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	YourArt.com >> Encyclopedia >> nosean (Site not responding. Last check: 2007-11-05)
		Nosean, also known as Noselite, is a mineral of the feldspathoid group with formula:Na Al
		There is a solid solution between nosean and hauyne, which contains calcium.
		It was first described in 1815 from th Rhineland in Germany and named after the German mineralogist K. Nose (1753-1835).
	www.yourart.com /research/encyclopedia.cgi?subject=/nosean (146 words)

	ROCKS THAT PAUL WOULD HAVE LOVED: PETROLOGY OF HAUYNE PHONOLITES AND TRACHYTES FROM TAHITI (Site not responding. Last check: 2007-11-05)
		Nosean or haüyne phenocrysts, distinguished by Na/Ca ratios, are all sulfate-rich.
		Minor Cl enrichment at nosean or haüyne rims, and discontinuous, apparently epitaxial, annular rims of end-member sodalite surrounding these crystals, indicate exhaustion of magmatic sulfate during feldspathoid phenocryst crystallization and a cessation of hauyne or nosean crystallization.
		Abundance of sulfate in these rocks (in nosean and haüyne crystals), coupled with absence of any trace of sulfide minerals or any S in groundmass glass, indicates strong oxidation of magmatic sulfur and total depletion of sulfate in the melt during formation of feldspathoid phenocrysts.
	gsa.confex.com /gsa/2006SE/finalprogram/abstract_102376.htm (489 words)

	Nosean (Site not responding. Last check: 2007-11-05)
		Nosean, member of the rather rare mineral Sodalite group, is a at the...
		Nosean is found in extrusive a relative especially in alkali-rich, silica-poor igneous rocks, lavas,...
		Nosean, also known as Noselite, is a mineral of the feldspathoid group nosean and...
	noseanlnty.lunaonxe.info (586 words)

	Digital Library of Ceramic Microstructures
		Nosean, a Na-Al-Silicate Sulfate, is formed in the brick matrix as a result.
		Cathodoluminescence (CL) image of the same field of view as previous micrograph showing formation of red-CL needle-like Alumina crystals, blue-CL Nepheline, and Nosean matrix as a result of reaction between brick and alkali sulfates.
		Cathodoluminescence (CL) image of the same field of view as previous micrograph showing destruction of a Mullite aggregate enclosed in Nosean matrix, a sulfate containing Na-Al-silicate phase.
	www.udri.udayton.edu /dlcm/processsearch.asp?Material=484 (354 words)

	Nosean
		Nosean mineral data, information about Nosean, its properties and worldwide locations.
		is composed of the minerals sodalite, nosean, hauyne and lazurite: cubic aluminosilicate species with...
		dodecahedron, as illustrated by the nosean crystal on biotite in Figure 2...
	www.toprocks.net /MineralList/66/Nosean.asp (224 words)

	Elongated twins of sodalite and other isometric minerals Mineralogical Record - Find Articles
		The twins are elongated because of the predominance of dodecahedron faces in these species, and the special geometric properties of a dodecahedron twinned about a three-fold [111] axis.
		The sodalite family is composed of the minerals sodalite, nosean, hauyne and lazurite: cubic aluminosilicate species with the formula (Na,Ca)^sub 4^, Al^sub 6^Si^sub 6^O^sub 24^(SO^sub 4^,Cl,OH,S)^sub 1-2^*nH^sub 2^O. The members of The group are most frequently found in association with nepheline or leucite in nepheline syenites or phonolites and related undersaturated rocks.
		The predominant crystal form for all four species is the dodecahedron, as illustrated by the nosean crystal on biotite in Figure 2 and the beautiful, blue hauyne crystal in Figure 3.
	www.findarticles.com /p/articles/mi_qa3672/is_200003/ai_n8889182 (950 words)

	359
		(2) Heterogeneous sövite-syenites with eutectic intergrowth of calcite, sanidine and nosean are either layered or unlayered and examples for the crystallisation from a mixed silicate-carbonatite melt with up to 60 % carbonate.
		Compared to the phonolite phenocrysts, the composition of silicate minerals in the carbonatite-bearing rocks is different: plagioclase and sphene are absent while calcite, pyrochlore and orthite are present.
		Sanidine and nosean of the carbonatite-bearing rocks have higher Na contents than the phonolite phenocrysts; biotite, clinopyroxene, and magnetite have higher Mn contents, apatite has higher REE contents.
	www.the-conference.com /JConfAbs/1/359.html (769 words)

	Lapis Lazuli (Site not responding. Last check: 2007-11-05)
		Lapis Lazuli is part of the sodalite group and forms in the cubic crystal system.
		It is a composite rock composed of lazurite, sodalite, hauyne and nosean, all part of the sodalite group.
		The finest color for lapis is a deep blue, with no white spots (calcite) and a sprinkling of pyrite.
	www.jewelry-plus.com /Lapis.htm (318 words)

	Leucite - Wikipedia, the free encyclopedia
		The rounded shape of its crystals, their white or grey color, and rough cleavage, make the presence of leucite easily determinable in many of these rocks by simple inspection, especially when the crystals are large.
		Leucite is very often accompanied by nepheline, sodalite or nosean; other minerals which make their appearance with some frequency are melanite, garnet and melilite.
		Many of them also contain nepheline, sodalite, hauyne and nosean; the much rarer mineral melilite appears also in some examples.
	en.wikipedia.org /wiki/Leucite (1447 words)

	Wannenköpfe (Site not responding. Last check: 2007-11-05)
		Nosean, member of the Sodalite group, is a rather rare mineral at the Wannenköpfe.
		Usually Nosean crystals are long prismatic twins, the top of the crystal lools a bit like the top of a drill (bohrkron, boorkopje).
		ore more Nosean crystals together, this is quite unusual in the Eifel region.
	wannenkopfe.strahlen.org /nosean.html (108 words)

	Piergorite
		The most common mineral present has the characteristics of a light blue-grey Afghanite or another of the feldspar minerals.
		Other minerals identified are: Biotite mica; pyrite (in weathered, iron oxide stained, pyritohedrons); Smoky Quartz; Uranpyrochlore; Danburite (?), Nosean; and Hydroxylapatite (approximately 1.5 cm away from the Piergorite).
		To the left of these is a crystal of Nosean.
	www.uraniumminerals.com /UTh/Piergorite.htm (1017 words)

	Quartz 'N' All - High Quality Crystals, Minerals and Fossils Sodalite Page.
		These include nosean or noselite, hauyne, lazurite and lapis lazuli.
		For an explanation of, and to learn about the geological terms used, please look at the Fact File page.
		Also part of the Sodalite group are nosean or noselite (Na8AL6Si6O24(SO4)), and a calcium-containing type of nosean called hauyne.
	www.quartznall.co.uk /learnsodalite.htm (481 words)

	Nosean: Nosean mineral information and data.
		Van Peteghem, J.K. and Burley, B.J. (1963) Studies on solid solution between sodalite, nosean, and hauyne.
		Hassan, I. and Grundy, H.D. (1989) The structure of nosean, ideally Na8[Al6Si6O24]SO4·H2O.
		All other localities listed without reference should be considered as unproven until references can be found.
	www.mindat.org /min-2936.html (496 words)

	Sodalite, jewelry made with sodalite. (via CobWeb/3.1 planetlab2.cs.virginia.edu) (Site not responding. Last check: 2007-11-05)
		The group of minerals that sodalite belongs to is actually named after it.
		Besides sodalite, other members of the sodalite group of minerals also include hauyne, lazurite, and nosean.
		The word sodalite is derived from sodium, which is the main component of all of the minerals in the group.
	www.nandadesigns.com.cob-web.org:8888 /sodalite.php (332 words)

	Nosean Mineral Data
		Hassan I, Grundy H D, The Canadian Mineralogist, 27 (1989) p.165-172, The Structure of Nosean, Ideally Na8(Al6Si6O24)SO4.H2O, Note: O2 z-coordinate has been corrected according to the ICSD
		Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g.
		Print or Cut-and-Paste your Nosean Specimen Label here :
	www.webmineral.com /data/Nosean.shtml (285 words)

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