General Ungursaite Information![]() NaCa5(Ta,Nb)24O65(OH) |
![]() Molecular Weight = 5,094.85 gm |
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Sodium 0.45 % Na 0.61 % Na2O |
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Calcium 3.93 % Ca 5.50 % CaO |
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Tantalum 63.93 % Ta 78.06 % Ta2O5 |
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Niobium 10.94 % Nb 15.65 % Nb2O5 |
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Hydrogen 0.02 % H 0.18 % H2O |
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Oxygen 20.73 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() NaCa5Ta18Nb6O65(OH) |
![]() Occurs in the margins of thoreaulite crystals from granitic pegmatite. |
![]() Not Approved IMA 1988 - Published 1985 |
![]() Ungursai, East Kazakhstan. Link to MinDat.org Location Data. |
![]() Named for the locality. |
![]() ICSD 65336 |
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PDF 15-679 |
| | Search for Ungursaite Images
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| | Ungursaite Crystallography![]() a:c = 1:5.9183 |
![]() a = 6.218, c = 36.8, Z = 1; V = 1,232.20 Den(Calc)= 6.87 |
![]() HexagonalSpace Group: P 63/m,P 63 |
![]() By Intensity(I/Io): 2.776(1), 3.01(1), 6.16(1), |
| Physical Properties of Ungursaite![]() None |
![]() Colorless. |
![]() Transparent |
![]() 7 - Quartz |
![]() Cathodoluminescence, Short UV=yellow green. |
![]() Adamantine |
![]() white |
| Optical Properties of Ungursaite![]() NCalc= 2.19 - from Gladstone-Dale relationship (KC = 0.1731) where Ncalc=Dcalc*KC+1 |
| Calculated Properties of Ungursaite![]() Bulk Density (Electron Density)=5.93 gm/cc |
note: Specific Gravity of Ungursaite =6.87 gm/cc. ![]() Fermion Index = 0.000229327 |
Boson Index = 0.999770673 ![]() PEUngursaite = 780.76 barns/electron |
U=PEUngursaite x rElectron Density=4,632.27 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Ungursaite is Not Radioactive | Ungursaite Classification![]() 04.00.00.00 (04)Oxide Minerals |
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(04.00)Without Dana Classification Numbers |
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(04.00.00)Oxide, Basic |
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![]() 04.XX.00 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.X - Unclassified Strunz OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, telluri |
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04.XX -Oxide, Basic |
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| Other Ungursaite Information![]() NAME( AmMin, v71:1546) PHYS. PROP.(Am.Min.,Vol.71,p1546,1986) |
![]() Links to other databases for Ungursaite : |
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 11 - WWW-MINCRYST Search for Ungursaite using: Visit our Advertisers for Ungursaite : A Bijoux Google Search for UngursaiteAdam's Minerals Google Search for Ungursaite Cape Minerals Google Search for Ungursaite Dakota Matrix Minerals Google Search for Ungursaite Excalibur Mineral Corp. Google Search for Ungursaite Exceptional Minerals Google Search for Ungursaite John Betts Fine Minerals Search for Ungursaite McDougall Minerals Google Search for Ungursaite Mineral News Website Link Rock and Mineral Shows Google Search for Ungursaite Weinrich Minerals, Inc. Google Search for Ungursaite Ask about Ungursaite here : Print or Cut-and-Paste your Ungursaite Specimen Label here :
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