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Zircon

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which show this characteristic. However, some zircons from Sri Lanka display only weak or no birefringence at all, and some other Sri Lanka stones may show clear birefringence in one place and little or none in another part of the same cut stone. Other gemstones also display birefringence, so while the presence of this characteristic may help distinguish a given zircon from a diamond or a CZ, it will not help distinguish it from, for example, a
553: 713: 598:. Zircon is fairly hard (with a Mohs hardness of 7.5) and chemically stable, and so is highly resistant to weathering. It also is resistant to heat, so that detrital zircon grains are sometimes preserved in igneous rocks formed from melted sediments. Its resistance to weathering, together with its relatively high specific gravity (4.68), make it an important component of the heavy mineral fraction of sandstones. 365: 38: 1042: 634: 705: 901:, and U+Th/He techniques. Imaging the cathodoluminescence emission from fast electrons can be used as a prescreening tool for high-resolution secondary-ion-mass spectrometry (SIMS) to image the zonation pattern and identify regions of interest for isotope analysis. This is done using an integrated cathodoluminescence and scanning electron microscope. 613:. Connected to internal radiation damage, these processes partially disrupt the crystal structure and partly explain the highly variable properties of zircon. As zircon becomes more and more modified by internal radiation damage, the density decreases, the crystal structure is compromised, and the color changes. 782:
The value of a zircon gem depends largely on its color, clarity, and size. Prior to World War II, blue zircons (the most valuable color) were available from many gemstone suppliers in sizes between 15 and 25 carats; since then, stones even as large as 10 carats have become very scarce, especially in
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which, on stones cut with a table and pavilion cuts (i.e., nearly all cut stones), can be seen as the apparent doubling-up of the latter when viewed through the former, and this characteristic can be used to distinguish them from diamonds and cubic zirconias (CZ) as well as soda-lime glass, none of
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Zircon occurs in many colors, including reddish brown, yellow, green, blue, gray, and colorless. The color of zircons can sometimes be changed by heat treatment. Common brown zircons can be transformed into colorless and blue zircons by heating to 800 to 1,000 Â°C (1,470 to 1,830 Â°F). In
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compositions of some of these zircons have been interpreted to indicate that more than 4.3 billion years ago there was already liquid water on the surface of the Earth. This interpretation is supported by additional trace element data, but is also the subject of debate. In 2015, "remains of
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Van Westrenen, Wim; Frank, Mark R.; Hanchar, John M.; Fei, Yingwei; Finch, Robert J.; Zha, Chang-Sheng (January 2004). "In situ determination of the compressibility of synthetic pure zircon (ZrSiO4) and the onset of the zircon-reidite phase transition".
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Structurally, zircon consists of parallel chains of alternating silica tetrahedra (silicon ions in fourfold coordination with oxygen ions) and zirconium ions, with the large zirconium ions in eightfold coordination with oxygen ions.
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Valley, JW; Cavosie, AJ; Ushikobo, T; Reinhardt; Lawrence, DF; Larson, DJ; Clifton, PH; Kelly, TF; Wilde, SA; Moser, DE; Spicuzza, MJ (2014). "Hadean age for a post-magma-ocean zircon confirmed by atom-probe tomography".
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Ushikubo, Takayuki; Kita, Noriko T.; Cavosie, Aaron J.; Wilde, Simon A.; Rudnick, Roberta L.; Valley, John W. (2008). "Lithium in Jack Hills zircons: Evidence for extensive weathering of Earth's earliest crust".
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igneous rocks. Due to its hardness, durability and chemical inertness, zircon persists in sedimentary deposits and is a common constituent of most sands. Zircon can occasionally be found as a trace mineral in
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Wilde, Simon A.; Valley, John W.; Peck, William H.; Graham, Colin M. (2001). "Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago".
1352:"Correlating planar microstructures in shocked zircon from the Vredefort Dome at multiple scales: Crystallographic modeling, external and internal imaging, and EBSD structural analysis" 1671:
Garver, John I.; Kamp, Peter J.J. (2002). "Integration of zircon color and zircon fission-track zonation patterns in orogenic belts: Application to the Southern Alps, New Zealand".
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Cavosie, A.J.; Valley, J.W.; Wilde, S.A. (2005). "Magmatic ήO in 4400–3900 Ma detrital zircons: A record of the alteration and recycling of crust in the Early Archean".
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Mojzsis, Stephen J.; Harrison, T. Mark; Pidgeon, Robert T. (2001). "Oxygen-isotope evidence from ancient zircons for liquid water at the Earth's surface 4,300 Myr ago".
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geological settings, the development of pink, red, and purple zircon occurs after hundreds of millions of years, if the crystal has sufficient trace elements to produce
752:(8-8.5). Zircons may sometimes lose their inherent color after long exposure to bright sunlight, which is unusual in a gemstone. It is immune to acid attack except by 1436: 2400:
Nemchin, A.; Pidgeon, R.; Whitehouse, M. (2006). "Re-evaluation of the origin and evolution of >4.2 Ga zircons from the Jack Hills metasedimentary rocks".
2502: 2064: 2021: 775:. If a zircon is cut with this axis perpendicular to its table, birefringence may be reduced to undetectable levels unless viewed with a jeweler's 786:
Synthetic zircons have been created in laboratories. They are occasionally used in jewellery such as earrings. Zircons are sometimes imitated by
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up to 1 wt%) and can be dated using several modern analytical techniques. Because zircons can survive geologic processes like
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and zirconium chemicals, including in nuclear fuel rods, catalytic fuel converters and in water and air purification systems.
1492: 645:, and has been known to be used in the decorative ceramics industry. It is also the principal precursor not only to metallic 944:" were found in 4.1-billion-year-old rocks in the Jack Hills of Western Australia. According to one of the researchers, "If 4021: 3241: 2315:
Valley, JW; Lackey, JS; Cavosie, AJ (2005). "4.4 billion years of crustal maturation: Oxygen isotopes in magmatic zircon".
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gemstone. The high specific gravity of zircon, however, can usually separate it from any other gem and is simple to test.
2995: 1810: 1587:"Computer modeling of Zircon (ZrSiO4)—Coffinite (USiO4) solid solutions and lead incorporation: Geological implications" 1745: 1254: 2810:
G. Vavra (1990). "On the kinematics of zircon growth and its petrogenetic significance: a cathodoluminescence study".
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rocks is about 0.1–0.3 mm (0.0039–0.0118 in), but they can also grow to sizes of several cm, especially in
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Other applications include use in refractories and foundry casting and a growing array of specialty applications as
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Australia leads the world in zircon mining, producing 37% of the world total and accounting for 40% of world EDR (
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is between that of quartz and topaz, at 7.5 on the 10 point scale, though below that of the similar manmade stone
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Zircon is a common accessory to trace mineral constituent of all kinds of igneous rocks, but particularly
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Hermann Köhler (1970). "Die Änderung der Zirkonmorphologie mit dem Differentiationsgrad eines Granits".
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K. Mezger & E. J. Krogstad (1997). "Interpretation of discordant U-Pb zircon ages: An evaluation".
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Davis, Sergio; Belonoshko, Anatoly; Rosengren, Anders; Duin, Adri; Johansson, Börje (January 1, 2010).
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G. Vavra (1994). "Systematics of internal zircon morphology in major Variscan granitoid types".
530:, which is the German adaptation of this word. Yellow, orange, and red zircon is also known as " 3996: 1688: 913: 839: 446: 158: 1911:
Report of the Seventy-Fourth Meeting of the British Association for the Advancement of Science
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ages up to 4.404 billion years, interpreted to be the age of crystallization, making them the
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Reddish brown, yellow, green, blue, gray, colorless; in thin section, colorless to pale brown
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Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C., eds. (1995).
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or other magnifying optics. The highest grade zircons are cut to minimize birefringence.
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This bracelet has zircon gemstones. The metal is zinc alloy base with silver coating.
650: 568: 502: 460: 2789: 2336: 2107: 1451: 1386: 827:, carbonatites, and lamprophyre, owing to the unusual magma genesis of these rocks. 3417: 3246: 3200: 3120: 2912: 2871: 2827: 2777: 2740: 2702: 2682: 2661: 2641: 2577: 2567: 2516: 2480: 2452: 2417: 2368: 2324: 2297: 2266: 2246: 2223: 2203: 2163: 2153: 1970: 1782: 1733: 1698: 1598: 1374: 1199: 1147: 1127: 865:
SEM-CL image of Zircon grain showing zonations and poly-cycles (core-rim structure)
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Erickson, Timmons M.; Cavosie, Aaron J.; Moser, Desmond E.; et al. (2013).
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On {101}. Crystals shocked by meteorite impact show polysynthetic twins on {112}
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A lustrous crystal of zircon perched on a tan matrix of calcite from the
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Valley, JW; Peck, WH; King, EM; Wilde, SA (2002). "A cool early Earth".
1856:(2d ed.). Englewood Cliffs, N.J.: Prentice-Hall. pp. 321–322. 1204: 1179: 3736: 3681: 3556: 3469: 3427: 3329: 3278: 3215: 3190: 3065: 2916: 2831: 2781: 1275: 1270: 909: 824: 771:
Also, birefringence depends on the cut of the stone in relation to its
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Optical microscope photograph; the length of the crystal is about 250
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Online articles and information on zircon history, lore, and research
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Zirconium silicate, a mineral belonging to the group of nesosilicates
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This article is about the mineral and gemstone. For other uses, see
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as a diamond. Zircon is one of the heaviest types of gemstone. Its
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is almost always present in quantities ranging from 1 to 4%. The
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Australia in association with the zirconium-hafnium minerals
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oxide with a melting point of 2,717 Â°C (4,923 Â°F).
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Cawood, P.A.; Hawkesworth, C.J.; Dhuime, B. (October 2012).
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Nielsen, Ralph (2000). "Zirconium and Zirconium Compounds".
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Zircon has played an important role during the evolution of
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close to 2,550 °C depend on Hf,Th,U,H,etc... concentrations.
3696: 3671: 3666: 3616: 3378: 2001: 945: 2640: 2082:"Heavy Minerals Mining in Africa – Titanium And Zirconium" 1893: 1852:
Blatt, Harvey; Middleton, Gerard; Murray, Raymond (1980).
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showing some of the range of substitution in zircon is (Zr
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10.1130/0091-7613(2002)030<0351:ACEE>2.0.CO;2
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Gunnar Ries (2001). "Zirkon als akzessorisches Mineral".
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Bell, Elizabeth A.; Boehnke, Patrick; Harrison, T. Mark;
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10.1130/0091-7613(2002)030<0351:ACEE>2.0.CO;2
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Transparent zircon is a well-known form of semi-precious
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The American Heritage Dictionary of the English Language
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World production trend of zirconium mineral concentrates
583:. Large zircon crystals are rare. Their average size in 186:
tabular to prismatic crystals, irregular grains, massive
2722: 2131: 1559:. New York: Oxford University Press. pp. 313–314. 1245:. Vol. II (Silica, Silicates). Chantilly, VA, US: 2610:
John M. Hanchar & Paul W. O. Hoskin, eds. (2003).
2541: 2236: 1627: 736:(1.92) it has sometimes been used as a substitute for 2644:& E. B. Watson (2000). "Pb diffusion in zircon". 2185: 422: 416: 410: 404: 2760:
J. P. Pupin (1980). "Zircon and Granite petrology".
1851: 1833: 1709: 2314: 2279: 1763:"Molecular dynamics simulation of zirconia melting" 401: 2434: 1480: 1271:"Zircon: Mineral information, data and localities" 522:, meaning "gold-hued". This word is changed into " 2535: 163:a = 6.607(1), c = 5.982(1) ; Z = 4 3978: 1584: 708:A pale blue zircon gemstone weighing 3.36 carats 2552:Proceedings of the National Academy of Sciences 1585:Jackson, Robert A.; Montenari, Michael (2019). 1580: 1578: 1576: 1325:Hurlbut, Cornelius S.; Klein, Cornelis (1985). 1320: 1318: 2709: 2672: 2496: 2494: 1730:Ullmann's Encyclopedia of Industrial Chemistry 756:and then only when ground into a fine powder. 2989: 2134:"Detrital zircon record and tectonic setting" 2022:"Dubbo Zirconia Project Fact Sheet June 2014" 1928:"Physical & Optical Properties of Zircon" 1487:. Oxford University Press. pp. 117–119. 1022:) all share the same crystal structure (X Y O 759:Most gem-grade zircons show a high degree of 2712:Neues Jahrbuch fĂŒr Mineralogie - Monatshefte 2673:A. N. Halliday (2001). "In the beginning
". 2007: 1908: 1573: 1324: 1315: 1098:Cluster of three compound crystals of zircon 830:Zircon forms economic concentrations within 740:, though it does not display quite the same 449:, and its corresponding chemical formula is 2796: 2759: 2491: 2996: 2982: 2500: 1870: 1670: 575:(as primary crystallization products), in 493:and has relatively high concentrations of 2897:Contributions to Mineralogy and Petrology 2812:Contributions to Mineralogy and Petrology 2762:Contributions to Mineralogy and Petrology 2581: 2571: 2317:Contributions to Mineralogy and Petrology 2167: 2157: 1786: 1692: 1522: 1430: 1203: 495:high field strength incompatible elements 2894: 2809: 2181: 2179: 1922: 1920: 1478: 1472: 932:so far dated on Earth. In addition, the 860: 801: 711: 703: 632: 551: 1727: 1721: 3979: 2616:Reviews in Mineralogy and Geochemistry 1876: 1639: 728:(between 4.2 and 4.86) and adamantine 2977: 2501:Borenstein, Seth (October 19, 2015). 2176: 2058:"The Mineral Sands Industry Factbook" 2019: 1995: 1917: 1839: 1715: 1633: 1554: 1263: 1229: 1227: 1225: 1223: 856: 1623:– via Elsevier Science Direct. 1180:"IMA–CNMNC approved mineral symbols" 1177: 1030:in the case of xenotime) as zircon. 783:the most desirable color varieties. 249:Vitreous to adamantine; greasy when 2437:Earth and Planetary Science Letters 2402:Earth and Planetary Science Letters 2353:Earth and Planetary Science Letters 1894:Oliver Cummings Farrington (1903). 959: 952:... then it could be common in the 873:. Zircons contain trace amounts of 13: 2602: 1507: 1220: 905:can identify the sediment source. 674:Zircon is one of the key minerals 14: 4038: 2933: 311:= 1.980–2.015, 1.75 when metamict 131:Ditetragonal dipyramidal (4/mmm) 2745:10.1111/j.1525-1314.1997.00008.x 2620:Mineralogical Society of America 1913:. John Murray. pp. 562–563. 1247:Mineralogical Society of America 1143:Heavy mineral sands ore deposits 1091: 1079: 1064: 1052: 1040: 832:heavy mineral sands ore deposits 641:Zircon is mainly consumed as an 567:of Earth. It occurs as a common 397: 363: 36: 2463: 2428: 2393: 2379: 2343: 2308: 2273: 2230: 2125: 2100: 2074: 2050: 2013: 1945: 1902: 1887: 1845: 1803: 1754: 1664: 1548: 1501: 851:economic demonstrated resources 628: 2725:Journal of Metamorphic Geology 1880:The Mineral Kingdom (Volume 1) 1457:Merriam-Webster.com Dictionary 1444: 1440:(5th ed.). HarperCollins. 1424: 1393: 1343: 1290: 1171: 1123:Cathodoluminescence microscope 609:content, some zircons undergo 1: 3003: 2666:10.1016/S0009-2541(00)00233-3 2513:Mindspark Interactive Network 2389:. Physorg.com. June 13, 2008. 1703:10.1016/S0040-1951(02)00054-9 1647:"Zircon gemstone information" 1591:Stratigraphy & Timescales 1536:. EncyclopĂŠdia Britannica Inc 1164: 889:, transport, even high-grade 797: 547: 441:and is a source of the metal 2108:"Zircons – Application Note" 1898:. A.W. Mumford. p. 109. 1072:Scanning electron microscope 948:arose relatively quickly on 7: 4022:Minerals in space group 141 2969:Zircon Industry Association 2940:Geochemistry of old zircons 1854:Origin of sedimentary rocks 1603:10.1016/bs.sats.2019.08.005 1515:Online Etymology Dictionary 1103: 1047:Crystal structure of zircon 903:Zircons in sedimentary rock 821:ultrapotassic igneous rocks 699: 637:Sand-sized grains of zircon 486:. Zircon precipitates from 10: 4045: 2457:10.1016/j.epsl.2005.04.028 2422:10.1016/j.epsl.2006.01.054 2373:10.1016/j.epsl.2008.05.032 1557:Introduction to mineralogy 1555:Nesse, William D. (2000). 1086:Unusual olive-green zircon 1033: 579:and as detrital grains in 515:The name derives from the 437:belonging to the group of 18: 3933: 3895: 3838: 3760: 3531: 3468: 3407: 3369: 3362: 3322: 3224: 3178: 3171: 3011: 2329:10.1007/s00410-005-0025-8 1877:Brauns, Reinhard (1912). 1788:10.2478/s11534-009-0152-3 1479:Stwertka, Albert (1996). 1133:Earliest known life forms 383: 355: 345: 335: 325: 315: 295: 287: 277: 267: 257: 243: 230: 220: 210: 200: 190: 180: 172: 167: 157: 140: 125: 113: 103: 93: 69: 59: 54: 35: 30: 2029:Alkane Resources Limited 2008:Hurlbut & Klein 1985 1738:10.1002/14356007.a28_543 685:Zircon is a part of the 563:Zircon is common in the 3498:Nickel silver (alpacca) 2956:(archived 7 April 2005) 2946:April 12, 2007, at the 2573:10.1073/pnas.1517557112 2449:2005E&PSL.235..663C 2414:2006E&PSL.244..218N 2365:2008E&PSL.272..666U 1932:Colored Gemstones Guide 1815:Mineral Commodities Ltd 1534:EncyclopĂŠdia Britannica 1483:A Guide to the Elements 724:, favored for its high 445:. Its chemical name is 21:Zircon (disambiguation) 1365:(1). Abstract: 53–65. 1243:Handbook of Mineralogy 1184:Mineralogical Magazine 914:Narryer Gneiss Terrane 866: 840:Dubbo, New South Wales 807: 732:. Because of its high 717: 709: 638: 560: 447:zirconium(IV) silicate 4007:Radioactive gemstones 3839:Other natural objects 1955:American Mineralogist 1909:L.J. Spencer (1905). 1896:Gems and Gem Minerals 1406:CollinsDictionary.com 1359:American Mineralogist 1298:"Zircon Mineral Data" 864: 805: 715: 707: 636: 555: 356:Other characteristics 273:Transparent to opaque 105:Strunz classification 4027:Luminescent minerals 4002:Refractory materials 3314:Wire wrapped jewelry 3294:RepoussĂ© and chasing 2961:GIA Gem Encyclopedia 2852:"A Cool Early Earth" 2038:on February 28, 2008 1975:10.2138/am-2004-0123 1379:10.2138/am.2013.4165 1327:Manual of Mineralogy 216:Conchoidal to uneven 4017:Tetragonal minerals 3856:Ebonite (vulcanite) 2909:1994CoMP..117..331V 2868:2002Geo....30..351V 2824:1990CoMP..106...90V 2774:1980CoMP...73..207P 2737:1997JMetG..15..127M 2658:2001ChGeo.172....5C 2564:2015PNAS..11214518B 2558:(47): 14518–14521. 2523:on October 23, 2015 2294:2002Geo....30..351V 2200:2001Natur.409..175W 2150:2012Geo....40..875C 2070:on August 18, 2016. 2020:Staff (June 2007). 1998:, pp. 313–314. 1967:2004AmMin..89..197V 1779:2010CEJPh...8..789D 1685:2002Tectp.349..203G 1371:2013AmMin..98...53E 1205:10.1180/mgm.2021.43 1196:2021MinM...85..291W 1178:Warr, L.N. (2021). 1059:Unit cell of zircon 689:to classify highly- 540:, whose name is of 534:", from the flower 3992:Zirconium minerals 3201:Jewellery designer 2917:10.1007/BF00307269 2832:10.1007/BF00306410 2782:10.1007/BF00381441 1821:on October 7, 2016 871:radiometric dating 867: 857:Radiometric dating 846:and armstrongite. 808: 718: 710: 678:by geologists for 639: 561: 288:Optical properties 80:zirconium silicate 3974: 3973: 3891: 3890: 3761:Organic gemstones 3358: 3357: 2954:Mineral galleries 2681:(6817): 144–145. 2473:Nature Geoscience 2245:(6817): 178–181. 2194:(6817): 175–178. 1636:, pp. 93–94. 1508:Harper, Douglas. 1494:978-0-19-508083-4 1460:. Merriam-Webster 1329:(20th ed.). 922:Western Australia 834:, within certain 651:zirconium dioxide 601:Because of their 581:sedimentary rocks 577:metamorphic rocks 569:accessory mineral 503:crystal structure 461:empirical formula 390: 389: 4034: 3418:Britannia silver 3367: 3366: 3176: 3175: 2998: 2991: 2984: 2975: 2974: 2928: 2891: 2889: 2887: 2882:on March 4, 2005 2878:. Archived from 2843: 2806: 2793: 2756: 2719: 2706: 2687:10.1038/35051685 2669: 2646:Chemical Geology 2637: 2596: 2595: 2585: 2575: 2539: 2533: 2532: 2530: 2528: 2519:. Archived from 2517:Associated Press 2498: 2489: 2488: 2485:10.1038/ngeo2075 2467: 2461: 2460: 2443:(3–4): 663–681. 2432: 2426: 2425: 2408:(1–2): 218–233. 2397: 2391: 2390: 2383: 2377: 2376: 2359:(3–4): 666–676. 2347: 2341: 2340: 2312: 2306: 2305: 2277: 2271: 2270: 2251:10.1038/35051557 2234: 2228: 2227: 2208:10.1038/35051550 2183: 2174: 2173: 2171: 2161: 2159:10.1130/G32945.1 2129: 2123: 2122: 2120: 2118: 2104: 2098: 2097: 2095: 2093: 2084:. Archived from 2078: 2072: 2071: 2069: 2063:. Archived from 2062: 2054: 2048: 2047: 2045: 2043: 2037: 2031:. Archived from 2026: 2017: 2011: 2005: 1999: 1993: 1987: 1986: 1949: 1943: 1942: 1940: 1938: 1924: 1915: 1914: 1906: 1900: 1899: 1891: 1885: 1884: 1874: 1868: 1867: 1849: 1843: 1837: 1831: 1830: 1828: 1826: 1817:. Archived from 1807: 1801: 1800: 1790: 1758: 1752: 1751: 1725: 1719: 1713: 1707: 1706: 1696: 1679:(1–4): 203–219. 1668: 1662: 1661: 1659: 1657: 1643: 1637: 1631: 1625: 1624: 1582: 1571: 1570: 1552: 1546: 1545: 1543: 1541: 1530:"Hyacinth (gem)" 1526: 1520: 1519: 1505: 1499: 1498: 1486: 1476: 1470: 1469: 1467: 1465: 1448: 1442: 1441: 1428: 1422: 1421: 1419: 1417: 1397: 1391: 1390: 1356: 1347: 1341: 1340: 1322: 1313: 1312: 1310: 1308: 1294: 1288: 1287: 1285: 1283: 1267: 1261: 1260: 1240: 1231: 1218: 1217: 1207: 1175: 1148:History of Earth 1128:Cool Early Earth 1119: 1095: 1083: 1068: 1056: 1044: 1021: 1010: 999: 984: 973: 960:Similar minerals 734:refractive index 726:specific gravity 660:), an important 659: 432: 431: 428: 427: 424: 419: 418: 415: 412: 409: 406: 403: 375:pleochroic halos 367: 297:Refractive index 279:Specific gravity 236: 89: 76: 75:(repeating unit) 40: 28: 27: 4044: 4043: 4037: 4036: 4035: 4033: 4032: 4031: 3977: 3976: 3975: 3970: 3929: 3887: 3876:Spondylus shell 3834: 3756: 3527: 3513:Stainless steel 3464: 3448:Sterling silver 3408:Precious metal 3403: 3371:Precious metals 3354: 3318: 3220: 3167: 3007: 3002: 2948:Wayback Machine 2936: 2931: 2885: 2883: 2634: 2605: 2603:Further reading 2600: 2599: 2540: 2536: 2526: 2524: 2511:. Yonkers, NY: 2499: 2492: 2468: 2464: 2433: 2429: 2398: 2394: 2385: 2384: 2380: 2348: 2344: 2313: 2309: 2278: 2274: 2235: 2231: 2184: 2177: 2144:(10): 875–878. 2130: 2126: 2116: 2114: 2106: 2105: 2101: 2091: 2089: 2088:on May 28, 2008 2080: 2079: 2075: 2067: 2060: 2056: 2055: 2051: 2041: 2039: 2035: 2024: 2018: 2014: 2006: 2002: 1994: 1990: 1950: 1946: 1936: 1934: 1926: 1925: 1918: 1907: 1903: 1892: 1888: 1875: 1871: 1864: 1850: 1846: 1838: 1834: 1824: 1822: 1809: 1808: 1804: 1759: 1755: 1748: 1726: 1722: 1714: 1710: 1694:10.1.1.570.3912 1669: 1665: 1655: 1653: 1645: 1644: 1640: 1632: 1628: 1613: 1583: 1574: 1567: 1553: 1549: 1539: 1537: 1528: 1527: 1523: 1506: 1502: 1495: 1477: 1473: 1463: 1461: 1450: 1449: 1445: 1429: 1425: 1415: 1413: 1399: 1398: 1394: 1354: 1348: 1344: 1337: 1323: 1316: 1306: 1304: 1296: 1295: 1291: 1281: 1279: 1269: 1268: 1264: 1257: 1238: 1232: 1221: 1176: 1172: 1167: 1162: 1118: 1114: 1106: 1099: 1096: 1087: 1084: 1075: 1074:image of zircon 1069: 1060: 1057: 1048: 1045: 1036: 1029: 1025: 1020: 1016: 1009: 1005: 998: 994: 983: 979: 972: 968: 962: 930:oldest minerals 924:, have yielded 859: 800: 702: 658: 654: 631: 611:metamictization 550: 497:. For example, 485: 481: 477: 473: 466: 457: 421: 400: 396: 378: 372: 321:ÎŽ = 0.047–0.055 310: 306: 304: 234: 206:{110} and {111} 152: 136:: (4/m 2/m 2/m) 132: 87: 83: 74: 73: 50: 44:Gilgit District 24: 17: 12: 11: 5: 4042: 4041: 4030: 4029: 4024: 4019: 4014: 4009: 4004: 3999: 3994: 3989: 3972: 3971: 3969: 3968: 3963: 3958: 3953: 3948: 3943: 3938: 3937:Related topics 3934: 3931: 3930: 3928: 3927: 3922: 3917: 3911: 3905: 3899: 3897: 3893: 3892: 3889: 3888: 3886: 3885: 3880: 3879: 3878: 3868: 3863: 3858: 3853: 3848: 3842: 3840: 3836: 3835: 3833: 3832: 3827: 3822: 3817: 3812: 3807: 3802: 3801: 3800: 3795: 3785: 3780: 3775: 3770: 3764: 3762: 3758: 3757: 3755: 3754: 3749: 3744: 3739: 3734: 3729: 3724: 3719: 3714: 3709: 3704: 3699: 3694: 3684: 3679: 3674: 3669: 3664: 3659: 3654: 3649: 3644: 3639: 3634: 3629: 3624: 3619: 3614: 3609: 3604: 3599: 3594: 3589: 3584: 3579: 3574: 3569: 3559: 3554: 3549: 3544: 3538: 3536: 3529: 3528: 3526: 3525: 3520: 3515: 3510: 3505: 3500: 3495: 3490: 3485: 3480: 3474: 3472: 3466: 3465: 3463: 3462: 3457: 3456: 3455: 3445: 3440: 3435: 3430: 3425: 3420: 3414: 3412: 3405: 3404: 3402: 3401: 3396: 3391: 3386: 3381: 3375: 3373: 3364: 3360: 3359: 3356: 3355: 3353: 3352: 3347: 3342: 3337: 3332: 3326: 3324: 3320: 3319: 3317: 3316: 3311: 3309:Wire sculpture 3306: 3301: 3296: 3291: 3286: 3281: 3276: 3271: 3266: 3261: 3256: 3255: 3254: 3249: 3244: 3234: 3228: 3226: 3222: 3221: 3219: 3218: 3213: 3208: 3203: 3198: 3193: 3188: 3182: 3180: 3173: 3169: 3168: 3166: 3165: 3164: 3163: 3158: 3148: 3143: 3138: 3133: 3128: 3123: 3118: 3113: 3108: 3103: 3098: 3093: 3088: 3083: 3078: 3073: 3068: 3063: 3058: 3053: 3048: 3043: 3038: 3033: 3028: 3023: 3017: 3015: 3009: 3008: 3001: 3000: 2993: 2986: 2978: 2972: 2971: 2966: 2957: 2951: 2935: 2934:External links 2932: 2930: 2929: 2903:(4): 331–344. 2892: 2862:(4): 351–354. 2848:John W. Valley 2844: 2807: 2794: 2768:(3): 207–220. 2757: 2731:(1): 127–140. 2720: 2707: 2670: 2642:D. J. Cherniak 2638: 2632: 2606: 2604: 2601: 2598: 2597: 2534: 2490: 2479:(3): 219–223. 2462: 2427: 2392: 2378: 2342: 2307: 2288:(4): 351–354. 2272: 2229: 2175: 2124: 2099: 2073: 2049: 2012: 2010:, p. 454. 2000: 1988: 1961:(1): 197–203. 1944: 1916: 1901: 1886: 1869: 1862: 1844: 1842:, p. 314. 1832: 1802: 1753: 1747:978-3527306732 1746: 1720: 1718:, p. 313. 1708: 1673:Tectonophysics 1663: 1651:www.gemdat.org 1638: 1626: 1611: 1572: 1565: 1547: 1521: 1500: 1493: 1471: 1443: 1423: 1392: 1342: 1335: 1314: 1289: 1262: 1256:978-0962209710 1255: 1219: 1190:(3): 291–320. 1169: 1168: 1166: 1163: 1161: 1160: 1158:Cerium anomaly 1155: 1150: 1145: 1140: 1135: 1130: 1125: 1120: 1116: 1107: 1105: 1102: 1101: 1100: 1097: 1090: 1088: 1085: 1078: 1076: 1070: 1063: 1061: 1058: 1051: 1049: 1046: 1039: 1035: 1032: 1027: 1023: 1018: 1007: 996: 991:schiavinatoite 981: 970: 961: 958: 918:Yilgarn Craton 858: 855: 799: 796: 790:and synthetic 750:cubic zirconia 701: 698: 656: 630: 627: 549: 546: 510:crystal system 483: 479: 475: 471: 464: 455: 388: 387: 385: 381: 380: 357: 353: 352: 349: 343: 342: 339: 333: 332: 329: 323: 322: 319: 313: 312: 308: 305:= 1.925–1.961 302: 299: 293: 292: 289: 285: 284: 281: 275: 274: 271: 265: 264: 261: 255: 254: 247: 241: 240: 237: 228: 227: 224: 218: 217: 214: 208: 207: 204: 198: 197: 194: 188: 187: 184: 178: 177: 174: 170: 169: 168:Identification 165: 164: 161: 155: 154: 153:/amd (No. 141) 150: 144: 138: 137: 129: 123: 122: 117: 115:Crystal system 111: 110: 107: 101: 100: 97: 91: 90: 85: 77: 67: 66: 61: 57: 56: 52: 51: 41: 33: 32: 15: 9: 6: 4: 3: 2: 4040: 4039: 4028: 4025: 4023: 4020: 4018: 4015: 4013: 4010: 4008: 4005: 4003: 4000: 3998: 3997:Nesosilicates 3995: 3993: 3990: 3988: 3985: 3984: 3982: 3967: 3964: 3962: 3959: 3957: 3954: 3952: 3949: 3947: 3944: 3942: 3941:Body piercing 3939: 3936: 3935: 3932: 3926: 3923: 3921: 3918: 3915: 3912: 3909: 3906: 3904: 3901: 3900: 3898: 3894: 3884: 3881: 3877: 3874: 3873: 3872: 3869: 3867: 3864: 3862: 3859: 3857: 3854: 3852: 3849: 3847: 3844: 3843: 3841: 3837: 3831: 3830:Tortoiseshell 3828: 3826: 3823: 3821: 3818: 3816: 3813: 3811: 3808: 3806: 3803: 3799: 3796: 3794: 3791: 3790: 3789: 3786: 3784: 3781: 3779: 3776: 3774: 3771: 3769: 3766: 3765: 3763: 3759: 3753: 3750: 3748: 3745: 3743: 3740: 3738: 3735: 3733: 3730: 3728: 3725: 3723: 3720: 3718: 3715: 3713: 3710: 3708: 3705: 3703: 3700: 3698: 3695: 3692: 3688: 3685: 3683: 3680: 3678: 3675: 3673: 3670: 3668: 3665: 3663: 3660: 3658: 3655: 3653: 3650: 3648: 3645: 3643: 3640: 3638: 3635: 3633: 3630: 3628: 3625: 3623: 3620: 3618: 3615: 3613: 3610: 3608: 3605: 3603: 3600: 3598: 3595: 3593: 3590: 3588: 3585: 3583: 3580: 3578: 3575: 3573: 3570: 3567: 3563: 3560: 3558: 3555: 3553: 3550: 3548: 3545: 3543: 3540: 3539: 3537: 3535: 3530: 3524: 3521: 3519: 3516: 3514: 3511: 3509: 3506: 3504: 3501: 3499: 3496: 3494: 3491: 3489: 3486: 3484: 3481: 3479: 3476: 3475: 3473: 3471: 3467: 3461: 3458: 3454: 3451: 3450: 3449: 3446: 3444: 3441: 3439: 3436: 3434: 3431: 3429: 3426: 3424: 3421: 3419: 3416: 3415: 3413: 3411: 3406: 3400: 3397: 3395: 3392: 3390: 3387: 3385: 3382: 3380: 3377: 3376: 3374: 3372: 3368: 3365: 3361: 3351: 3348: 3346: 3343: 3341: 3338: 3336: 3333: 3331: 3328: 3327: 3325: 3321: 3315: 3312: 3310: 3307: 3305: 3302: 3300: 3297: 3295: 3292: 3290: 3287: 3285: 3282: 3280: 3277: 3275: 3272: 3270: 3267: 3265: 3262: 3260: 3257: 3253: 3250: 3248: 3245: 3243: 3240: 3239: 3238: 3235: 3233: 3230: 3229: 3227: 3223: 3217: 3214: 3212: 3209: 3207: 3204: 3202: 3199: 3197: 3194: 3192: 3189: 3187: 3186:Bench jeweler 3184: 3183: 3181: 3177: 3174: 3170: 3162: 3159: 3157: 3154: 3153: 3152: 3149: 3147: 3144: 3142: 3139: 3137: 3134: 3132: 3129: 3127: 3124: 3122: 3119: 3117: 3114: 3112: 3109: 3107: 3104: 3102: 3099: 3097: 3094: 3092: 3089: 3087: 3084: 3082: 3079: 3077: 3074: 3072: 3069: 3067: 3064: 3062: 3059: 3057: 3054: 3052: 3049: 3047: 3044: 3042: 3039: 3037: 3034: 3032: 3029: 3027: 3024: 3022: 3019: 3018: 3016: 3014: 3010: 3006: 2999: 2994: 2992: 2987: 2985: 2980: 2979: 2976: 2970: 2967: 2964: 2962: 2958: 2955: 2952: 2949: 2945: 2941: 2938: 2937: 2926: 2922: 2918: 2914: 2910: 2906: 2902: 2898: 2893: 2881: 2877: 2873: 2869: 2865: 2861: 2857: 2853: 2849: 2845: 2841: 2837: 2833: 2829: 2825: 2821: 2817: 2813: 2808: 2804: 2800: 2795: 2791: 2787: 2783: 2779: 2775: 2771: 2767: 2763: 2758: 2754: 2750: 2746: 2742: 2738: 2734: 2730: 2726: 2721: 2717: 2713: 2708: 2704: 2700: 2696: 2692: 2688: 2684: 2680: 2676: 2671: 2667: 2663: 2659: 2655: 2652:(1–2): 5–24. 2651: 2647: 2643: 2639: 2635: 2633:0-939950-65-0 2629: 2625: 2621: 2617: 2613: 2608: 2607: 2593: 2589: 2584: 2579: 2574: 2569: 2565: 2561: 2557: 2553: 2549: 2545: 2544:Mao, Wendy L. 2538: 2522: 2518: 2514: 2510: 2509: 2504: 2497: 2495: 2486: 2482: 2478: 2474: 2466: 2458: 2454: 2450: 2446: 2442: 2438: 2431: 2423: 2419: 2415: 2411: 2407: 2403: 2396: 2388: 2382: 2374: 2370: 2366: 2362: 2358: 2354: 2346: 2338: 2334: 2330: 2326: 2322: 2318: 2311: 2303: 2299: 2295: 2291: 2287: 2283: 2276: 2268: 2264: 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1368: 1364: 1360: 1353: 1346: 1338: 1336:0-471-80580-7 1332: 1328: 1321: 1319: 1303: 1299: 1293: 1278: 1277: 1272: 1266: 1258: 1252: 1248: 1244: 1237: 1230: 1228: 1226: 1224: 1215: 1211: 1206: 1201: 1197: 1193: 1189: 1185: 1181: 1174: 1170: 1159: 1156: 1154: 1151: 1149: 1146: 1144: 1141: 1139: 1138:Hadean zircon 1136: 1134: 1131: 1129: 1126: 1124: 1121: 1112: 1109: 1108: 1094: 1089: 1082: 1077: 1073: 1067: 1062: 1055: 1050: 1043: 1038: 1037: 1031: 1014: 1003: 992: 988: 977: 966: 957: 955: 951: 947: 943: 938: 935: 931: 927: 923: 919: 915: 911: 908:Zircons from 906: 904: 900: 899:fission-track 896: 892: 888: 884: 880: 876: 872: 863: 854: 852: 847: 845: 841: 837: 833: 828: 826: 822: 817: 813: 804: 795: 793: 789: 784: 780: 778: 774: 769: 767: 762: 761:birefringence 757: 755: 754:sulfuric acid 751: 747: 746:Mohs hardness 743: 742:play of color 739: 735: 731: 727: 723: 714: 706: 697: 695: 692: 688: 683: 681: 680:geochronology 677: 672: 670: 665: 663: 652: 648: 644: 635: 626: 622: 620: 619:color centers 614: 612: 608: 604: 599: 597: 593: 590: 586: 582: 578: 574: 573:igneous rocks 570: 566: 559: 554: 545: 543: 542:Ancient Greek 539: 538: 533: 529: 525: 521: 518: 513: 511: 508: 505:of zircon is 504: 500: 496: 492: 489: 470: 462: 458: 452: 448: 444: 440: 439:nesosilicates 436: 430: 394: 386: 382: 376: 370: 366: 361: 358: 354: 350: 348: 344: 340: 338: 334: 330: 328: 324: 320: 318: 317:Birefringence 314: 300: 298: 294: 290: 286: 282: 280: 276: 272: 270: 266: 262: 260: 256: 252: 248: 246: 242: 238: 233: 229: 225: 223: 219: 215: 213: 209: 205: 203: 199: 195: 193: 189: 185: 183: 182:Crystal habit 179: 175: 171: 166: 162: 160: 156: 148: 145: 143: 139: 135: 130: 128: 127:Crystal class 124: 121: 118: 116: 112: 108: 106: 102: 98: 96: 92: 81: 78: 72: 68: 65: 64:Nesosilicates 62: 58: 53: 49: 45: 39: 34: 29: 26: 22: 3966:Wearable art 3961:Phaleristics 3956:Metalworking 3861:Gutta-percha 3751: 3637:Lapis lazuli 3423:Colored gold 3304:Stonesetting 2960: 2900: 2896: 2884:. Retrieved 2880:the original 2859: 2855: 2818:(1): 90–99. 2815: 2811: 2802: 2798: 2765: 2761: 2728: 2724: 2715: 2711: 2678: 2674: 2649: 2645: 2623: 2622:monograph). 2615: 2555: 2551: 2537: 2525:. Retrieved 2521:the original 2506: 2476: 2472: 2465: 2440: 2436: 2430: 2405: 2401: 2395: 2381: 2356: 2352: 2345: 2320: 2316: 2310: 2285: 2281: 2275: 2242: 2238: 2232: 2191: 2187: 2141: 2137: 2127: 2117:February 10, 2115:. Retrieved 2111: 2102: 2090:. Retrieved 2086:the original 2076: 2065:the original 2052: 2040:. Retrieved 2033:the original 2028: 2015: 2003: 1991: 1958: 1954: 1947: 1935:. Retrieved 1931: 1910: 1904: 1895: 1889: 1879: 1872: 1853: 1847: 1835: 1823:. Retrieved 1819:the original 1814: 1805: 1770: 1767:Open Physics 1766: 1756: 1729: 1723: 1711: 1676: 1672: 1666: 1654:. Retrieved 1650: 1641: 1629: 1594: 1590: 1556: 1550: 1538:. Retrieved 1533: 1524: 1513: 1503: 1482: 1474: 1462:. Retrieved 1455: 1446: 1435: 1426: 1414:. Retrieved 1404: 1395: 1362: 1358: 1345: 1326: 1305:. 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Retrieved 1274: 1265: 1242: 1187: 1183: 1173: 963: 907: 895:uranium-lead 891:metamorphism 868: 848: 829: 809: 785: 781: 773:optical axis 770: 758: 719: 684: 673: 666: 640: 629:Applications 623: 615: 600: 596:carbonatites 562: 535: 527: 519: 514: 392: 391: 379:Relief: high 291:Uniaxial (+) 146: 25: 3903:Art jewelry 3727:Tiger's eye 3632:Labradorite 3582:Chrysocolla 3577:Chrysoberyl 3493:Mokume-gane 3470:Base metals 3242:centrifugal 3211:Silversmith 3086:FerronniĂšre 3036:Belt buckle 3031:Belly chain 2323:: 561–580. 1937:October 19, 1597:: 217–227. 1307:October 19, 1282:October 19, 1111:Baddeleyite 942:biotic life 825:kimberlites 369:radioactive 360:Fluorescent 327:Pleochroism 269:Diaphaneity 142:Space group 3981:Categories 3737:Tourmaline 3682:Prasiolite 3557:Aventurine 3428:Crown gold 3330:Draw plate 3279:Metal clay 3216:Watchmaker 3206:Lapidarist 3191:Clockmaker 3066:Collar pin 3061:Chatelaine 2805:: 381–383. 2799:Aufschluss 2718:: 405–420. 2527:October 8, 2169:10023/3575 1996:Nesse 2000 1863:0136427103 1840:Nesse 2000 1811:"Products" 1773:(5): 789. 1716:Nesse 2000 1634:Nesse 2000 1540:October 7, 1302:Webmineral 1276:Mindat.org 1165:References 910:Jack Hills 836:pegmatites 798:Occurrence 662:refractory 592:pegmatites 548:Properties 537:hyacinthus 507:tetragonal 384:References 347:Solubility 337:Fusibility 232:Mohs scale 134:H-M symbol 120:Tetragonal 95:IMA symbol 4012:Gemstones 3883:Toadstone 3820:Operculum 3747:Variscite 3742:Turquoise 3722:Tanzanite 3657:Moonstone 3652:Marcasite 3647:Malachite 3572:Carnelian 3547:Amazonite 3534:gemstones 3508:Pinchbeck 3453:Argentium 3443:Shibuichi 3384:Palladium 3363:Materials 3299:Soldering 3289:Polishing 3264:Engraving 3259:Enameling 3225:Processes 3196:Goldsmith 3131:Tie chain 3106:Neck ring 3096:Lapel pin 3005:Jewellery 2925:128459636 2886:April 11, 2840:140566387 2753:129846813 2092:August 8, 1983:102001496 1825:August 8, 1797:120967147 1689:CiteSeerX 1656:April 29, 1621:210256739 1464:April 29, 1416:April 29, 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532:hyacinth 488:silicate 251:metamict 235:hardness 222:Tenacity 212:Fracture 202:Cleavage 192:Twinning 60:Category 48:Pakistan 3946:Fashion 3920:Finding 3768:Abalone 3677:Peridot 3642:Larimar 3627:Kyanite 3612:Howlite 3597:Emerald 3587:Diamond 3460:Tumbaga 3438:Shakudƍ 3394:Rhodium 3345:Mandrel 3284:Plating 3237:Casting 3232:Carving 3141:Tie pin 3116:Pendant 3091:Genital 3081:Earring 2905:Bibcode 2864:Bibcode 2856:Geology 2820:Bibcode 2770:Bibcode 2733:Bibcode 2703:4339433 2654:Bibcode 2583:4664351 2560:Bibcode 2445:Bibcode 2410:Bibcode 2361:Bibcode 2290:Bibcode 2282:Geology 2267:2819082 2224:4319774 2196:Bibcode 2146:Bibcode 2138:Geology 1963:Bibcode 1775:Bibcode 1681:Bibcode 1367:Bibcode 1192:Bibcode 1034:Gallery 1026:, X Y O 1011:), and 1002:thorite 912:in the 887:erosion 879:thorium 875:uranium 812:granite 738:diamond 607:thorium 603:uranium 585:granite 524:jargoon 517:Persian 499:hafnium 435:mineral 433:) is a 283:4.6–4.7 226:Brittle 109:9.AD.30 71:Formula 55:General 3987:Zircon 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Index

Zircon (disambiguation)

Gilgit District
Pakistan
Nesosilicates
Formula
zirconium silicate
IMA symbol
Strunz classification
Crystal system
Tetragonal
Crystal class
H-M symbol
Space group
Unit cell
Crystal habit
Twinning
Cleavage
Fracture
Tenacity
Mohs scale
Luster
metamict
Streak
Diaphaneity
Specific gravity
Refractive index
Birefringence
Pleochroism
Fusibility

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