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Gottardiite Mineral Data |
General Gottardiite Information |
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Na3Mg3Ca5Al19Si117O272•93(H2O) | |
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Molecular Weight = 10168.18 gm | |
Sodium 0.68 % Na 0.91 % Na2O | ||
Calcium 1.97 % Ca 2.76 % CaO | ||
Magnesium 0.72 % Mg 1.19 % MgO | ||
Aluminum 5.04 % Al 9.53 % Al2O3 | ||
Silicon 32.32 % Si 69.14 % SiO2 | ||
Hydrogen 1.84 % H 16.48 % H2O | ||
Oxygen 57.43 % O | ||
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100.00 % 100.00 % = TOTAL OXIDE | ||
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Na3Mg3Ca5Al19Si117O272•93(H2O) | |
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Approved IMA 1996 (Dana # Added) | |
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Mt. Adamson, Victoria Land, Antarctica. Link to MinDat.org Location Data. | |
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Named after Professor Glauco Gottardi (1928-1988), University of Modena, in recognition of his pioneering work on the structure and crystal chemistry of natural zeolites. | |
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Gottardiite + Pronunciation ![]() |
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ICSD 81390 | |
IMA1994-054 | ||
PDF 48-1814 | ||
Gottardiite Crystallography |
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a:b:c =0.5432:1:0.8987 | |
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a = 13.698, b = 25.213, c = 22.66, Z = 1; V = 7,826.03 Den(Calc)= 2.16 | |
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Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mca | |
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By Intensity(I/Io): 11.34(1), 4.37(0.79), 4.01(0.57), | |
Physical Properties of Gottardiite |
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{001} Perfect | |
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Colorless. | |
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2.14 | |
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Transparent | |
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Brittle - Generally displayed by glasses and most non-metallic minerals. | |
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Vitreous (Glassy) | |
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white | |
Optical Properties of Gottardiite |
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CI meas= 0.015 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2239,KPDmeas= 0.226,KC= 0.2294 Ncalc = 1.49 - 1.5 |
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Biaxial (-), a=1.48, b=1.485, g=1.486, bire=0.0060 | |
Calculated Properties of Gottardiite |
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Bulk Density (Electron Density)=2.17 gm/cc note: Specific Gravity of Gottardiite =2.14 gm/cc. |
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Fermion Index = 0.01 Boson Index = 0.99 |
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PEGottardiite = 1.69 barns/electron U=PEGottardiite x rElectron Density= 3.67 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Gottardiite is Not Radioactive |
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Gottardiite Classification |
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77.01.06.08 (77)Tectosilicate Zeolite group | |
(77.01)true zeolites | ||
(77.01.06)Mordenite and related species | ||
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09.GF.10 09 - SILICATES (Germanates) | |
09.G - Tektosilicates with Zeolitic H2O | ||
09.GF -Other Rare Zeolites | ||
Other Gottardiite Information |
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NAME( CanMin, v 35, p 1584) PHYS. PROP.(Eur. J. Min.,Vol.8,p687-693,1996) OPTIC PROP.(Eur. J. Min.,Vol.8,p687-693,1996) | |
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Links to other databases for Gottardiite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Gottardiite using: Visit our Advertisers for Gottardiite : Ask about Gottardiite here : Print or Cut-and-Paste your Gottardiite Specimen Label here :
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