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Topic: Hauyne

	Leucite - LoveToKnow 1911
		The leucitophyres are rare rocks which have been described from various parts of the volcanic district of the Rhine (Olbriick, Laacher See, andc.) and from Monte Vulture in Italy.
		Among the accessory minerals biotite, brown hornblende, hauyne, iron oxides and apatite are the commonest; melanite and nepheline may also occur.
		Sanidine, melanite, hauyne and perofskite are frequent accessory minerals in these rocks, and many of them contain melilite in some quantity.
	www.1911encyclopedia.org /Leucite (1414 words)

	Thaigem.com \| Info Center \| A-Z Gemstones \| From Gemology To Mythology Learn More About Hauyne At Our A-Z Gemstones (Site not responding. Last check: 2007-10-13)
		Hauyne (sometimes called Huaynite) is a rare gem who was named after Mr.
		Hauyne has a beautiful color and is difficult to facet because of its perfect cleavage, making it a highly prized and expensive collector’s gem.
		Hauyne is also believed by some to encourage peacefulness and self-acceptance.
	www.thaigem.com /a-z_gemstones/dis_Hauyne.asp (285 words)

	Thaigem.com \| Info Center \| Gemstone Discovery \| Hauyne (Site not responding. Last check: 2007-10-13)
		Hauyne belongs to the Sodalite mineral group, which is composed of minerals with a similar isometric structure and related chemistry.
		Hauyne is formed from Sodium Calcium Aluminum Silicate Sulfate [(Na, Ca) 48Al6Si6(O, S) 24(SO4, Cl) 1-2].
		Huayne naturally occurs in igneous rocks low in silica and rich in alkalies such as volcanic rocks, which provide the chemical supply and the environment needed for the mineral to form.
	www.thaigem.com /dis_hauyne.asp (255 words)

	Trinity Mineral Co - The Munich 2000 Show (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-10-13)
		Hauyne is a member of the sodalite group of minerals.
		All of these specimens from Eifel are amorphous grains but many are of gem grade hauyne.
		1.6 x 1.1 cm specimen with a 5 mm gemmy grain of hauyne.
	www.trinityminerals.com.cob-web.org:8888 /ms2000/hauyne.shtml (226 words)

	Trinity Mineral Co - The 2001 Sainte-Marie-aux-Mines Show
		I saw this lot of hauynes at the show and they were just too colorful and the grains too large to pass up.
		Hauyne is a member of the sodalite group which includes other species such as hackmanite, sodalite and lazurite.
		Actual crystals of hauyne are found on this specimen to 3 mm across.
	www.trinityminerals.com /sm2001/hauyne.shtml (203 words)

	Elongated twins of sodalite and other isometric minerals Mineralogical Record - Find Articles
		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.
		Modifying forms are the cube as on the hauyne shown in Figure 4 and the octahedron.
	www.findarticles.com /p/articles/mi_qa3672/is_200003/ai_n8889182 (950 words)

	Trinity Mineral Co - The Munich 2000 Show
		All specimens are from this show are now Sold though not necessarily marked as such
		On my last day at the show I ventured into the jewelry section and found a German dealer who had a nice supply of these rarely seen specimens of hauyne.
		I have not seen many specimens as rich as this one with this rich blue mineral.
	www.trinityminerals.com /ms2000/hauyne.shtml (220 words)

	ROCKS THAT PAUL WOULD HAVE LOVED: PETROLOGY OF HAUYNE PHONOLITES AND TRACHYTES FROM TAHITI
		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.
		Sufficient Cl was present in the remaining ne-normative melt to allow the abrupt shift from hauyne to sodalite 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)

	Leucite Information Center - leucite
		The augite varies a good deal in character, being green, brown or violet, but aegirinc (the dark green pleochroic soda-iron-augite) is seldom present.
		Sanidine, melanite, hauyne and perovskite are frequent accessory minerals in these rocks, and many of them contain melilite in some quantity, The well-known leucitite of the Capo di Bove, near, Rome, is rich in this mineral, which forms irregular plates, yellow in the hand specimen, enclosing many small rounded crystals of leucite.
		Bracciano and Roccamonfina are other Italian localities for leucitite, and in Java, Montana, Celebes and New South Wales similar rocks occur, The leucite basalts belong to more basic types and are rich in olivine and augite.
	www.scipeeps.com /Sci-Chemistry_Topics_J_-_Le/Leucite.html (1407 words)

	234 (Site not responding. Last check: 2007-10-13)
		Melt inclusions in hauyne, sphene, sanidine and clinopyroxene vary between 800 and 3500 µg/g, but show the same trend of SO2-enrichment in more mafic parts of the magma column.
		Only melt inclusions in hauyne show a detectable enrichment of Br and Mo, while melt inclusions in sanidine and clinopyroxene are not enriched.
		This suggests either a compositional gradient of Br and Mo towards the crystal/melt interface during growth of hauyne or a post-entrapment diffusion of Br and Mo between the melt inclusions and host hauynes (Qin et al., 1992).
	www.the-conference.com /JConfAbs/1/234.html (319 words)

	You Can Run But You Can't Hide
		Hauyne rubbed his face with a work-worn hand, and backed off.
		Hauyne gave him a startled glance, and he composed himself again.
		Thom sidled over to squint at the screen, noting with surprise that there was already a neat listing of date, time, various names, and a description of injuries signed by Hauyne.
	www.geocities.com /jellywormman/stories/ycrbych5.html (4941 words)

	Lapis Lazuli (Site not responding. Last check: 2007-10-13)
		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)

	USGS Spectroscopy Lab - Clark et. al. 2003 Spectral Library splib05a
		The intensities of the hauyne closely matched the non-wollastonite reflections; those of lazurite-C did not.
		Subsequent manual overlay of the six wollastonite patterns in the PDF2 database onto the non-sodalite-group reflections in HS-418 indicates that the wollastonite is of 2M, not 1A, structure type.
		These six peaks are explained by a primitive cubic lattice; the cell edge, 9.08 angstroms, excludes sodalite but leaves other members of the sadalite group, nosean, lazurite, and hauyne, or their solid solution, as a possibilities (see Deer, et al., 1962).
	pubs.usgs.gov /of/2003/ofr-03-395/DESCRIPT/M/lazurite_hs418.html (192 words)

	July 1998: Selling Beautiful Gems with Ugly Names
		Because of its relatively low cost and its extremely rich green color, this gem is faring well in spite of its appellation; it’s currently quite popular.
		Hauyne was named after Abbé René Just Hauy (1743-1822), author of what could be considered the first modern scientific journal on gemology (1817).
		Although he notes that he’s sold a lot of hauyne over the years, Frazier laments, “of course, I’m not driving a Bentley.” He might have been, if the stone had a more romantic name.
	jck.polygon.net /archives/1998/07/jc078-121.html (1897 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)

	Hauyne (Site not responding. Last check: 2007-10-13)
		HABITS : the crystals have pseudo-octahedral and dodecaedric habits, but much often the hauyne is found massive, granular and in aggregates; not rare geminates
		HISTORY : they were Brunn and Neergard in 1807 to make the declaration of this mineral (locality type the Somma Mount) dedicated to R. Haüy (a famous French cristallographous)
		COMMENT : this species is recognizable for color and the matrix on which it is recovered, but objective can be confused (without to arrange of equipment from laboratory) with other minerals (main those of the sodalite group); most beatiful hauyne colors are tonalities of nice intense blue
	www.minerali.it /minerali2/h/hauyneenglish.htm (200 words)

	Poor Blues
		As I understand, it's not easy to find Hauyne in sizes larger than 0.30 ct? Or maybe I'm mistaken.
		Check out Hauynes on the site of this German dealer.
		Speaking of apatite, was watching acntv and they were showing a peacock blue apatite, so went on a search and found this.
	www.pricescope.com /idealbb/view.asp?topicID=13682 (819 words)

	Pictures from 5 Aug
		In this area sediments become trapped and form “cover bed series”.
		An example of a blue hauyne crystal (pr.
		The Niedermendiger lava flow (just less than 12.9 ka) has been quarried for many centuries for use as millstones.
	ougseurope.org /trips/eifel/morepic5aug.asp (151 words)

	Haüyne: Haüyne mineral information and data. (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-10-13)
		There is no specific data on health dangers or toxicity for this mineral, however you should always treat mineral samples as potentially toxic/dangerous and use sensible precautions when handling them.
		Van Peteghem, J.K. and Burley, B.J. (1963) Studies on solid solution between sodalite, nosean, and hauyne.
		Hassan, I. and Grundy, H.D. (1991) The crystal structure of hauyne at 293 and 153 K. Canadian Mineralogist: 29: 123-130.
	www.mindat.org.cob-web.org:8888 /show.php?name=Hauyne (721 words)

	Lapis Lazuli
		Lapis Lazuli is a blue rock made up of several different minerals, including lazurite, sodalite, hauyne, calcite, and pyrite.
		The composition and color of lapis lazuli varies, but it is the intense dark blue, with minor patches of white calcite and brassy yellow pyrite that is considered to be the best quality.
		These items are genuine lapis lazuli stones set in sterling silver.
	www.dbgifts.net /lapislazuli.html (135 words)

	Hauyne - YourGemologist / International School of Gemology Forums Board
		Hauyne - YourGemologist / International School of Gemology Forums Board
		Just to inform that I have put quantities of HAUYNE on my website.
		No part of this ISG Forums Board may be downloaded or used without written permission of Robert James FGA, GG.
	www.yourgemologist.com /ISGForumsBoard/showthread.php?t=947 (116 words)

	Hauyne Mineral Data
		Comments: Grains of deep blue hauyne crystals in matrix.
		Hassan I, Grundy H D, The Canadian Mineralogist, 29 (1991) p.123-130, The crystal structure of hauyne at 293 and 153 K, Sample: at T = 153 K, Locality: Valle Biacheela, Sacrafano, Italy
		Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g.
	webmineral.com /data/Hauyne.shtml (277 words)

	GemRocks: Lapis Lazuli
		DESCRIPTION: Most lapis lazuli comprises a crystalline aggregate made up largely of blue lazurite (a mineral of the sodalite group), plus noteworthy amounts of macroscopic white calcite and pyrite grains.
		Some lapis lazuli contains one or more of the other minerals of the sodalite group -- hauyne, nosean, and sodalite per se -- along with or in lieu of the lazurite.
		In addition, some lapis lazuli also contains minor amounts of phlogopite mica, diopside, amphibole, mica, etc., each of which may or may not be macroscopically discernible.
	www.cst.cmich.edu /users/dietr1rv/lapis.htm (1983 words)

	Bead, lapis lazuli, flat oval, 6x4mm, A/B+ grade. (Natural) 15in strand. - Fire Mountain Gems and Beads
		The beautiful mixture of textures of white calcite (cloudy, patchy) and pyrite (brassy feathering) gives lapis lazuli its characteristic look.
		The stone has other ingredients: lazurite, sodalite and hauyne.
		This item is assortable with ALL other products.
	www.firemountaingems.com /details.asp?PN=K098728CK (183 words)

	Sodalite (Site not responding. Last check: 2007-10-13)
		Discovered in the early 1800’s in Greenland, Sodalite was named because of its high sodium content.
		Sodalite is a member of the Sodalite group and together with Hauyne, Nosean and Lazurite is a component of Lapis Lazuli.
		Sodalite, quite well known in the semi-precious gemstone trade, did not become important as a gemstone until 1891 when it was unearthed at a deposit near Bancroft, Ontario by Frank D. Adams while he was investigating the geology of the Haliburton-Hastings area for the Geological Survey of Canada.
	www.beverlyhillssterling.com /education/gem-stones/sodalite.html (632 words)

	Lapis Lazuli Fashion Jewelry World: Handcrafted Gemstone jewelry, Sterling Silver and 18K Gold Earrings, Bracelets, ... (Site not responding. Last check: 2007-10-13)
		Lapis is a beautiful royal blue stone often associated with royalty.
		Lapis is actually a rock made up of several different minerals, usually lazurite, hauyne, sodalite and nosean, all members of the sodalite group of minerals.
		Also present are calcite and pyrite in varying percentages.
	www.fashionjewelryworld.com /store/customer/home.php?cat=39 (251 words)

	Lapis Lazuli
		Lapis Lazuli is not, like most gemstones, a pure mineral, but rather a rock composed of varying proportions of the minerals: lazurite, sodalite, hauyne, calcite, and pyrite.
		Primarily the result of contact metamorphism of certain limestones, it is found in rather large deposits, but at few locations.
		All text and images, unless otherwise designated, © 2006 Barbara Smigel
	www.bwsmigel.info /GEOL.115.ESSAYS/Gemology.Lapis.html (1001 words)

	Crystals for Sale: HAUYNE, Cut Stones
		Quite a largish stone for this rare hauyne.
		For up to date news about our online shop, trade shows, or exhibitions just click here
		Take a look at our Special Offers page, where you will find some excellent bargains!
	www.crystalvine.co.uk /proddetail.asp?prod=hauyne (51 words)

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