Wodginite Mineral Data

General Wodginite Information

Chemical Formula:

Mn++(Sn,Ta)(Ta,Nb)2O8

Composition:

Molecular Weight = 635.06 gm

Tantalum 56.99 % Ta 69.58 % Ta₂O₅

Manganese 8.65 % Mn 11.17 % MnO

Niobium 5.85 % Nb 8.37 % Nb₂O₅

Iron 0.88 % Fe 1.26 % Fe₂O₃

Tin 7.48 % Sn 9.49 % SnO₂

Oxygen 20.15 % O

______ ______

100.00 % 99.87 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺Ta_0.4Sn_0.4Fe³⁺_0.1Ta_1.6Nb_0.4O₈

Environment:

Complex zoned pegmatite in amphibolite.

IMA Status:

Approved IMA 1963

Locality:

Wodgina, Marble Bar, and Greenbushes, Western Australia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Wodginite + Pronunciation

Synonym:

ICSD 67677

PDF 29-901

Wodginite Image

Images:

Wodginite

Comments: Dark, lustrous crystal of wodginite.
Location: Sapucaia do Norte, Galileia, Minas Gerais, Brazil. Scale: 1.3 x 0.7 cm.
© John Veevaert

Wodginite Crystallography

Axial Ratios:

a:b:c =0.8299:1:0.4446

Cell Dimensions:

a = 9.52, b = 11.47, c = 5.1, Z = 4; beta = 91.3° V = 556.75 Den(Calc)= 7.58

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3(1), 2.95(0.7), 3.67(0.7),

Crystal Structure:

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Graham J , Thornber M R , American Mineralogist , 59 (1974) p.1040-1044, The crystal chemistry of complex niobium and tantalum oxides II. Composition and, structure of wodginite, from Wodgina, Australia

View Additional jPOWD Structure files for Wodginite
[1] [2] [3] [4]

Physical Properties of Wodginite

Cleavage:

None

Color:

Dark brown, Reddish brown, Black, Black brown.

Density:

7.19 - 7.36, Average = 7.27

Fracture:

Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Pyramidal - Crystals are shaped like pyramids.

Hardness:

5.5 - Knife Blade

Luster:

Sub Metallic

Streak:

brown

Optical Properties of Wodginite

Optical Data:

NCalc= 2.27 - from Gladstone-Dale relationship (KC = 0.167) where Ncalc=Dcalc*KC+1
NCalc= 2.22 - from Gladstone-Dale relationship (KC = 0.167) where Ncalc=Dmeas*KC+1

Calculated Properties of Wodginite

Electron Density:

Bulk Density (Electron Density)=6.54 gm/cc
note: Specific Gravity of Wodginite =7.58 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Wodginite= 716.28 barns/electron
U=PE_Wodginite x rElectron Density=4,685.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wodginite is Not Radioactive

Wodginite Classification

Dana Class:

08.01.08.01 (08)Multiple Oxides with Nb, Ta, and Ti

(08.01)where A BO4

(08.01.08)Wodginite Group

08.01.08.01 Wodginite Mn(Sn,Ta)(Ta,Nb)2O8 C 2/c 2/m

08.01.08.02 Ferrowodginite FeSnTa2O8 C 2/c 2/m

08.01.08.03 Titanowodginite (Mn,Fe)(Ti,Sn)(Ta,Nb)2O8 C 2/c 2/m

08.01.08.04 Lithiowodginite LiTa3O8 C 2/c 2/m

08.01.08.05 Ferrotitanowodginite! FeTiTa2O8 C 2/m 2/m

08.01.08.06 IMA2000-026! (Mn,Li)4(Ta,Sn)4(Ta,Nb)8O32 C 2/c 2/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 Wodginite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Wodginite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Wodginite Specimen Label here :

Wodginite

Mn++(Sn,Ta)(Ta,Nb)2O8
Dana No: 08.01.08.01 Strunz No: 04.DB.40
Locality:

Notes: