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Since zircon grains initially crystallize at high temperatures (1800°C), the team assumed the zircon grains in this sandstone must have come from a rock crystallized from hot magma. Sometime after the rock cooled, they believe it was eroded and the zircons birthed in it were transported by water to Jack Hills. Colourless zircon is known for its brilliance and flashes of multicoloured light, called fire. These zircon properties are close enough to the properties of diamond to account for centuries of confusion between the two gems. Zircon occurs in an array of colours. Cupps, Ph.D., & Brian Thomas, M.S. Most people are familiar with man-made, diamond-like cubic zirconia (zirconium dioxide), but zirconium silicate, a less well-known form of zirconium, also exists in crystalline form. Called zircon for short, this mineral is found all over Earth's crust. Valley and his team recently published an article in Nature Geoscience.
Welcome to Zircon Corporation – bringing Silicon Valley to the world's toolboxes for over 40 years. We specialize in creating high-tech tools utilizing advanced sensor technologies that solve specific, but common, problems for homeowners and the professional trades of all types.
Our goal? Maximize reliable, confidence-inspiring performance in simple-to-use, affordable tools – and to ensure life-long performance in the hands of the user with unparalleled warranty and technical support.
Our success over the years, with many tens of millions of our tools successfully utilized on challenging jobs and projects at every level of difficulty, has made Zircon the Gold Standard for these products worldwide.
Since zircon grains initially crystallize at high temperatures (1800°C), the team assumed the zircon grains in this sandstone must have come from a rock crystallized from hot magma. Sometime after the rock cooled, they believe it was eroded and the zircons birthed in it were transported by water to Jack Hills. Colourless zircon is known for its brilliance and flashes of multicoloured light, called fire. These zircon properties are close enough to the properties of diamond to account for centuries of confusion between the two gems. Zircon occurs in an array of colours. Cupps, Ph.D., & Brian Thomas, M.S. Most people are familiar with man-made, diamond-like cubic zirconia (zirconium dioxide), but zirconium silicate, a less well-known form of zirconium, also exists in crystalline form. Called zircon for short, this mineral is found all over Earth's crust. Valley and his team recently published an article in Nature Geoscience.
Welcome to Zircon Corporation – bringing Silicon Valley to the world's toolboxes for over 40 years. We specialize in creating high-tech tools utilizing advanced sensor technologies that solve specific, but common, problems for homeowners and the professional trades of all types.
Our goal? Maximize reliable, confidence-inspiring performance in simple-to-use, affordable tools – and to ensure life-long performance in the hands of the user with unparalleled warranty and technical support.
Our success over the years, with many tens of millions of our tools successfully utilized on challenging jobs and projects at every level of difficulty, has made Zircon the Gold Standard for these products worldwide.
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AdvertismentGeneral Zircon Information | |||||||||||||||||||||||||||||||||||||||||
| Chemical Formula: | ZrSiO4 | ||||||||||||||||||||||||||||||||||||||||
| Composition: | Molecular Weight = 190.31 gm | ||||||||||||||||||||||||||||||||||||||||
| La,Ce,Pr,Nd,Sm, 3.78 % RE 4.41 % REE2O3 | |||||||||||||||||||||||||||||||||||||||||
| Hafnium 4.69 % Hf 5.53 % HfO2 | |||||||||||||||||||||||||||||||||||||||||
| Zirconium 43.14 % Zr 58.27 % ZrO2 | |||||||||||||||||||||||||||||||||||||||||
| Silicon 14.76 % Si 31.57 % SiO2 | |||||||||||||||||||||||||||||||||||||||||
| Oxygen 33.63 % O | |||||||||||||||||||||||||||||||||||||||||
| ______ ______ | |||||||||||||||||||||||||||||||||||||||||
| 100.00 % 99.79 % = TOTAL OXIDE | |||||||||||||||||||||||||||||||||||||||||
| Empirical Formula: | Zr0.9Hf0.05REE0.05SiO4 | ||||||||||||||||||||||||||||||||||||||||
| Environment: | Magmatic, metamorphic, pegmatitic, and alluvial rocks. Zicons are commonly slightly radioactive due to trace amounts of uranium and make prime, geochron age indicators. | ||||||||||||||||||||||||||||||||||||||||
| IMA Status: | Valid Species (Pre-IMA) Prehistoric | ||||||||||||||||||||||||||||||||||||||||
| Locality: | Laacher See, Niedermendig, Germany. Link to MinDat.org Location Data. | ||||||||||||||||||||||||||||||||||||||||
| Name Origin: | Named from its containing the element, zirconium; which was named from the Persian, zar 'gold' and gun = 'like' which translates 'like gold'. | ||||||||||||||||||||||||||||||||||||||||
| Name Pronunciation: | Zircon | ||||||||||||||||||||||||||||||||||||||||
| Synonym: | Cyrtolite - High U and metamict | ||||||||||||||||||||||||||||||||||||||||
| Hyacinth - orange red | |||||||||||||||||||||||||||||||||||||||||
| ICSD 71943 | |||||||||||||||||||||||||||||||||||||||||
| Jarcon - colorless | |||||||||||||||||||||||||||||||||||||||||
| Kochelite - mixture of fergusonite-(Y) and zircon | |||||||||||||||||||||||||||||||||||||||||
| Malacon | |||||||||||||||||||||||||||||||||||||||||
| PDF 6-266 | |||||||||||||||||||||||||||||||||||||||||
Zircon Image | |||||||||||||||||||||||||||||||||||||||||
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Zircon Crystallography | |||||||||||||||||||||||||||||||||||||||||
| Axial Ratios: | a:c = 1:0.90536 | ||||||||||||||||||||||||||||||||||||||||
| Cell Dimensions: | a = 6.604, c = 5.979, Z = 4; V = 260.76 Den(Calc)= 4.85 | ||||||||||||||||||||||||||||||||||||||||
| Crystal System: | Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd | ||||||||||||||||||||||||||||||||||||||||
| X Ray Diffraction: | By Intensity(I/Io): 3.3(1), 2.518(0.45), 4.43(0.45), | ||||||||||||||||||||||||||||||||||||||||
| Forms: Mouse |
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Physical Properties of Zircon | |||||||||||||||||||||||||||||||||||||||||
| Cleavage: | {110} Indistinct | ||||||||||||||||||||||||||||||||||||||||
| Color: | Brown, Reddish brown, Colorless, Gray, Green. | ||||||||||||||||||||||||||||||||||||||||
| Density: | 4.6 - 4.7, Average = 4.65 | ||||||||||||||||||||||||||||||||||||||||
| Diaphaneity: | Transparent to translucent to opaque | ||||||||||||||||||||||||||||||||||||||||
| Fracture: | Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | ||||||||||||||||||||||||||||||||||||||||
| Habit: | Crystalline - Fine - Occurs as well-formed fine sized crystals. | ||||||||||||||||||||||||||||||||||||||||
| Habit: | Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||||||||||||||||||||||||||||||||||||||||
| Habit: | Tabular - Form dimensions are thin in one direction. | ||||||||||||||||||||||||||||||||||||||||
| Hardness: | 7.5 - Garnet | ||||||||||||||||||||||||||||||||||||||||
| Luminescence: | Fluorescent, Short UV=yellow,green orange, Long UV=yellow, green orange. | ||||||||||||||||||||||||||||||||||||||||
| Luster: | Adamantine | ||||||||||||||||||||||||||||||||||||||||
| Streak: | white | ||||||||||||||||||||||||||||||||||||||||
Optical Properties of Zircon | |||||||||||||||||||||||||||||||||||||||||
| Dichroism (e): | colorless. | ||||||||||||||||||||||||||||||||||||||||
| Dichroism (w): | colorless. | ||||||||||||||||||||||||||||||||||||||||
| Gladstone-Dale: | CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.008 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1991,KPDmeas= 0.2076,KC= 0.2007 Ncalc = 1.92 - 1.97 | ||||||||||||||||||||||||||||||||||||||||
| Optical Data: | Uniaxial (-), e=1.92-1.96, w=1.967-2.015, bire=0.0470-0.0550. | ||||||||||||||||||||||||||||||||||||||||
Calculated Properties of Zircon | |||||||||||||||||||||||||||||||||||||||||
| Electron Density: | Bulk Density (Electron Density)=4.52 gm/cc note: Specific Gravity of Zircon =4.85 gm/cc. | ||||||||||||||||||||||||||||||||||||||||
| Fermion Index: | Fermion Index = 0.07 Boson Index = 0.93 | ||||||||||||||||||||||||||||||||||||||||
| Photoelectric: | PEZircon = 132.43 barns/electron U=PEZircon x relectron= 598.38 barns/cc. | ||||||||||||||||||||||||||||||||||||||||
| Radioactivity: | GRapi = 3,773.15 (Gamma Ray American Petroleum Institute Units) Zircon is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Weight of pure Zircon in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.85 gm/cc.* | ||||||||||||||||||||||||||||||||||||||||
Zircon Classification | |||||||||||||||||||||||||||||||||||||||||
| Dana Class: | 51.05.02.01(51)Nesosilicate Insular SiO4 Groups Only | ||||||||||||||||||||||||||||||||||||||||
| (51.05)with cations in >[6] coordination | |||||||||||||||||||||||||||||||||||||||||
| (51.05.02)Zircon group | |||||||||||||||||||||||||||||||||||||||||
| 09.AD.30 09 - SILICATES (Germanates) | |||||||||||||||||||||||||||||||||||||||||
| 09.A - Nesosilicates | |||||||||||||||||||||||||||||||||||||||||
| 09.AD -Nesosilicates without additional anions; | |||||||||||||||||||||||||||||||||||||||||
Other Zircon Information | |||||||||||||||||||||||||||||||||||||||||
| References: | NAME( Emsley91) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Heinrich65) | ||||||||||||||||||||||||||||||||||||||||
| See Also: | Links to other databases for Zircon : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Athena 6 - CalTech Mineral Spectroscopy 7 - EUROmin Project 8 - Ecole des Mines de Paris 9 - Franklin Minerals(Dunn) 10 - Franklin Minerals(Palache) 11 - GeoScienceWorld 12 - Glendale Community College 13 - Google Images 14 - Google Scholar 15 - Handbook of Mineralogy (MinSocAm) 16 - Handbook of Mineralogy (UofA) 17 - HyperPhysics 18 - MinDAT 19 - Mineral and Gemstone Kingdom 20 - Mineralienatlas (Deutsch) 21 - NSDL Reciprocal Net (JAVA) 22 - Online Mineral Museum 23 - Philatelic Mineralogy 24 - QUT Mineral Atlas 25 - Ruff.Info 26 - Scandinavian mineral gallery 27 - Tradeshop.com - The Rainbow of Gems 28 - UCLA - Petrography Thin-Sections 29 - University of Colorado - Mineral Structure Data 30 - University of Texas at Austin 31 - WWW-MINCRYST Search for Zircon using: Visit our Advertisers for Zircon : Ask about Zircon here : Print or Cut-and-Paste your Zircon Specimen Label here :
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