| |
 |
Ungursaite Mineral Data
|
|
|
General Ungursaite Information
|
 Chemical Formula: |
NaCa5(Ta,Nb)24O65(OH) |
| Composition: |
Molecular Weight = 5,094.85 gm |
| |
Sodium 0.45 % Na 0.61 % Na2O |
| |
Calcium 3.93 % Ca 5.50 % CaO |
| |
Tantalum 63.93 % Ta 78.06 % Ta2O5 |
| |
Niobium 10.94 % Nb 15.65 % Nb2O5 |
| |
Hydrogen 0.02 % H 0.18 % H2O |
| |
Oxygen 20.73 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
NaCa5Ta18Nb6O65(OH) |
| Environment: |
Occurs in the margins of thoreaulite crystals from granitic pegmatite. |
| IMA Status: |
Not Approved IMA 1988 - Published 1985 |
| Locality: |
Ungursai, East Kazakhstan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Synonym: |
ICSD 65336 |
| |
PDF 15-679 |
| |
Ungursaite Crystallography
|
| Axial Ratios: |
a:c = 1:5.9183 |
| Cell Dimensions: |
a = 6.218, c = 36.8, Z = 1; V = 1,232.20 Den(Calc)= 6.87 |
| Crystal System: |
Hexagonal Space Group: P 63/m,P 63 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.776(1), 3.01(1), 6.16(1), |
| |
Physical Properties of Ungursaite
|
| Cleavage: |
None |
| Color: |
Colorless. |
| Diaphaneity: |
Transparent |
| Hardness: |
7 - Quartz |
| Luminescence: |
Cathodoluminescence, Short UV=yellow green. |
| Luster: |
Adamantine |
| Streak: |
white |
| |
Optical Properties of Ungursaite
|
| Optical Data: |
NCalc= 2.19 - from Gladstone-Dale relationship (KC = 0.1731) where Ncalc=Dcalc*KC+1
|
| |
Calculated Properties of Ungursaite
|
| Electron Density: |
Bulk Density (Electron Density)=5.93 gm/cc
note: Specific Gravity of Ungursaite =6.87 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.000229327
Boson Index = 0.999770673 |
| Photoelectric: |
PEUngursaite = 780.76 barns/electron
U=PEUngursaite x rElectron Density=4,632.27 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ungursaite is Not Radioactive |
| |
Ungursaite Classification
|
| Dana Class: |
04.00.00.00 (04)Oxide Minerals |
| |
(04.00)Without Dana Classification Numbers |
| |
(04.00.00)Oxide, Basic |
| |
04.00.00.00 Ashanite? (Nb,Ta,U,Fe,Mn)4O8 Pcan 2/m 2/m 2/m |
| |
04.00.00.00 Chubutite* Pb7O6Cl2 Unk Ortho |
| |
04.00.00.00 Clinobirnessite* Na4Mn14O27•9(H2O) Mono |
| |
04.00.00.00 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m |
| |
04.00.00.00 IMA2008-022 UO2(OH)2 pseudo-orthorhombic Mono |
| |
04.00.00.00 Krasnogorite* WO3 Pmnb 2/m 2/m 2/m |
| |
04.00.00.00 Mengxianminite* (Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29 Unk Ortho |
| |
04.00.00.00 Romanite* (Fe,U,Pb)2(Ti,Fe)O4 Trig ? Trig |
| |
04.00.00.00 Tantalowodginite* (Mn2,[])4Ta4Ta8O32 C 2/c 2/m |
| |
04.00.00.00 Ungursaite* NaCa5(Ta,Nb)24O65(OH) P 63/m,P 63 Hex |
| |
04.00.00.00 Wolframoixiolite* (Fe,Mn,Nb)(Nb,W,Ta)O4 Pc m |
| Strunz Class: |
04.XX.00 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
| |
04.X - Unclassified Strunz OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, telluri |
| |
04.XX -Oxide, Basic |
| |
04.XX.00 Ashanite? (Nb,Ta,U,Fe,Mn)4O8 Pcan 2/m 2/m 2/m |
| |
04.XX.00 Methane hydrate-I! 46(H2O)•2(S)•6(L) P m3n 4/m 3 2/m |
| |
04.XX.00 Clinobirnessite* Na4Mn14O27•9(H2O) Mono |
| |
04.XX.00 Chubutite* Pb7O6Cl2 Unk Ortho |
| |
04.XX.00 Kleberite* FeTi6O13•4(H2O)(?) P 63mcm ? 6mm |
| |
04.XX.00 Hongquiite* TiO F m3m 4/m 3 2/m |
| |
04.XX.00 Psilomelane? (Ba,H2O)2Mn5O10 A2/m 2/m |
| |
04.XX.00 Struverite? (Ti,Ta,Fe)O2 P 4/mnm 4/m 2/m 2/m |
| |
04.XX.00 Ungursaite* NaCa5(Ta,Nb)24O65(OH) P 63/m,P 63 Hex |
| |
04.XX.00 Uhligite? Ca3(Ti,Al,Zr)9O20 Unk Cubic |
| |
04.XX.00 Scheteligite? (Ca,Y,Sb,Mn)2(Ti,Ta,Nb,W)2O6(O,OH) Unk Ortho |
| |
04.XX.00 Allendeite! Sc4Zr3O12 R 3 3 |
| |
04.XX.00 IMA2000-016! (Ti,Fe,Mg,Mn)1-xTi2O5 Pban 2/m 2/m 2/m |
| |
04.XX.00 Methane hydrate-II! 136(H2O)•16(S)•8(L) F d3m 4/m 3 2/m |
| |
04.XX.00 IMA2000-026! (Mn,Li)4(Ta,Sn)4(Ta,Nb)8O32 C 2/c 2/m |
| |
04.XX.00 Methane hydrate-H! 34(H2O)•3(S)•2(M)•1(L) P 6/mmm 6/m 2/m 2/m |
| |
Other Ungursaite Information
|
| References: |
NAME( AmMin, v71:1546) PHYS. PROP.(Am.Min.,Vol.71,p1546,1986) |
| See Also: |
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:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Ungursaite :
Ask about Ungursaite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espaņol
Print or Cut-and-Paste your Ungursaite Specimen Label here :
|
Ungursaite
NaCa5(Ta,Nb)24O65(OH)
Dana No: 04.00.00.00 Strunz No: 04.XX.00
Locality:
Notes:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.