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:

PE_{Tantalowodginite}= 927.96 barns/electron
U=PE_{Tantalowodginite} 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

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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:

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