| |
 |
Ilmenorutile Mineral Data
|
|
|
General Ilmenorutile Information
|
 Chemical Formula: |
(Ti,Nb,Fe+++)O2 |
| Composition: |
Molecular Weight = 95.27 gm |
| |
Titanium 35.18 % Ti 58.69 % TiO2 |
| |
Niobium 19.50 % Nb 27.90 % Nb2O5 |
| |
Iron 11.72 % Fe 15.08 % FeO |
| |
Oxygen 33.59 % O |
| |
______ ______ |
| |
100.00 % 101.68 % = TOTAL OXIDE |
| Empirical Formula: |
Ti0.7Nb0.2Fe2+0.2O2 |
| Environment: |
Late primary mineral in granite pegmatites, carbonatites, and found in alluvial placers. Ilmenorutile (1854) is now regarded as Nb-bearing rutile. |
| IMA Status: |
Valid Species (Pre-IMA) 1854 |
| Locality: |
Miass, Ilmen Mountains, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the occurrence in the Ilmen Mountains and the relation to rutile. |
| Name Pronunciation: |
Ilmenorutile + Pronunciation  |
| |
Ilmenorutile Image |
|
Images:
|
|
Ilmenorutile Crystallography
|
| Axial Ratios: |
a:c = 1:0.64741 |
| Cell Dimensions: |
a = 4.606, c = 2.982, Z = 2; V = 63.26 Den(Calc)= 5.00 |
| Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/mnm |
| X Ray Diffraction: |
By Intensity(I/Io): 3.23(1), 1.687(0.9), 2.48(0.8), |
| |
Physical Properties of Ilmenorutile
|
| Cleavage: |
{110} Distinct, {100} Imperfect |
| Color: |
Iron black, Black. |
| Density: |
4.35 - 4.92, Average = 4.63 |
| Diaphaneity: |
Opaque |
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Habit: |
Striated - Parallel lines on crystal surface or cleavage face. |
| Hardness: |
6-6.5 - Orthoclase-Pyrite |
| Luster: |
Sub Metallic |
| Streak: |
reddish brown |
| |
Optical Properties of Ilmenorutile
|
| Dichroism (e): |
brown. |
| Dichroism (w): |
dark bluish green. |
| Optical Data: |
Uniaxial (-). |
| |
NCalc= 2.67 - from Gladstone-Dale relationship (KC = 0.3338) where Ncalc=Dcalc*KC+1
NCalc= 2.55 - from Gladstone-Dale relationship (KC = 0.3338) where Ncalc=Dmeas*KC+1
|
| RL Anisotrophism: |
Strong. |
| RL Bireflectance: |
Weak. |
| RL Color: |
Pale creamy white. |
| |
Calculated Properties of Ilmenorutile
|
| Electron Density: |
Bulk Density (Electron Density)=4.70 gm/cc
note: Specific Gravity of Ilmenorutile =5.00 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.04
Boson Index = 0.96 |
| Photoelectric: |
PEIlmenorutile = 38.88 barns/electron
U=PEIlmenorutile x rElectron Density= 182.85 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ilmenorutile is Not Radioactive |
| |
Ilmenorutile Classification
|
| Dana Class: |
04.04.01.02 (04)Simple Oxides |
| |
(04.04)with a cation charge of 4+ (A++++ O2) |
| |
(04.04.01)Rutile group (Tetragonal: P4/mnm) |
| |
04.04.01.01 Rutile TiO2 P 4/mnm 4/m 2/m 2/m |
| |
04.04.01.02 Ilmenorutile (Ti,Nb,Fe)O2 P 4/mnm 4/m 2/m 2/m |
| |
04.04.01.03 Struverite? (Ti,Ta,Fe)O2 P 4/mnm 4/m 2/m 2/m |
| |
04.04.01.04 Pyrolusite MnO2 P 4/mnm 4/m 2/m 2/m |
| |
04.04.01.05 Cassiterite SnO2 P 4/mnm 4/m 2/m 2/m |
| |
04.04.01.06 Plattnerite PbO2 P 4/mnm 4/m 2/m 2/m |
| |
04.04.01.07 Argutite GeO2 P 4/mnm 4/m 2/m 2/m |
| |
04.04.01.08 Squawcreekite? (Fe,Sb,W)O4•(H2O) P 4/mnm 4/m 2/m 2/m |
| |
04.04.01.09 Stishovite SiO2 P 4/mnm 4/m 2/m 2/m |
| 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 Ilmenorutile Information
|
| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(AntBidBlaNic3) |
| See Also: |
Links to other databases for Ilmenorutile :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
Search for Ilmenorutile using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Ilmenorutile :
Ask about Ilmenorutile here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espaņol
Print or Cut-and-Paste your Ilmenorutile Specimen Label here :
|
Ilmenorutile
(Ti,Nb,Fe+++)O2
Dana No: 04.04.01.02 Strunz No: 04.CB.25
Locality:
Notes:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.
