Pseudorutile Mineral Data

General Pseudorutile Information

Chemical Formula:

Fe+++2Ti3O9

Composition:

Molecular Weight = 399.33 gm

Titanium 35.97 % Ti 60.01 % TiO₂

Iron 27.97 % Fe 39.99 % Fe₂O₃

Oxygen 36.06 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺₂Ti₃O₉

Environment:

Alteration in ilmenite placers and beach sands.

IMA Status:

Approved IMA 1966

Locality:

Common and widespread alteration product of ilmenite. Link to MinDat.org Location Data.

Name Origin:

Named for the composition and as an intermediate product between ilmanite and rutile.

Name Pronunciation:

Pseudorutile + Pronunciation

Synonym:

Arizonite

ICSD 4131

Kleberite-(OH)

PDF 47-1777

Pseudorutile Image

Images:

Pseudorutile

Comments: Dark brown grain of hydroxyian pseudorutile (Kleberite), from a heavy mineral concentrate.
Location: KÃ¶nigshain, Mittweida, Saxony, Germany. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Pseudorutile Crystallography

Axial Ratios:

a:c = 1:0.32104

Cell Dimensions:

a = 14.375, c = 4.615, Z = 5; V = 825.88 Den(Calc)= 4.01

Crystal System:

Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: P 3₂2

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

By Intensity(I/I_o): 1.686(1), 2.481(0.8), 2.183(0.7),

Crystal Structure:

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Grey I E , Reid A F , American Mineralogist , 60 (1975) p.898-906, The structure of pseudorutile and its role in the natural alteration of ilmenite

Physical Properties of Pseudorutile

Cleavage:

None

Color:

Black, Brown, Red, Gray.

Density:

3.8

Diaphaneity:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

3.5 - Copper Penny

Luster:

Sub Metallic

Streak:

reddish brown

Optical Properties of Pseudorutile

Optical Data:

NCalc= 2.45 - from Gladstone-Dale relationship (KC = 0.3618) where Ncalc=Dcalc*KC+1
NCalc= 2.37 - from Gladstone-Dale relationship (KC = 0.3618) where Ncalc=Dmeas*KC+1

Calculated Properties of Pseudorutile

Electron Density:

Bulk Density (Electron Density)=3.82 gm/cc
note: Specific Gravity of Pseudorutile =4.01 gm/cc.

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Pseudorutile= 14.57 barns/electron
U=PE_Pseudorutile x rElectron Density= 55.60 barns/cc.

Radioactivity:

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

Pseudorutile Classification

Dana Class:

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

(08.04)with miscellaneous formulae

(08.04.02)Dana Group

08.04.02.01 Pseudorutile Fe2Ti3O9 P 3₂2 3 2

Strunz Class:

04.CB.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CB -With medium-sized cations

04.CB.25 Ilmenorutile (Ti,Nb,Fe)O2 P 4/mnm 4/m 2/m 2/m

04.CB.25 Pseudorutile Fe2Ti3O9 P 3₂2 3 2

Other Pseudorutile Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

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

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Ask about Pseudorutile here :
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Mindat.org's Discussion Groups
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Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Pseudorutile

Fe+++2Ti3O9
Dana No: 08.04.02.01 Strunz No: 04.CB.25
Locality:

Notes: