| Magnesiotaaffeite-2N2S Mineral Data |
General Magnesiotaaffeite-2N2S Information |
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| Mg3Al8BeO16 | |||
| Molecular Weight = 553.77 gm | |||
| Magnesium 13.17 % Mg 21.83 % MgO | |||
| Beryllium 1.63 % Be 4.52 % BeO | |||
| Aluminum 38.98 % Al 73.65 % Al2O3 | |||
| Oxygen 46.23 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Mg3Al8BeO16 | |||
| Found in the gem gravels of Sri Lanka. | |||
| Approved IMA 1982 | |||
| Niriella Village, Ratnapura, Sri Lanka. Link to MinDat.org Location Data. | |||
| Named for Count R.Taaffe of Dublin, Ireland, who discovered the mineral in 1945. (S=Spinel, N=Nolanite Layers). | |||
| IMA2001-A | |||
| Taaffeite | |||
Magnesiotaaffeite-2N2S Image | |||
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Magnesiotaaffeite-2N2S Crystallography |
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| a:c = 1:3.21616 | |||
| a = 5.69, c = 18.3, Z = 2; V = 513.11 Den(Calc)= 3.58 | |||
| Hexagonal - Dihexagonal PyramidalH-M Symbol (6mm) Space Group: P 63mc | |||
| By Intensity(I/Io): 2.43(1), 1.428(0.8), 2.05(0.8), | |||
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Mouse |
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Physical Properties of Magnesiotaaffeite-2N2S |
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| None | |||
| Colorless, Violet red, Greenish, Light green, Pink violet. | |||
| 3.6 - 3.613, Average = 3.6 | |||
| Transparent to Translucent | |||
| 8-8.5 - Between Topaz and Chrysoberyl | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Magnesiotaaffeite-2N2S |
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| CI meas= -0.004 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.012 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2094,KPDmeas= 0.2078,KC= 0.207 |
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| Uniaxial (+), w=1.722, e=1.777, bire=0.0550. | |||
Calculated Properties of Magnesiotaaffeite-2N2S |
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relectron=3.54 gm/cc |
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| Fermion Index = 0.02966 Boson Index = 0.97034 |
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PEMagnesiotaaffeite-2N2S = 1.44 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Magnesiotaaffeite-2N2S is Not Radioactive |
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Magnesiotaaffeite-2N2S Classification |
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| 7.2.11.1 (7)Multiple Oxides | |||
| (7.2)(A+ B++)2 X4 Spinel group | |||
| (7.2.11)Taaffeite Group (T2 = Be + T) | |||
| IV/B.07-20 IV - Oxides | |||
| IV/B - Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related) | |||
| IV/B.07 - Chrysoberyl - Swedenburgite series | |||
Other Magnesiotaaffeite-2N2S Information |
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| PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Magnesiotaaffeite-2N2S : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Magnesiotaaffeite-2N2S using: Visit our Advertisers for Magnesiotaaffeite-2N2S : Translate Magnesiotaaffeite-2N2S Mineral Data : Ask about Magnesiotaaffeite-2N2S here : Print or Cut-and-Paste your Magnesiotaaffeite-2N2S Specimen Label here :
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