Tantalowodginite Mineral Data

Tantalowodginite Mineral Data

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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.

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Tantalowodginite Crystallography

Crystal System:

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

Physical Properties of Tantalowodginite

Color:

Brown.

Density:

6.9 - 7.4, Average = 7.15

Diaphaniety:

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:

r_electron=6.06 gm/cc
note: r_{Tantalowodginite}=7.15 gm/cc.

Fermion Index

Fermion Index = 0.00017
Boson Index = 0.99983

Photoelectric:

PE_{Tantalowodginite}= 927.96 barns/electron
U=PE_{Tantalowodginite} x r_electron=5,623.48 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tantalowodginite is Not Radioactive

Tantalowodginite Classification

Dana Class:

4.0.0.0 (4)Oxide Minerals

(4.0)Without Dana Classification Numbers

(Oxide)

Strunz Class:

IV/X.00-00 IV - Oxides

IV/X - Unclassified Strunz Oxides

IV/X.00 - Oxide

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 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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

Tantalowodginite

(Mn2,[ ])4Ta4Ta8O32
Dana No: Unknown Strunz No: IV/X.00-00
Locality:

Notes: