Pseudorutile Mineral Data

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

IMA Status:

Approved IMA 1966

Locality:

Link to MinDat.org Location Data.

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: K?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

Diaphaniety:

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:

r_electron=3.82 gm/cc
note: r_Pseudorutile=4.01 gm/cc.

Fermion Index

Fermion Index = 0.05261
Boson Index = 0.94739

Photoelectric:

PE_Pseudorutile= 14.57 barns/electron
U=PE_Pseudorutile x r_electron= 55.60 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Pseudorutile is Not Radioactive

Pseudorutile Classification

Dana Class:

8.4.2.1 (8)Multiple Oxides with Nb, Ta, and Ti

(8.4)with miscellaneous formulae

(8.4.2)Dana Group

8.4.2.1 Pseudorutile Fe2Ti3O9 P 3₂2 3 2

Strunz Class:

IV/C.24-30 IV - Oxides

IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)

IV/C.24 - Aramcolite - Arizonite series

IV/C.24-10 Armalcolite (Mg,Fe)Ti2O5 Bbmm 2/m 2/m 2/m

IV/C.24-20 Pseudobrookite (Fe,Fe)2(Ti,Fe)O5 Bbmm 2/m 2/m 2/m

IV/C.24-30 Pseudorutile Fe2Ti3O9 P 3₂2 3 2

Other Pseudorutile Information

References:

NAME( MinRec) 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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas

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

Pseudorutile

Fe+++2Ti3O9
Dana No: 8.4.2.1 Strunz No: IV/C.24-30
Locality:

Notes: