Ilmenite Mineral Data (original) (raw)
General Ilmenite Information
Chemical Formula:
Fe++TiO3
Composition:
Molecular Weight = 151.73 gm
Titanium 31.56 % Ti 52.65 % TiO2
Iron 36.81 % Fe 47.35 % FeO
Oxygen 31.63 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Fe2+TiO3
Environment:
Common accessory mineral in igneous and metamorphic rocks. Commonly concentrated in placers as "black sand" deposits.
IMA Status:
Valid Species (Pre-IMA) 1827
Locality:
Ilmen Mountains, southern Urals, of the Russia. Link to MinDat.org Location Data.
Name Origin:
Named after It's locality.
Name Pronunciation:
Ilmenite 
Synonym:
ICSD 30664
Leucoxene - alteration product
Menaccanite
PDF 29-733
Picroilmenite - Mg-rich ilmenite
Titanic Iron Ore
Titanoferrite
Ilmenite Image
Images:
Ilmenite Crystallography
Axial Ratios:
a:c = 1:2.76065
Cell Dimensions:
a = 5.093, c = 14.06, Z = 6; V = 315.84 Den(Calc)= 4.79
Crystal System:
Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3
X Ray Diffraction:
By Intensity(I/Io): 2.754(1), 2.544(0.7), 1.7261(0.55),
Forms:
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| | Forms:( 1 1 0) ( 0 1 1) ( 0 0 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | --------------------------------------------------------------------------------------------------------------------------------------------------- |
Crystal Structure:
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| | Wechsler B A , Prewitt C T , American Mineralogist , 69 (1984) p.176-185, Crystal structure of ilmenite (FeTiO3) at high temperature and high pressure, 24 deg C View Additional jPOWD Structure files for Ilmenite [1] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [2] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [3] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [4] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [5] [6] [7] [8] [9] | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Ilmenite
Cleavage:
None
Color:
Iron black, Black.
Density:
4.72
Diaphaneity:
Opaque
Fracture:
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Habit:
Massive - Lamellar - Distinctly foliated fine-grained forms.
Habit:
Tabular - Form dimensions are thin in one direction.
Hardness:
5-5.5 - Apatite-Knife Blade
Luminescence:
Non-fluorescent.
Luster:
Sub Metallic
Magnetism:
Naturally weak
Streak:
brownish black
Optical Properties of Ilmenite
Dichroism (e):
dark brown.
Dichroism (w):
pinkish brown.
Optical Data:
Uniaxial (-).
NCalc= 2.42 - from Gladstone-Dale relationship (KC = 0.2959) where Ncalc=Dcalc*KC+1
NCalc= 2.4 - from Gladstone-Dale relationship (KC = 0.2959) where Ncalc=Dmeas*KC+1
RL Anisotrophism:
Strong in shades of gray.
RL Bireflectance:
Strong.
RL Color:
Gray, brownish tinted.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Ilmenite in Air
| λ | R1 | R 2 |  |
∑ R1(λ) | ∑ R2(λ) |
|---|---|---|---|---|---|
| 400 nm | 20.00 | 21.20 |  |
||
| 420 nm | 19.50 | 20.80 |  |
||
| 440 nm | 19.00 | 20.40 |  |
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| 460 nm | 18.50 | 20.10 |  |
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| 480 nm | 18.10 | 20.00 |  |
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| 500 nm | 18.00 | 19.80 |  |
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| 520 nm | 18.00 | 19.80 |  |
||
| 540 nm | 18.00 | 19.70 |  |
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| 560 nm | 18.00 | 19.60 |  |
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| 580 nm | 18.00 | 19.80 |  |
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| 600 nm | 18.10 | 19.90 |  |
||
| 620 nm | 18.20 | 19.90 |  |
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| 640 nm | 18.30 | 19.90 |  |
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| 660 nm | 18.40 | 20.00 |  |
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| 680 nm | 18.50 | 20.10 |  |
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| 700 nm | 18.60 | 20.40 |  |
Calculated Relative Intensity Colors of Ilmenite in Air
| RelativeIntensity | 0% | 50% | 100% | 150% | 200% | 250% | 300% | 350% | 400% | 450% | 490% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| R1 | |||||||||||
| R2 |
Calculated Properties of Ilmenite
Electron Density:
Bulk Density (Electron Density)=4.55 gm/cc
note: Specific Gravity of Ilmenite =4.79 gm/cc.
Fermion Index:
Fermion Index = 0.04
Boson Index = 0.96
Photoelectric:
PEIlmenite = 16.55 barns/electron
U=PEIlmenite x rElectron Density= 75.25 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ilmenite is Not Radioactive
Ilmenite Classification
Dana Class:
04.03.05.01 (04)Simple Oxides
(04.03)with a cation charge of 3+ (A+++2 O3)
(04.03.05)Ilmenite Group
04.03.05.01 Ilmenite FeTiO3 R 3 3
04.03.05.02 Geikielite MgTiO3 R 3 3
04.03.05.03 Pyrophanite MnTiO3 R 3 3
04.03.05.04 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3
04.03.05.05 Melanostibite Mn(Sb,Fe)O3 R 3 3
04.03.05.06 Brizziite-III NaSbO3 R 3 3
04.03.05.07 Akimotoite! (Mg,Fe)SiO3 R 3 3
Strunz Class:
04.CB.05 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.05 Auroantimonate* AuSbO3 Ortho ? Ortho
04.CB.05 Geikielite MgTiO3 R 3 3
04.CB.05 Brizziite-III NaSbO3 R 3 3
04.CB.05 Brizziite-VII NaSbO3 R 3 3
04.CB.05 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3
04.CB.05 Corundum Al2O3 R 3c 3 2/m
04.CB.05 Eskolaite Cr2O3 R 3c 3 2/m
04.CB.05 Hematite Fe2O3 R 3c 3 2/m
04.CB.05 Karelianite V2O3 R 3c 3 2/m
04.CB.05 Ilmenite FeTiO3 R 3 3
04.CB.05 Melanostibite Mn(Sb,Fe)O3 R 3 3
04.CB.05 Pyrophanite MnTiO3 R 3 3
04.CB.05 Romanite* (Fe,U,Pb)2(Ti,Fe)O4 Trig ? Trig
04.CB.05 Tistarite! Ti2O3 R 3c 3 2/m
Other Ilmenite Information
References:
NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
See Also:
Links to other databases for Ilmenite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - Franklin Minerals(Palache)
10 - GeoScienceWorld
11 - Google Images
12 - Google Scholar
13 - Handbook of Mineralogy (MinSocAm)
14 - Handbook of Mineralogy (UofA)
15 - HyperPhysics
16 - MinDAT
17 - Mineralienatlas (Deutsch)
18 - Online Mineral Museum
19 - QUT Mineral Atlas
20 - Ruff.Info
21 - University of Colorado - Mineral Structure Data
22 - WWW-MINCRYST
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Print or Cut-and-Paste your Ilmenite Specimen Label here :
Ilmenite
Fe++TiO3
Dana No: 04.03.05.01 Strunz No: 04.CB.05
Locality:
Notes: