and ceramics, nepheline syenite, like feldspar, provides alkalis, which, as a flux, lower the melting temperature of a glass or ceramic mixture, prompting faster melting and fuel savings.
	vulcan.wr.usgs.gov /LivingWith/VolcanicPast/Notes/syenite.html (119 words)

	THERMAL EXPANSION OF NEPHELINE - KALSILITE CRYSTALLINE SOLUTIONS (Site not responding. Last check: 2007-10-04)
		The four most sodium-rich nephelines expand at an equivalent rate with respect to temperature, regardless of K:Na ratio.
		Three nepheline specimens having higher potassium contents, in which the smaller of the two alkali crystallographic sites is in part occupied by potassium, expand at a slightly greater rate than the more sodic members of the series, as does the tetrakalsilite member of the series.
		This difference in behavior is related to the structures of nepheline - kalsilite minerals, which are stuffed derivatives of tridymite in which large channel cations play a different role than is the case for alkali feldspars.
	gsa.confex.com /gsa/2002AM/finalprogram/abstract_43210.htm (452 words)

	Western Miner.Com Database
		Nepheline may be used in industrial pollution control, in the manufacture of insulation materials such as roofing granules with an ‘R’ factor, and in foam carpet backing.
		Nepheline is a unique and desirable replacement material for manufactured soda ash in the manufacture of ceramics and glass —allowing for a thinner, stronger, lighter weight bottle.
		As nepheline syenite has a lower fusing point the energy cost is less.
	www.westernminer.com /claims/table/table.html (510 words)

	Litchfieldite - Wikipedia, the free encyclopedia
		It is a variety of nepheline syenite and is composed of two near pure phases of feldspar, albite and microcline, with predominance of the first one, plus nepheline, sodalite, cancrinite and calcite.
		3 Occurrences of nepheline syenite gneisses in Brazil
		Alkaline pegmatites: albite, nepheline, pyroxene, magnetite, zircon, (pyrochlore), (monazite), (allanite), (corundum).
	en.wikipedia.org /wiki/Litchfieldite (746 words)

	RIA Mines Inc. - Nepheline Syenite Development (Site not responding. Last check: 2007-10-04)
		Nepheline Syenite is not readily available in the United States.
		The U.S. Forest Service is already using one quarry to mine nepheline syenite needed for the gravel for the roads on Table Mt. and other places in the Siuislaw National Forest.
		The other near future possibilities of the use of nepheline syenite as a polymer resin could create a whole new industry in the United States and the world.
	www.riamines.com (708 words)

	The World Market for Felspar, Leucite Nepheline, and Nepheline Syenite: A 2004
		I have developed a methodology, based on macroeconomic and trade models, to estimate the market for felspar, leucite nepheline, and nepheline syenite for those countries serving the world market via exports or supplying from various countries via imports.
		Chapter 4 does the same, but for imports of felspar, leucite nepheline, and nepheline syenite for all countries in the world.
		Combined, Chapters 3 and 4 present the complete picture for imports and exports of felspar, leucite nepheline, and nepheline syenite to and from all major countries in the world.
	www.mindbranch.com /products/R307-4957.html (684 words)

	Nepheline syenite ore
		And, as the light to medium gray (with a blue tint) granite-like rock takes a good polish, displaying a soft cloud-like effect, nepheline syenite material is a desirable dimension stone for building facing, memorials, and floor tiles.
		Recently we have had a number of researchers requesting samples of our nepheline syenite ore for their projects including a researcher from the University of Toronto, researching nepheline syenite in the steel making process.
		We are being told by many of these researchers that Nepheline Syenite may be the next "miracle industrial mineral" of this century.
	www.nephelinesyenite.com /nepheline-material.html (430 words)

	THE THERMAL EXPANSION OF ULTRA-SILICIC NEPHELINE — KALSILITE CRYSTALLINE SOLUTIONS
		Interestingly, though, elevated excess Si decreases the coefficient of thermal expansion for nepheline while increasing the same for kalsilite.
		When plotted against molar excess Si (or mole fraction vacancies in the alkali site), the coefficients of thermal expansion for nepheline and kalsilite converge toward one another as Si increases, apparently approaching the thermal expansion coefficient for hexagonal tridymite (derived from the high-temperature X-ray data of de Dombal and Carpenter, European Journal of Mineralogy, 1993).
		The contrasting expansion behavior of nepheline and kalsilite relative to excess Si must be related to differences in the details of their structures, in particular alkali-site configuration and behavior, as well as the structural location of the excess Si and vacancies.
	gsa.confex.com /gsa/2004AM/finalprogram/abstract_78015.htm (422 words)

	The Deposit of Nepheline Syenite - Table Mountain, Oregon
		There are numerous natural exposures, and man made exposures in excess of 15 feet that show the material nepheline syenite in place.
		An adjustment in the total was made to compensate for the fact that a portion of the deposit is on a section (36) set aside as State of Oregon School Lands, and as such is not open to mineral entry.
		Using this higher number the measured quantity would be closer to 35 million tons, and the indicated quantity would be in the 700 million ton range.
	theprospector.com /html/the_deposit.html (396 words)

	Bootstrap a Nepheline Syenite mine
		This would require a sufficient stockpile to meet customers demands as no architect is going to specify polished "Cloudstone" for a new building, without seeing an inventory sufficient to complete the construction.
		No purchasing agent is going to give up his contract with the dominant supplier (from Canada) without being assured of a continuing supply of his grade of bagged nepheline.
		The Table Mountain Nepheline Syenite claims are being offered for outright sale for $5 million dollars US (a penny per ton) with a continuing 1% GS royalty
	www.diversifiedinvestments.net /NSclaimslease.html (285 words)

	Nepheline Syenite Business Proposal Presentation (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-04)
		Also surprising is the beauty of this ore when cut and polished for dimensional building stone.
		The owner has outlined a lease/purchase offer that would allow for bootstrap development by a businessman willing to devote time, money, and effort to making this property work
		This site contains a virtual video tour of the nepheline syenite prospect that requires a Flash reader for your browser.
	www.nepheline.com.cob-web.org:8888 (204 words)

	Nepheline Syenite: industrial mineral with many uses.
		With reports from a milling operation in Nevada of the economical "dial the specs" milling process of the Table Mountain nepheline syenite ore to fill most any industrial requirement, these orders could quickly be filled, once in production.
		Building stone with the beauty and high "R" value that nepheline syenite possesses has caused architects to go wild for it, once seen.
		The owner of this Nepheline Syenite property has outlined a purchase offer.
	www.nephelinesyenite.com (252 words)

	Nepheline Mineral Data (via CobWeb/3.1 planetlab2.isi.jhu.edu) (Site not responding. Last check: 2007-10-04)
		From the Greek nephele, "cloud," because it becomes clouded when put in strong acid.
		Warning: this large pop-up is very compute intensive and may not work well with some computers.
		Buerger M J, Klein G E, Hamburger G E, American Mineralogist, 32 (1947) p.197-197, The structure of nepheline
	www.webmineral.com.cob-web.org:8888 /data/Nepheline.shtml (260 words)

	RockWare Support Forum -> [OLD] Diagramming Nepheline
		One other question is what does the Act2 diagram command do?
		For example, what is the difference (or why is there a difference) between âdiagram Nepheline on....â?
		In the above example, the program considers all species and minerals that can be made up of Nepheline +/- Al(OH)4- +/- SiO2(aq) +/- H2O +/- H+.
	www.rockware.com /forum/index.php?showtopic=431 (334 words)

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