Ferrotitanowodginite Mineral Data

General Ferrotitanowodginite Information

Chemical Formula:

Fe++TiTa2O8

Composition:

Molecular Weight = 593.62 gm

Tantalum 60.96 % Ta 74.44 % Ta₂O₅

Titanium 8.07 % Ti 13.46 % TiO₂

Iron 9.41 % Fe 12.10 % FeO

Oxygen 21.56 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺TiTa₂O₈

Environment:

San Elías granitic pegmatite. Found as sub-millimeter domains in ferrowodginite.

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Found in the southern quarry, Sierra de la Estanzuela, departamento de Chacabuco, San Luis province, Argentina. Link to MinDat.org Location Data.

Name Origin:

The name reflects its composition and relationship to wodginite.

Synonym:

IMA1998-028

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Ferrotitanowodginite Crystallography

Axial Ratios:

a:b:c =0.8259:1:0.4458

Cell Dimensions:

a = 9.403, b = 11.384, c = 5.075, Z = 4; beta = 90.55° V = 543.22 Den(Calc)= 7.26

Crystal System:

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

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

By Intensity(I/I_o): 2.963(1), 2.939(0.9), 3.626(0.7),1.715(0.5), 1.711(0.45), 1.759(0.45), 2.484(0.45), 1.447(0.4),

Physical Properties of Ferrotitanowodginite

Cleavage:

None

Color:

Very dark brown, Black.

Diaphaneity:

Opaque

Fracture:

Brittle - Irregular - Very brittle fracture producing irregular fragments

Habit:

Inclusions - Generally found as inclusions in other minerals.

Hardness:

5.5 - Knife Blade

Luster:

Sub Metallic

Streak:

dark brown

Optical Properties of Ferrotitanowodginite

Optical Data:

NCalc= 2.37 - from Gladstone-Dale relationship (KC = 0.188) where Ncalc=Dcalc*KC+1

Calculated Properties of Ferrotitanowodginite

Electron Density:

Bulk Density (Electron Density)=6.31 gm/cc
note: Specific Gravity of Ferrotitanowodginite =7.26 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Ferrotitanowodginite}= 726.85 barns/electron
U=PE_{Ferrotitanowodginite} x rElectron Density=4,586.96 barns/cc.

Radioactivity:

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

Ferrotitanowodginite Classification

Dana Class:

08.01.08.05 (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 Ferrotitanowodginite Information

References:

NAME( CanMin, 8/99) PHYS. PROP.(MinRec, V 31, No. 2)

See Also:

Links to other databases for Ferrotitanowodginite :
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 Ferrotitanowodginite Specimen Label here :

Ferrotitanowodginite

Fe++TiTa2O8
Dana No: 08.01.08.05 Strunz No: 04.DB.40
Locality:

Notes: