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Metamictisation leads to an enlarged unit cell.","On {101}","Typically occurs in simple, short to long prismatic crystals, usually capped by bipyramids. Sometimes in pseudo-octahedral bipyramids, and second order prisms and bipyramids may occur. Pinacoids and tabular crystals are less common, as are acanthine crystals.",7.5,"4.6","4.7","4.714","Adamantine","Adamantine,Vitreous,Greasy","Greasy when metamict","Transparent,Translucent,Opaque","White","Colourless, yellow, grey, reddish-brown, green, brown, black, rarely blue",[59,60,61,62,63,64,65,66],"colorless","yellow","gray","brown","red","green","black","blue",[68],"white","Many zircons are fluorescent, but some (mainly metamict ones) are not. Fluorescent zircon, from dull to bright in intensity, shows shades of yellow, golden-yellow and yellow-brown (SW UV). This property is often diagnostic in identification.","Indistinct on {110}{111}","Poor\u002FIndistinct","Conchoidal","brittle","Uniaxial","+","1.925","1.961","1.98","2.015",1.925,2.015,"Very strong","Weak","Thermoluminescent","Cathodoluminescent","An accessory mineral in igneous and metamorphic rocks.","Zircon Group. The zirconium analogue of Thorite and Hafnon. Zircon-Hafnon Series. The low-pressure dimorph of Reidite.\r\n\r\nZircon, zirconium orthosilicate, is found in most igneous rocks and some metamorphic rocks as small crystals or grains, mostly wid...","\u003Cstrong>Zirkon\u003C\u002Fstrong> appears to occur first in Abraham Gottlob Werner's (1780) translation of Axel F. Cronstedt's \"\u003Cem>Försök till en mineralogie, eller mineral rikets upställning.\u003C\u002Fem>\" (1751). Werner adds a short additional comment to Cronstedt's text: \"Jargons oder Zirkonen sind weisse, graue, auch blasgelbe und blasrothe Hyazinthen; die öfters für Diamante verkauft werden.\" Werner considers zirkon as an alternative spelling for \u003Cstrong>sargone\u003C\u002Fstrong> or \u003Cstrong>jargon\u003C\u002Fstrong>.\r\n\r\nThese latter names, and thereby zircon, descend from medieval French (\u003Cstrong>jargonce\u003C\u002Fstrong>), Italian (\u003Cstrong>giarconsia\u003C\u002Fstrong>) and Spanish (\u003Cstrong>iargonça\u003C\u002Fstrong>). These in turn originate from the old French \u003Cstrong>jargonce\u003C\u002Fstrong>. The Dictionnaire Étymologique de l'Ancien Français (2007) provides several references and quotes for \u003Cstrong>jargonce\u003C\u002Fstrong>, the oldest from the 12th century. \r\n\r\nGerman scientists adapted the name \u003Cstrong>zirkon\u003C\u002Fstrong> and work by Klaproth, Emmerling and others established \u003Cstrong>zirkon\u003C\u002Fstrong> as the preferred spelling in scientific literature. Hauy (1801) in his \u003Cem>Traité de minéralogie\u003C\u002Fem> also adapted the name \u003Cstrong>zircon\u003C\u002Fstrong>.\r\n\r\nIt has been suggested that jargonce is related to the medieval Syriac \u003Cstrong>yaqūndā\u003C\u002Fstrong>, a similar gemstone. (Smith, R. P., & Hanson, K. C. (Eds.) (2007) Thesaurus syriacus). This suggestion leans heavily on Schuchardt (1904). He discusses in detail the link between Greek ὐαϰινθος, the Latin Hyacinthus and the Syriac jūganta, but he fails to address the phonetic leap between hyacinth and jargons in French, or to give any explanation as of how, when or why hyacinthus were changed to jargons.\r\n\r\nThe common association of zircon with Arabic and Persian “\u003Cstrong>azargun\u003C\u002Fstrong>” seems to be a modern construct, as there is no etymological evidence supporting this association.\r\n\r\nIt is possible to trace the word jargons\u002Fjargonce and their spelling variants back to France in the 12th or 13th century, but the original meaning of the word is not known. Any theory proposing the origin and original meaning of this word must be able to link this origin with the usage in France in the 12th and 13th century. \r\n\r\nSee also https:\u002F\u002Fwww.mindat.org\u002Farticle.php\u002F4833\u002FZircon+-+The+early+history+and+the+origin+of+the+name","2026-05-07 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Blancourt, Jean Haudicquer (1697) \u003Ci> L'art de la verrerie\u003C\u002Fi>. 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(2008) Dissolution-reprecipitation of zircon at low-temperature, high-pressure conditions (Lanzo Massif, Italy) \u003Ci>American Mineralogist\u003C\u002Fi>,  93 (10) 1519-1529 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2008.2874'>doi:10.2138\u002Fam.2008.2874\u003C\u002Fa>","10.2138\u002Fam.2008.2874",{"id":485,"year":481,"html":486,"doi":487},153399,"Nasdala, Lutz, Miletich, Ronald, Ruschel, Katja, Váczi, Tamás (2008) Raman study of radiation-damaged zircon under hydrostatic compression. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  35 (10) 597-602 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00269-008-0251-5'>doi:10.1007\u002Fs00269-008-0251-5\u003C\u002Fa>","10.1007\u002Fs00269-008-0251-5",{"id":489,"year":490,"html":491,"doi":492},177548,2009,"Hay, D. C., Dempster, T. J. (2009) Zircon Behaviour during Low-temperature Metamorphism. \u003Ci>Journal of Petrology\u003C\u002Fi>,  50 (4) 571-589 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1093\u002Fpetrology\u002Fegp011'>doi:10.1093\u002Fpetrology\u002Fegp011\u003C\u002Fa>","10.1093\u002Fpetrology\u002Fegp011",{"id":494,"year":495,"html":496,"doi":497},296456,2010,"Nasdala, Lutz, Hanchar, John M., Rhede, Dieter, Kennedy, Allen K., Váczi, Tamás (2010) Retention of uranium in complexly altered zircon: An example from Bancroft, Ontario. \u003Ci>Chemical Geology\u003C\u002Fi>,  269 (3) 290-300 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.chemgeo.2009.10.004'>doi:10.1016\u002Fj.chemgeo.2009.10.004\u003C\u002Fa>","10.1016\u002Fj.chemgeo.2009.10.004",{"id":499,"year":495,"html":500,"doi":501},396439,"Kempe, U., Thomas, S.-M., Geipel, G., Thomas, R., Plotze, M., Bottcher, R., Grambole, G., Hoentsch, J., Trinkler, M. (2010) Optical absorption, luminescence, and electron paramagnetic resonance (EPR) spectroscopy of crystalline to metamict zircon: Evidence for formation of uranyl, manganese, and other optically active centers. \u003Ci>American Mineralogist\u003C\u002Fi>,  95 (2) 335-347 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2010.3248'>doi:10.2138\u002Fam.2010.3248\u003C\u002Fa>","10.2138\u002Fam.2010.3248",{"id":503,"year":495,"html":504,"doi":505},79054,"Van Lichtervelde, Marieke, Holtz, Francois, Hanchar, John M. (2010) Solubility of manganotantalite, zircon and hafnon in highly fluxed peralkaline to peraluminous pegmatitic melts. \u003Ci>Contributions to Mineralogy and Petrology\u003C\u002Fi>,  160 (1) 17-32 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00410-009-0462-x'>doi:10.1007\u002Fs00410-009-0462-x\u003C\u002Fa>","10.1007\u002Fs00410-009-0462-x",{"id":507,"year":508,"html":509,"doi":510},388082,2012,"Wilke, Max, Schmidt, Christian, Dubrail, Julien, Appel, Karen, Borchert, Manuela, Kvashnina, Kristina, Manning, Craig E. (2012) Zircon solubility and zirconium complexation in H2O+Na2O+SiO2±Al2O3 fluids at high pressure and temperature. \u003Ci>Earth and Planetary Science Letters\u003C\u002Fi>,  349. 15-25 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.epsl.2012.06.054'>doi:10.1016\u002Fj.epsl.2012.06.054\u003C\u002Fa>","10.1016\u002Fj.epsl.2012.06.054",{"id":512,"year":513,"html":514,"doi":515},670749,2014,"Roszjar, Julia, Whitehouse, Martin J., Bischoff, Addi (2014) Meteoritic zircon – Occurrence and chemical characteristics. \u003Ci>Geochemistry\u003C\u002Fi>,  74 (3) 453-469 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.chemer.2014.05.002'>doi:10.1016\u002Fj.chemer.2014.05.002\u003C\u002Fa>","10.1016\u002Fj.chemer.2014.05.002",{"id":517,"year":518,"html":519,"doi":520},397792,2015,"Kohn, M. J., Corrie, S. L., Markley, C. (2015) The fall and rise of metamorphic zircon. \u003Ci>American Mineralogist\u003C\u002Fi>,  100 (4) 897-908 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam-2015-5064'>doi:10.2138\u002Fam-2015-5064\u003C\u002Fa>","10.2138\u002Fam-2015-5064",{"id":522,"year":518,"html":523,"doi":524},397811,"Lenz, Christoph; Nasdala, Lutz (2015) A photoluminescence study of REE\u003Csup>3+\u003C\u002Fsup> emissions in radiation-damaged zircon. \u003Ci>American Mineralogist\u003C\u002Fi>,  100 (5). 1123-1133 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam-2015-4894ccbyncnd'>doi:10.2138\u002Fam-2015-4894ccbyncnd\u003C\u002Fa>","10.2138\u002Fam-2015-4894ccbyncnd",{"id":526,"year":518,"html":527,"doi":528},397838,"Baldwin, Suzanne L. (2015) Zircon dissolution and growth during metamorphism. \u003Ci>American Mineralogist\u003C\u002Fi>,  100 (5) 1019-1020 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam-2015-5279'>doi:10.2138\u002Fam-2015-5279\u003C\u002Fa>","10.2138\u002Fam-2015-5279",{"id":530,"year":518,"html":531,"doi":532},298524,"Lenz, Christoph, Nasdala, Lutz, Talla, Dominik, Hauzenberger, Christoph, Seitz, Roland, Kolitsch, Uwe (2015) Laser-induced REE3+ photoluminescence of selected accessory minerals — An “advantageous artefact” in Raman spectroscopy. \u003Ci>Chemical Geology\u003C\u002Fi>,  415. 1-16 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.chemgeo.2015.09.001'>doi:10.1016\u002Fj.chemgeo.2015.09.001\u003C\u002Fa>","10.1016\u002Fj.chemgeo.2015.09.001",{"id":534,"year":535,"html":536,"doi":537},176846,2016,"Bindeman, Ilya N., Melnik, Oleg E. (2016) Zircon Survival, Rebirth and Recycling during Crustal Melting, Magma Crystallization, and Mixing Based on Numerical Modelling. \u003Ci>Journal of Petrology\u003C\u002Fi>,  57 (3) 437-460 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1093\u002Fpetrology\u002Fegw013'>doi:10.1093\u002Fpetrology\u002Fegw013\u003C\u002Fa>","10.1093\u002Fpetrology\u002Fegw013",{"id":539,"year":535,"html":540,"doi":541},65353,"Kempe, Ulf, Trinkler, Michael, Pöppl, Andreas, Himcinschi, Cameliu (2016) Coloration of Natural Zircon. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  54 (3) 635-660 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3749\u002Fcanmin.1500093'>doi:10.3749\u002Fcanmin.1500093\u003C\u002Fa>","10.3749\u002Fcanmin.1500093",{"id":543,"year":535,"html":544,"doi":545},129518,"Grüneberger, Anja Maria, Schmidt, Christian, Jahn, Sandro, Rhede, Dieter, Loges, Anselm, Wilke, Max (2016) Interpretation of Raman spectra of the zircon–hafnon solid solution. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  28 (4) 721-733 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002Fejm\u002F2016\u002F0028-2551'>doi:10.1127\u002Fejm\u002F2016\u002F0028-2551\u003C\u002Fa>","10.1127\u002Fejm\u002F2016\u002F0028-2551",{"id":547,"year":548,"html":549,"doi":550},539627,2017,"Timms, Nicholas E., Erickson, Timmons M., Pearce, Mark A., Cavosie, Aaron J., Schmieder, Martin, Tohver, Eric, Reddy, Steven M., Zanetti, Michael R., Nemchin, Alexander A., Wittmann, Axel (2017) A pressure-temperature phase diagram for zircon at extreme conditions. \u003Ci>Earth-Science Reviews\u003C\u002Fi>,  165. 185-202 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.earscirev.2016.12.008'>doi:10.1016\u002Fj.earscirev.2016.12.008\u003C\u002Fa>","10.1016\u002Fj.earscirev.2016.12.008",{"id":552,"year":548,"html":553,"doi":554},1163672,"Chen, Wei Terry, Zhou, Mei-Fu (2017) Hydrothermal alteration of magmatic zircon related to NaCl-rich brines: Diffusion-reaction and dissolution-reprecipitation processes. \u003Ci>American Journal of Science\u003C\u002Fi>,  317 (2) 177-215 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2475\u002F02.2017.02'>doi:10.2475\u002F02.2017.02\u003C\u002Fa>","10.2475\u002F02.2017.02",{"id":556,"year":548,"html":557,"doi":558},6703180,"Schaltegger, Urs; Davies, Joshua H.F.L. (2017) Petrochronology of Zircon and Baddeleyite in Igneous Rocks: Reconstructing Magmatic Processes at High Temporal Resolution. \u003Ci>Reviews in Mineralogy and Geochemistry\u003C\u002Fi>,  83 (1). 297-328 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Frmg.2017.83.10'>doi:10.2138\u002Frmg.2017.83.10\u003C\u002Fa>","10.2138\u002Frmg.2017.83.10",{"id":560,"year":548,"html":561,"doi":562},154167,"Váczi, Tamás, Nasdala, Lutz (2017) Electron-beam-induced annealing of natural zircon: a Raman spectroscopic study. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  44 (6) 389-401 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00269-016-0866-x'>doi:10.1007\u002Fs00269-016-0866-x\u003C\u002Fa>","10.1007\u002Fs00269-016-0866-x",{"id":564,"year":548,"html":565,"doi":11},17889905,"Kohn, M. J., Kelly, N. M (2017) Petrology and geochronology of metamorphic zircon. In \u003Ci>Microstructural Geochronology: Planetary Records Down to Atom Scale\u003C\u002Fi>. American Geophysical Union. p.35-61.",[567,573,583,591,598,607,615,622,629,639,645,652,660,669,679,686,694,703,710,716,726,733,741,748,755,761,766,773,782],{"id":568,"source_url":569,"license_code":570,"credit_html":571,"title":7,"description":11,"author":11,"original_width":572,"original_height":572},31046,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F91533","CC BY-SA 4.0","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F91533\" rel=\"noopener\">The Estonian Museum of Natural History\u003C\u002Fa> via Europeana",1000,{"id":574,"source_url":575,"license_code":576,"credit_html":577,"title":578,"description":579,"author":580,"original_width":581,"original_height":582},28851,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447384","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10447384\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zircon-dtn1a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGilgit\" class=\"extiw\" title=\"en:Gilgit\">Gilgit\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGilgit_District\" class=\"extiw\" title=\"en:Gilgit District\">Gilgit District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGilgit-Baltistan\" class=\"extiw\" title=\"en:Gilgit-Baltistan\">Northern Areas\u003C\u002Fa>, Pakistan (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2530.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 1.8 x 1.5 x 1.1 cm\n\u003Cdl>\u003Cdt>Zircon\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is a lustrous, gemmy, cognac-colored crystal of zircon perched on a sugary, tan matrix of calcite. The tetragonal form of the almost, 1.0 cm zircon crystal, is very evident. It is a superb thumbnail, and of a quality that is extremely rare for the locality - let alone in an aesthetic specimen of any kind! This complex crystal is stunning.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",581,600,{"id":584,"source_url":585,"license_code":576,"credit_html":586,"title":587,"description":588,"author":580,"original_width":589,"original_height":590},28853,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466003","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10466003\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zircon-t09zirc-06c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Harchu (Harchoo), Astor valley (Astore valley), Astor District (Astore District), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGilgit-Baltistan\" class=\"extiw\" title=\"en:Gilgit-Baltistan\">Northern Areas\u003C\u002Fa>, Pakistan (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-191066.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 2.6 x 2.4 x 1.9 cm\n\u003Cdl>\u003Cdt>Zircon\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Nestled in a mass of quartz and biotite mica are 6 glowing crystals of equant, glassy and gemmy, orangy-red, zircon, to 1 cm across. Very bright and showy!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",400,367,{"id":592,"source_url":593,"license_code":576,"credit_html":594,"title":595,"description":596,"author":580,"original_width":589,"original_height":597},87227,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449792","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449792\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zircon-j08-06b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Flora Mt, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FLovozero_Massif\" class=\"extiw\" title=\"en:Lovozero Massif\">Lovozero Massif\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKola_Peninsula\" class=\"extiw\" title=\"en:Kola Peninsula\">Kola Peninsula\u003C\u002Fa>, Murmanskaja Oblast', \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Region\" class=\"extiw\" title=\"en:Northern Region\">Northern Region\u003C\u002Fa>, Russia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2693.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 1.7 x 1.7 x 1.4 cm\n\u003Cdl>\u003Cdt>Zircon\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A TEXTBOOK-quality floater crystal of zircon from Russia � translucent, a deep coffee color, with a pretty internal shimmer. This crystal is sharp as a razor and perfectly symmetrical. It is a fullsized thumbnail and is 8 grams.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",308,{"id":599,"source_url":600,"license_code":570,"credit_html":601,"title":602,"description":603,"author":604,"original_width":605,"original_height":606},87233,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=113719466","Koreller, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=113719466\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Muséum de Nantes - 105 - Zircon (Ceylan et Madagascar).jpg","Zircon, en provenance de Ceylan et de Madagascar, au Muséum de Nantes","Koreller",2656,2364,{"id":608,"source_url":609,"license_code":570,"credit_html":610,"title":611,"description":612,"author":604,"original_width":613,"original_height":614},87234,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=113721534","Koreller, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=113721534\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Muséum de Nantes - 256 - Zircon (Madagascar).jpg","Zircon, en provenance de Madagascar, au Muséum de Nantes",2288,1504,{"id":616,"source_url":617,"license_code":570,"credit_html":618,"title":619,"description":612,"author":604,"original_width":620,"original_height":621},87235,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=113721536","Koreller, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=113721536\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Muséum de Nantes - 257 - Zircon (Madagascar).jpg",3436,2136,{"id":623,"source_url":624,"license_code":570,"credit_html":625,"title":626,"description":612,"author":604,"original_width":627,"original_height":628},87236,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=113721540","Koreller, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=113721540\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Muséum de Nantes - 260 - Zircon (Madagascar).jpg",2384,1544,{"id":630,"source_url":631,"license_code":632,"credit_html":633,"title":634,"description":635,"author":636,"original_width":637,"original_height":638},87238,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=165552103","CC BY 4.0","Vicpeters, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=165552103\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zircon rock (3.96 billion years old). American Museum of Natural History.jpg","Zircon rock (3.96 billion years old). American Museum of Natural History","Vicpeters",4032,3024,{"id":640,"source_url":641,"license_code":632,"credit_html":642,"title":643,"description":644,"author":636,"original_width":637,"original_height":638},87239,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=165552108","Vicpeters, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=165552108\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","The oldest zircon crystall (4.276 billion years old). American Museum of Natural History.jpg","The oldest zircon crystall (4.276 billion years old). American Museum of Natural History",{"id":646,"source_url":647,"license_code":576,"credit_html":648,"title":649,"description":650,"author":580,"original_width":582,"original_height":651},51571,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137213","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10137213\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Uranpyrochlore-Zircon-69241.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FUranpyrochlore\" class=\"extiw\" title=\"en:Uranpyrochlore\">Uranpyrochlore\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa> (Var.: Zircon)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: MacDonald mine, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHybla\" class=\"extiw\" title=\"en:Hybla\">Hybla\u003C\u002Fa>, Monteagle Township, Bancroft District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHastings_County,_Ontario\" class=\"extiw\" title=\"en:Hastings County, Ontario\">Hastings County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOntario\" class=\"extiw\" title=\"en:Ontario\">Ontario\u003C\u002Fa>, Canada (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-544.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Just a neat locality piece with small black crystals of uranpyrochlore and brown crystals of zircon mixed in. 6.8 x 4 x 2.7 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",435,{"id":653,"source_url":654,"license_code":576,"credit_html":655,"title":656,"description":657,"author":580,"original_width":658,"original_height":659},59821,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10134019","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10134019\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Zircon-49506.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGilgit\" class=\"extiw\" title=\"en:Gilgit\">Gilgit\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGilgit_District\" class=\"extiw\" title=\"en:Gilgit District\">Gilgit District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGilgit-Baltistan\" class=\"extiw\" title=\"en:Gilgit-Baltistan\">Northern Areas\u003C\u002Fa>, Pakistan (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2530.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>This is a lustrous, gemmy, cognac-colored crystal of zircon perched on a sugary, tan matrix of calcite. The tetragonal form of the almost, 1.0 cm zircon crystal, is very evident. It is a superb thumbnail, and of a quality that is extremely rare for the locality - let alone in an aesthetic specimen of any kind! This complex crystal is stunning. 1.8 x 1.5 x 1.1 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",482,519,{"id":661,"source_url":662,"license_code":576,"credit_html":663,"title":664,"description":665,"author":666,"original_width":667,"original_height":668},19208,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=24995923","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=24995923\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Pezzottaïte, amazonite, zircon 1.jpeg","beryl var. pezzottaite-(Cs), microcline var. amazonite, zircon : Sakavalana mine, Ambatovita, Mandrosonoro area, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar","Géry PARENT",4288,2848,{"id":670,"source_url":671,"license_code":672,"credit_html":673,"title":674,"description":675,"author":676,"original_width":677,"original_height":678},28856,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=182227297","CC BY 3.0","Nkansah Rexford, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=182227297\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Iziko Mineral Zircon (cropped).jpg","A dark-coloured zircon crystal embedded in a light-coloured rock matrix, on display at the Iziko Museum in Cape Town. The dark colour may be due to natural radioactive decay (metamictisation) of the uranium and thorium content, where the radiation disrupts the crystal lattice to create colour centres. Inclusions and altered zones, including fluid inclusions, are often rich in elements such as uranium, thorium or rare earth metals, causing darkening, turbidity or opacity. Interaction with hydrothermal fluids can also alter the zircon, enriching it with elements such as Fe, Al and P, creating darker zones. Zircon often forms in layers (oscillatory zoning) with different chemical compositions, resulting in alternating light and dark bands. \nIn South Africa, zircon crystals can be found in a white matrix such as white pegmatite (consisting of quartz and feldspar) or white calcite or carbonate rocks (associated with carbonatites). In the Barberton Greenstone Belt and surrounding areas, zircon is often found in white or light-coloured sedimentary quartzites, or in quartz-sericite schists. As in international deposits (and the Phalaborwa Complex), South African zircon can occur in white calcite or carbonatite rocks.","Nkansah Rexford",1459,1518,{"id":680,"source_url":681,"license_code":576,"credit_html":682,"title":683,"description":684,"author":580,"original_width":685,"original_height":582},17732,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441693","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10441693\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Niobophyllite-Zircon-mun05-35a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNiobophyllite\" class=\"extiw\" title=\"en:Niobophyllite\">Niobophyllite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Mt Malosa, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZomba_District\" class=\"extiw\" title=\"en:Zomba District\">Zomba District\u003C\u002Fa>, Malawi (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2276.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 4.7 x 2.9 x 1.8 cm\n\u003Cdl>\u003Cdt>Niobophyllite with Feldspar, Aegerine, Zircon\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>I have followed, or so I thought, the new finds out of Mt Maloso for the past 7-8 years pretty well. In that time, I have had lots of aegerine and arfvedsonite, zircon, parisite, etc etc....but I had never seen one of these and in fact I'd never even heard of the species before now and had to go look it up: it is a titanium and niobium-containing fluorosilicate, nicely complex and interesting. It was only recently reported (Lapis, 2003) from this new locality for the species. I am told that these are the best, compared to previous occurences. This piece features tightly packed, bladed crystals of a rusty orange color, accented by feldspar and aegerine, and a small zircon crystal. It is quite non-ugly in person, surprisingly enough. 4.7 x 2.9 x 1.8 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",476,{"id":687,"source_url":688,"license_code":576,"credit_html":689,"title":690,"description":691,"author":580,"original_width":692,"original_height":693},17734,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465441","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10465441\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Niobophyllite-Zircon-t07-94a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNiobophyllite\" class=\"extiw\" title=\"en:Niobophyllite\">Niobophyllite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Mt Malosa, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZomba_District\" class=\"extiw\" title=\"en:Zomba District\">Zomba District\u003C\u002Fa>, Malawi (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-2276.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 9.9 x 7.0 x 3.8 cm\n\u003Cdl>\u003Cdt>Niobophyllite with Zircon\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A shockingly large example of this rare species related to astrophyllite, from what has surely become the best locality for crystals of Niobophyllite. This very strange massif in Malawi has produced some awesome specimens of many very rare minerals. I had seen a trickle of niobos in the past, but nothing of this magnitude, and the cluster is really actually quite attractive with a shimmering brown-red hue. A small zircon crystal crowns the base.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",583,800,{"id":695,"source_url":696,"license_code":632,"credit_html":697,"title":698,"description":699,"author":700,"original_width":701,"original_height":702},18258,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=86713131","Marie-Lan Taÿ Pamart, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=86713131\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Aegirine zircon orthoclase MNHN Minéralogie.jpg","Aegirine, zircon and orthoclase from Mt Malosa, Malawi. Gallery of Mineralogy and Geology of the French National Museum of Natural History in Paris.","Marie-Lan Taÿ Pamart",5000,4000,{"id":704,"source_url":705,"license_code":570,"credit_html":706,"title":707,"description":708,"author":666,"original_width":365,"original_height":709},19209,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=42798793","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=42798793\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Pezzottaite, amazonite, zircon 7100.FS2015 1.jpg","beryl var. pezzottaite-(Cs), microcline var. amazonite, zircon : Sakavalana mine, Ambatovita, Mandrosonoro Commune, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar",1505,{"id":711,"source_url":712,"license_code":570,"credit_html":713,"title":714,"description":708,"author":666,"original_width":365,"original_height":715},19210,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=42798794","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=42798794\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Pezzottaite, amazonite, zircon 7100.FS2015.jpg",1713,{"id":717,"source_url":718,"license_code":719,"credit_html":720,"title":721,"description":722,"author":723,"original_width":724,"original_height":725},28174,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=32656644","Public domain","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=32656644\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Wöhlerite, Zircon-192196.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FW%C3%B6hlerite\" class=\"extiw\" title=\"en:Wöhlerite\">Wöhlerite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa> (FOV 2.4 x 3.0 mm)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada\u003C\u002Fdd>\n\u003Cdd>\u003Ci>Original description:\u003C\u002Fi> Orange wöhlerite with pale tan (partially coated) zircon di-pyramids.\u003C\u002Fdd>\n\u003Cdd>According to Horvath (Min Rec 1990), MSH xls have \"poorly defined terminations\" and \"commonly form aggregates of parallel growth crystals\". Both of these charactereistics are apparent here.\u003C\u002Fdd>\n\u003Cdd>The background xl is natrolite\u002Fgonnardite. The foreground xl is a fragment of microcline.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Modris Baum",814,1024,{"id":727,"source_url":728,"license_code":576,"credit_html":729,"title":730,"description":731,"author":580,"original_width":582,"original_height":732},57738,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175513","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10175513\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gummite-Uraninite-Zircon-62299.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGummite\" class=\"extiw\" title=\"en:Gummite\">Gummite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FUraninite\" class=\"extiw\" title=\"en:Uraninite\">Uraninite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRuggles_Mine\" class=\"extiw\" title=\"en:Ruggles Mine\">Ruggles mine\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGrafton\" class=\"extiw\" title=\"en:Grafton\">Grafton\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGrafton_County,_New_Hampshire\" class=\"extiw\" title=\"en:Grafton County, New Hampshire\">Grafton County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNew_Hampshire\" class=\"extiw\" title=\"en:New Hampshire\">New Hampshire\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3281.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A VERY RICH and COLORFUL slab of massive, black uraninite and yellow to green, secondary uraninite alteration products or \"gummite\" associated with much dark brown zircon. 8.7 x 7.1 x 2.0 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",493,{"id":734,"source_url":735,"license_code":576,"credit_html":736,"title":737,"description":738,"author":580,"original_width":739,"original_height":740},72137,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10451273","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10451273\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Betafite-Zircon-LTH56A.JPG","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBetafite\" class=\"extiw\" title=\"en:Betafite\">Betafite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Silver Crater Mine (Basin Property), Faraday Township, Bancroft District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHastings_County,_Ontario\" class=\"extiw\" title=\"en:Hastings County, Ontario\">Hastings County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOntario\" class=\"extiw\" title=\"en:Ontario\">Ontario\u003C\u002Fa>, Canada (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-545.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 2.7 x 2.3 x 1.8 cm\n\u003Cdl>\u003Cdt>Betafite with Zircon\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>An exceptional cluster of euhedral, sharp Betafite crystals, the largest of which is an amazing 1.8 cm across. These heavily modified cuboctahedrons are brown, with a vitreous waxy luster. Included in their surface are several reddish Zircon crystals - unusual! It is unusual to find these Betafites in such good-quality crystals and with a nice patina to them. Slightly radioactive, and rare in this quality.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",959,1200,{"id":742,"source_url":743,"license_code":576,"credit_html":744,"title":745,"description":746,"author":580,"original_width":747,"original_height":572},72138,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10451274","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10451274\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Betafite-Zircon-LTH56B.JPG","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBetafite\" class=\"extiw\" title=\"en:Betafite\">Betafite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Silver Crater Mine (Basin Property, later \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBicroft_Mine\" class=\"extiw\" title=\"en:Bicroft Mine\">Bicroft Mine\u003C\u002Fa>), Faraday Township, Bancroft District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHastings_County,_Ontario\" class=\"extiw\" title=\"en:Hastings County, Ontario\">Hastings County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOntario\" class=\"extiw\" title=\"en:Ontario\">Ontario\u003C\u002Fa>, Canada (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-545.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 2.7 x 2.3 x 1.8 cm\n\u003Cdl>\u003Cdt>Betafite with Zircon\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>An exceptional cluster of euhedral, sharp Betafite crystals, the largest of which is an amazing 1.8 cm across. These heavily modified cuboctahedrons are brown, with a vitreous waxy luster. Included in their surface are several reddish Zircon crystals - unusual! It is unusual to find these Betafites in such good-quality crystals and with a nice patina to them. Slightly radioactive, and rare in this quality.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",841,{"id":749,"source_url":750,"license_code":576,"credit_html":751,"title":752,"description":738,"author":580,"original_width":753,"original_height":754},72139,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10451275","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10451275\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Betafite-Zircon-LTH56C.JPG",1347,1500,{"id":756,"source_url":757,"license_code":576,"credit_html":758,"title":759,"description":738,"author":580,"original_width":760,"original_height":572},72140,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10451279","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10451279\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Betafite-Zircon-lth56d.jpg",862,{"id":762,"source_url":763,"license_code":576,"credit_html":764,"title":765,"description":665,"author":666,"original_width":667,"original_height":668},73616,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=24995921","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=24995921\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Pezzottaïte, amazonite, zircon.jpeg",{"id":767,"source_url":768,"license_code":570,"credit_html":769,"title":770,"description":708,"author":666,"original_width":771,"original_height":772},73618,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=46783824","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=46783824\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Pezzottaïte, amazonite, zircon 300.3.FS2013 1.jpg",1981,1316,{"id":774,"source_url":775,"license_code":570,"credit_html":776,"title":777,"description":778,"author":779,"original_width":780,"original_height":781},79366,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=95706884","Benoit Potin, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=95706884\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Paleoproterozoic stromatolite laminae shungite Franceville Gabon.jpg","This natural vertical section of a flat stromatolite shows a succession of light and dark laminae.\n\u003Cp>Dark bands are the areas where the microorganisms have proliferated. \nThey are now made of shungite (highly evoluted bitumen).\nLight bands are the areas where the sediment has been trapped.\nAt the top, on the left, the very refractive crystal is a probable zircon. \n\u003C\u002Fp>\nModified by CombineZP from five shots.","Benoit Potin",3263,2445,{"id":783,"source_url":784,"license_code":719,"credit_html":785,"title":786,"description":787,"author":723,"original_width":788,"original_height":725},86334,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=32656873","Modris Baum, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=32656873\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Wöhlerite, Zircon, Natrolite, Microcline-282766.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FW%C3%B6hlerite\" class=\"extiw\" title=\"en:Wöhlerite\">Wöhlerite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FZircon\" class=\"extiw\" title=\"en:Zircon\">Zircon\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNatrolite\" class=\"extiw\" title=\"en:Natrolite\">Natrolite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FMicrocline\" class=\"extiw\" title=\"en:Microcline\">Microcline\u003C\u002Fa> (FOV 4.8 x 6.7 mm)\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada\u003C\u002Fdd>\n\u003Cdd>\u003Ci>Original description:\u003C\u002Fi> Orange wöhlerite (partial xl) with tan zircon bi-pyramids and white \"natrolite\" on a bit of microcline. (The \"natrolite\" is falling apart and all or most of it is probably gonnardite.)\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",717,[790,796,801,805,810],{"id":791,"url":792,"label":793,"formula":794,"spacegroup":795,"year":425},14795,"\u002Fcif\u002F14795.cif","Finch 2001","Si Zr O4","I 41\u002Fa m d",{"id":797,"url":798,"label":799,"formula":800,"spacegroup":795,"year":425},14804,"\u002Fcif\u002F14804.cif","Kolesov 2001","Zr Si O4",{"id":802,"url":803,"label":804,"formula":800,"spacegroup":795,"year":377},14805,"\u002Fcif\u002F14805.cif","Hazen 1979",{"id":806,"url":807,"label":808,"formula":800,"spacegroup":795,"year":809},14813,"\u002Fcif\u002F14813.cif","Robinson 1971",1971,{"id":811,"url":812,"label":813,"formula":800,"spacegroup":795,"year":814},14814,"\u002Fcif\u002F14814.cif","Wyckoff 1927",1927,[816,817,818,819,820,821,822,823,824,825,826,827,828,829,830,831,832,833,834,835,836,837,838,839],"Açorita","Açorite","Azorit","Azorita","Azorite","Circone","Jargon de Ceylan","Meta-Zircon (of Leitz)","Œrsdedtita","Oesterdit","Oesterdita","Oesterdite","Örstedit","Örstettit","Ostranit","Ostranita","Ostranite","Polykrasilith","Tachyaphaltite","Turmali","Zircoi","Zirconite","Zircono","Zirkonit",[841,845,849,852,856,859,863,867,871,875,879,883,886,890,895,900,904,908,912,916,923,927,931,935,941,946,950,954,958,962,967,971,974,978,981,984,987,991,994,998,1002,1005,1009,1013,1017,1021,1025,1029,1033,1036,1040,1043,1046,1050,1054,1059,1062,1065,1068,1072,1076,1079,1082,1086,1090,1093,1097,1100,1103,1106,1110,1113,1116,1120,1124,1127,1131,1136,1139,1142,1145,1148,1151],{"lang":842,"names":843},"af",[844],"Sirkoon",{"lang":846,"names":847},"ar",[848],"زركون",{"lang":850,"names":851},"arz",[848],{"lang":853,"names":854},"be",[855],"цыркон",{"lang":857,"names":858},"be-tarask",[855],{"lang":860,"names":861},"be-x-old",[862],"Цыркон",{"lang":864,"names":865},"bg",[866],"Циркон",{"lang":868,"names":869},"bn",[870],"জিরকন",{"lang":872,"names":873},"ca",[874],"zircó",{"lang":876,"names":877},"cs",[878],"Zirkon",{"lang":880,"names":881},"da",[818,882],"zirkon",{"lang":884,"names":885},"de",[109,878],{"lang":887,"names":888},"el",[889],"Ζιρκόνιο",{"lang":891,"names":892},"eo",[893,894],"zirkono","ZrSiO4",{"lang":896,"names":897},"es",[898,899],"Circon","zircón",{"lang":901,"names":902},"et",[903],"tsirkoon",{"lang":905,"names":906},"eu",[907],"Zirkoi",{"lang":909,"names":910},"fa",[911],"زیرکن",{"lang":913,"names":914},"fi",[915],"zirkoni",{"lang":917,"names":918},"fr",[919,920,921,922,894],"10101-52-7","14940-68-2","Silicate 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زرقون",{"lang":1121,"names":1122},"uz",[1123],"Sirkon",{"lang":1125,"names":1126},"vi",[7],{"lang":1128,"names":1129},"wuu",[1130],"锆石",{"lang":1132,"names":1133},"zh",[1134,1135,1130],"皓石","鋯石",{"lang":1137,"names":1138},"zh-cn",[1130],{"lang":1140,"names":1141},"zh-hans",[1130],{"lang":1143,"names":1144},"zh-hant",[1135],{"lang":1146,"names":1147},"zh-hk",[1135],{"lang":1149,"names":1150},"zh-sg",[1130],{"lang":1152,"names":1153},"zh-tw",[1135],"Q178928",{"history":1156,"applications":1160},{"markdown":1157,"model_version":1158,"prompt_version":1159,"reviewed_at":11},"The name **zircon** carries a thousand-year journey across languages — and the mineral itself was sold and worn for centuries before chemistry caught up with what it actually was.\n\nThe medieval trail starts in 12th- and 13th-century lapidary texts. The forms *jargonce*, *giarconsia*, and *iargonça* appear in old French, Italian, and Spanish, naming a class of clear, fiery gemstones[1]. The old French *jargonce* sits at the root of them all. The common modern claim that the word ultimately descends from Persian *azargun* is, on present evidence, a later reconstruction with no surviving link to the medieval forms[1]. A separate gem-trade term, *hyacinth* — after the flower *hyacinthus* — covered the yellow, orange, and red varieties of the same species[2]. *Jargoon* survives today as a name for the pale, near-colourless stones[3].\n\nThe modern spelling settled in German mineralogy. Abraham Gottlob Werner used *Zirkon* in his 1780 translation of Axel Cronstedt's *Försök till en mineralogie*, glossing the older *Jargon* with a short editorial note[1]. German scientists then adopted the name; Martin Klaproth, Ludwig Emmerling, and others established *Zirkon* as the preferred spelling in scientific literature[1].\n\nThe decisive moment for the mineral's scientific identity came in 1789. Klaproth analysed a *jargoon* from the island of Ceylon — present-day Sri Lanka — and isolated a new earth he named *Zirkonerde*: the oxide of an unknown element, zirconium[4]. The mineral that had been bought and sold for centuries as an ornamental stone had given up a new element to chemistry. René Just Haüy carried the German form into French as *zircon* in his 1801 *Traité de minéralogie*, and the spelling has held ever since[1].\n\nA modern point of confusion is worth flagging. **Cubic zirconia** — the brilliant synthetic stone widely sold as a diamond substitute since the 1970s — is not zircon. It is zirconium dioxide (ZrO₂) grown in a cubic crystal form, while zircon is zirconium silicate (ZrSiO₄). The two share the element zirconium, isolated from zircon in 1789, and nothing else.","claude-opus-4-7","1.7.0",{"markdown":1161,"model_version":1158,"prompt_version":1159,"reviewed_at":11},"Zircon's most consequential modern use is not as a material but as a clock. Every grain of it is born with a small dose of uranium tucked into its crystal lattice — and once it cools, it refuses to let either the uranium or its lead daughter products escape. Geochronologists exploit that stubbornness to date the rocks that hosted the grain. Zircons are typically dated by uranium–lead (U–Pb), fission-track, and U+Th\u002FHe techniques[1]. The mineral is the backbone of the planet's deep-time chronology — and it holds the current record for the oldest known terrestrial material. Zircons from Jack Hills in the Narryer Gneiss terrane, Yilgarn craton, Western Australia, have yielded U–Pb ages up to 4.404 billion years[1]. Oxygen-isotope readings of some of those grains have been interpreted as evidence that liquid water existed on Earth's surface more than 4.3 billion years ago[1].\n\n### In industry\n\nThe industrial story rests on **zircon sand**. The mineral is recovered as a coproduct or byproduct of mining and processing heavy-mineral sands for the titanium minerals ilmenite and rutile[2]. Australia leads world production at 37%; South Africa, Africa's main producer, contributes another 30% of the world total[3].\n\nThe three major end uses of the sand are refractories, foundry sands (including investment casting), and ceramic opacification[2]. As an opacifier, the mineral is consumed mainly by the decorative ceramics industry[3].\n\nZircon is also the principal precursor to **zirconium dioxide** (ZrO₂), a refractory oxide with a melting point of 2,717 °C[3]. The same sand feeds the small zirconium-metal stream. Reactor designers pick zirconium alloys — the Zircaloys — for their low neutron-capture cross-section and resistance to corrosion in hot pressurised water[4]. The metal also serves chemical piping for corrosive environments, heat exchangers, and specialty alloys[2]. Zircon is the primary source of all hafnium as well. The two elements sit in the mineral at a ratio of about 50 to 1, and the hafnium must be separated out before the zirconium can be used in reactors[2].\n\n### As a gemstone\n\nCut and polished, zircon has been a gem for centuries. The mineral's high refractive index gives it a brilliance close to diamond's, and modern stones come in a wide colour palette. Common brown zircons can be transformed into colourless and blue zircons by heating to 800 to 1,000 °C[3]. The heat-treated blue is the most valuable; prior to World War II it was available in 15-to-25-carat sizes, but stones as large as 10 carats have become very scarce since[3]."]