Mineralogy Database

Anatase Mineral Data

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General Anatase Information

Help on Chemical  Formula: Chemical Formula: TiO2
Help on Composition: Composition: Molecular Weight = 79.88 gm
   Titanium  59.94 %  Ti  100.00 % TiO2
   Oxygen    40.06 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: TiO2
Help on Environment: Environment: Usually secondary, derived from other Ti-bearing minerals. Common as a detrital mineral.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1801
Help on Locality: Locality: St. Christophe, Bourg-d'Oisans, Is�re, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek, anatasis - "elongation."
Help on Name Pronunciation: Name Pronunciation: Anatase Say ANATASE
Help on Synonym: Synonym: ICSD 9852
  Octahedrite
  PDF 21-1272
 

Anatase Image

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  Anatase

Comments: anatase with calcite.
Location: Hardangervidda, Norway, (1999). Scale: 1.5 x 3 cm.
© Fabre Minerals

Anatase Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.50725
Help on Cell Dimensions: Cell Dimensions: a = 3.793, c = 9.51, Z = 4; V = 136.82 Den(Calc)= 3.88
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.51(1), 1.891(0.33), 2.379(0.22),
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Physical Properties of Anatase

Help on Cleavage: Cleavage: {101} Perfect, {001} Distinct
Help on Color: Color: Black, Reddish brown, Yellowish brown, Dark blue, Gray.
Help on Density: Density: 3.9
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Pyramidal - Crystals are shaped like pyramids.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Adamantine - Resinous
Help on Streak: Streak: pale yellowish white
 

Optical Properties of Anatase

Help on Dichroism (e): Dichroism (e): slate blue.
Help on Dichroism (w): Dichroism (w): slate blue.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3929,KPDmeas= 0.3909,KC= 0.393
Ncalc = 2.52 - 2.53
Help on Optical Data: Optical Data: Uniaxial (-), e=2.488, w=2.561, bire=0.0730.
Help on RL Pleochroism: RL Pleochroism: Weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Anatase in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   23.70   23.80 
   
 420 nm   22.40   22.50 
 440 nm   21.70   21.60 
 460 nm   21.10   21.00 
 480 nm   20.70   20.40 
 500 nm   20.20   20.00 
 520 nm   19.90   19.60 
 540 nm   19.60   19.30 
 560 nm   19.40   19.00 
 580 nm   19.20   18.80 
 600 nm   19.00   18.50 
 620 nm   18.80   18.40 
 640 nm   18.70   18.20 
 660 nm   18.60   18.10 
 680 nm   18.50   18.00 
 700 nm   18.40   17.80 
Calculated Relative Intensity Colors of Anatase in Air
Relative
Intensity
   0%   50% 100% 150% 200% 250% 300% 350% 400% 450% 470%
R1                      
R2                      
 

Calculated Properties of Anatase

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.69 gm/cc
note: Specific Gravity of Anatase =3.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEAnatase = 10.03 barns/electron
U=PEAnatase x rElectron Density= 37.04 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Anatase is Not Radioactive
 

Anatase Classification

Help on  Dana Class: Dana Class: 04.04.04.01 (04)Simple Oxides
  (04.04)with a cation charge of 4+ (A++++ O2)
  (04.04.04)Dana Group
 
04.04.04.01 Anatase TiO2 I 41/amd 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.DD.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DD -With medium-sized cations; frameworks of edge-sharing octahedra
 
04.DD.05 Anatase TiO2 I 41/amd 4/m 2/m 2/m
 

Other Anatase Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Anatase :
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 - GeoScienceWorld
10 - Glendale Community College
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 - Philatelic Mineralogy
20 - QUT Mineral Atlas
21 - Ruff.Info
22 - University of Colorado - Mineral Structure Data
23 - WWW-MINCRYST
24 - YupRocks

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

Anatase

TiO2
Dana No: 04.04.04.01 Strunz No: 04.DD.05
Locality:

 

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