[Current Minerals] [Order Status] [Policies] [e-Bay Items] B & L Minerals, Fine Mineral specimens for sale for collectors of all levels General Gmelinite-Na Information(Na2,Ca)Al2Si4O12•6(H2O) |
Molecular Weight = 2,000.77 gm |
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Potassium 0.31 % K 0.38 % K2O |
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Sodium 8.74 % Na 11.79 % Na2O |
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Calcium 0.06 % Ca 0.08 % CaO |
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Aluminum 9.99 % Al 18.88 % Al2O3 |
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Silicon 23.15 % Si 49.52 % SiO2 |
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Hydrogen 2.17 % H 19.36 % H2O |
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Oxygen 55.58 % O |
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100.00 % 100.01 % = TOTAL OXIDE |
Na7.61Ca0.03K0.16Al7.41Si16.49O48•21.5(H2O) |
Alteration product of basalts. |
Valid Species (Pre-IMA) 1825 |
Montecchio Maggiore, Vicenza, Italy. Link to MinDat.org Location Data. |
Named after the German mineralogist and chemist, Christian Gottlob Gmelin (1792-1860) of Turbingen, Germany. Na modifier added by the zeolite nomenclature committee. |
Gmelinite-Na + Pronunciation |
Gmelinite |
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Gmelinite-Na Crystallographya:c = 1:0.73044 |
a = 13.756, c = 10.048, Z = 1; V = 1,646.63 Den(Calc)= 2.02 |
Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
By Intensity(I/Io): 4.1(1), 12.9(0.9), 2.96(0.8), |
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Mouse
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| Physical Properties of Gmelinite-Na{1010} Good, {0001} Parting |
White, Reddish white, Pink, Greenish white, Flesh red. |
2.03 - 2.17, Average = 2.09 |
Transparent to translucent |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
Crystalline - Coarse - Occurs as well-formed coarse sized crystals. |
Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces. |
4.5 - Between Fluorite and Apatite |
Vitreous - Dull |
white |
| Optical Properties of Gmelinite-NaCI meas= 0.009 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.03 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2382,KPDmeas= 0.2292,KC= 0.2312 Ncalc = 1.47 - 1.5 Uniaxial (+/-), a=1.474-1.481, b=1.476-1.494, bire=0.0020-0.0130. |
| Calculated Properties of Gmelinite-NaBulk Density (Electron Density)=2.13 gm/cc |
note: Specific Gravity of Gmelinite-Na =2.10 gm/cc. Fermion Index = 0.01 |
Boson Index = 0.99 PEGmelinite-Na = 1.40 barns/electron |
U=PEGmelinite-Na x relectron= 2.98 barns/cc. |
GRapi = 4.58 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Gmelinite-Na | Gmelinite-Na Classification77.01.02.06 (77)Tectosilicate Zeolite group |
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(77.01)true zeolites |
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(77.01.02)Chabazite and related species |
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09.GD.05 09 - SILICATES (Germanates) |
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09.G - Tektosilicates with Zeolitic H2O |
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09.GD -Chains of 6-membered rings – tabular zeolites |
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| Other Gmelinite-Na InformationNAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
Links to other databases for Gmelinite-Na : |
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Athena 5 - Google Images 6 - Google Scholar 7 - MinDAT 8 - MinMax(Deutsch) 9 - MinMax(English) 10 - Mineralienatlas (Deutsch) 11 - QUT Mineral Atlas 12 - Ruff.Info Search for Gmelinite-Na using: Visit our Advertisers for Gmelinite-Na : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Gmelinite-Na Mineral Data : Ask about Gmelinite-Na here : Print or Cut-and-Paste your Gmelinite-Na Specimen Label here :
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