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Gaidonnayite Mineral Data + |
General Gaidonnayite Information |
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| Na2ZrSi3O9·2(H2O) | |||
| Molecular Weight = 401.49 gm | |||
| Sodium 11.45 % Na 15.44 % Na2O | |||
| Zirconium 22.72 % Zr 30.69 % ZrO2 | |||
| Silicon 20.99 % Si 44.90 % SiO2 | |||
| Hydrogen 1.00 % H 8.97 % H2O | |||
| Oxygen 43.84 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Na2ZrSi3O9·2(H2O) | |||
| Altered pegmatites and miarolitic cavites in nepheline syenite. | |||
| Approved IMA 1974 | |||
| Mt St. Hilaire, Quebec, Canada. Link to MinDat.org Location Data. | |||
| Named for Gabrielle Hamburger Donnay (1920-1987), crystallographer and mineralogist, McGill University. | |||
| ICSD 201846 | |||
| IMA1973-003 | |||
| PDF 26-1387 | |||
Gaidonnayite Image | |||
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Gaidonnayite Crystallography |
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| a:b:c =0.9157:1:0.5219 | |||
| a = 11.74, b = 12.82, c = 6.691, Z = 4; V = 1,007.04 Den(Calc)= 2.65 | |||
| Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P 21nb | |||
| By Intensity(I/Io): 3.124(1), 5.84(0.8), 5.93(0.8), | |||
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Mouse |
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Physical Properties of Gaidonnayite |
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| None | |||
| Colorless, White, Light lilac. | |||
| 2.67 | |||
| Transparent | |||
| Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | |||
| 5 - Apatite | |||
| Fluorescent, Short UV=bright green, Long UV=bright green. | |||
| white | |||
Optical Properties of Gaidonnayite |
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| CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.018 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2219,KPDmeas= 0.2202,KC= 0.218 |
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| Biaxial (+), a=1.573, b=1.592, g=1.599, bire=0.0260 | |||
| colorless. | |||
| colorless. | |||
| colorless. | |||
Calculated Properties of Gaidonnayite |
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relectron=2.61 gm/cc |
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| Fermion Index = 0.0355 Boson Index = 0.9645 |
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PEGaidonnayite = 30.94 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Gaidonnayite is Not Radioactive |
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Gaidonnayite Classification |
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| 59.2.2.3 (59)Cyclosilicate Three-Membered Rings | |||
| (59.2)hydrated | |||
| (59.2.2)Catapleiite group | |||
| VIII/E.04-30 VIII - Silicates | |||
| VIII/E - Cyklosilicates, triplet rings [Si3O9]6- | |||
| VIII/E.04 - Catapleiite - Komkovite series | |||
Other Gaidonnayite Information |
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| NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Gaidonnayite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Athena 5 - EUROmin Project 6 - Ecole des Mines de Paris 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - MinMax(Deutsch) 13 - MinMax(English) 14 - Mineralienatlas (Deutsch) 15 - QUT Mineral Atlas 16 - Ruff.Info 17 - WWW-MINCRYST Search for Gaidonnayite using: Visit our Advertisers for Gaidonnayite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Gaidonnayite Mineral Data : Ask about Gaidonnayite here : Print or Cut-and-Paste your Gaidonnayite Specimen Label here :
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