|
|
Tantalowodginite Mineral Data
|
|
|
General Tantalowodginite Information
|
Chemical Formula: |
(Mn2,[ ])4Ta4Ta8O32 |
Composition: |
Molecular Weight = 2,848.17 gm |
|
Tantalum 76.24 % Ta 93.09 % Ta2O5 |
|
Manganese 5.79 % Mn 7.47 % MnO |
|
Oxygen 17.98 % O |
|
______ ______ |
|
100.00 % 100.56 % = TOTAL OXIDE |
Empirical Formula: |
Mn2+3Ta4Ta8O32 |
IMA Status: |
Not Approved IMA, Abandoned 1992 |
Locality: |
Link to MinDat.org Location Data. |
Name Origin: |
Named for the composition. |
|
Tantalowodginite Crystallography
|
Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c |
|
Physical Properties of Tantalowodginite
|
Color: |
Brown. |
Density: |
6.9 - 7.4, Average = 7.15 |
Diaphaneity: |
Translucent to Opaque |
Hardness: |
5-5.5 - Apatite-Knife Blade |
Luster: |
Adamantine |
|
Optical Properties of Tantalowodginite
|
Optical Data: |
NCalc= 2.11 - from Gladstone-Dale relationship (KC = 0.1553) where Ncalc=Dmeas*KC+1 |
|
Calculated Properties of Tantalowodginite
|
Electron Density: |
Bulk Density (Electron Density)=6.06 gm/cc note: Specific Gravity of Tantalowodginite =7.15 gm/cc. |
Fermion Index: |
Fermion Index = 0.0001777688 Boson Index = 0.9998222312 |
Photoelectric: |
PETantalowodginite = 927.96 barns/electron U=PETantalowodginite x rElectron Density=5,623.48 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tantalowodginite is Not Radioactive |
|
Tantalowodginite Classification
|
Dana Class: |
04.00.00.00 (04)Oxide Minerals |
|
(04.00)Without Dana Classification Numbers |
|
(04.00.00)Oxide |
|
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.DB.40 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
|
04.D - Metal:Oxygen = 1:2 and similar |
|
04.DB -With medium-sized cations; chains of edge-sharing octahedra |
|
04.DB.40 Ferrowodginite FeSnTa2O8 C 2/c 2/m |
|
04.DB.40 Lithiotantite Li(Ta,Nb)3O8 P 21/c 2/m |
|
04.DB.40 Lithiowodginite LiTa3O8 C 2/c 2/m |
|
04.DB.40 Tantalowodginite* (Mn2,[])4Ta4Ta8O32 C 2/c 2/m |
|
04.DB.40 Titanowodginite (Mn,Fe)(Ti,Sn)(Ta,Nb)2O8 C 2/c 2/m |
|
04.DB.40 Wodginite Mn(Sn,Ta)(Ta,Nb)2O8 C 2/c 2/m |
|
04.DB.40 Ferrotitanowodginite! FeTiTa2O8 C 2/m 2/m |
|
Other Tantalowodginite Information
|
References: |
PHYS. PROP.(Bull.Miner.,Vol.107-111,1984-1988) |
See Also: |
Links to other databases for Tantalowodginite :
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 Tantalowodginite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Tantalowodginite :
Ask about Tantalowodginite 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
Espa�ol
Print or Cut-and-Paste your Tantalowodginite Specimen Label here :
Tantalowodginite
(Mn2,[ ])4Ta4Ta8O32
Dana No: 04.00.00.00 Strunz No: 04.DB.40
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.