Anatase Mineral Data + Say ANATASE


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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, Isère, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek, anatasis - "elongation."
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 DipyramidalH-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),
Help on Forms: Forms:

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Forms: [ 1 1 1]

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Horn M , Schwerdtfeger C F , Meagher E P , Zeitschrift fur Kristallographie , 136 (1972) p.273-281, Refinement of the structure of anatase at several temperatures, Sample: T = 25 C, Locality: Legenbach quarry, Binnatal, Switzerland

View Additional jPOWD Structure files for Anatase
[1] [2] [3] [4]
 

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 Diaphaniety: Diaphaniety: 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: None.
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
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:

relectron=3.69 gm/cc
note: rAnatase =3.88 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.07769
Boson Index = 0.92231
Help on Photoelectric: Photoelectric:

PEAnatase = 10.03 barns/electron
U=PEAnatase x relectron= 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: 4.4.4.1 (4)Simple Oxides
  (4.4)with a cation charge of 4+ (A++++ O2)
  (4.4.4)Dana Group
 
4.4.4.1 Anatase TiO2 I 41/amd 4/m 2/m 2/m
Help on Strunz Class: Strunz Class: IV/D.14-10 IV - Oxides
  IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)
  IV/D.14 - Anatase - Downeyite series
 
IV/D.14-10 Anatase TiO2 I 41/amd 4/m 2/m 2/m
 
IV/D.14-20 Downeyite SeO2 P 4/mbc 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 - Applied Mineralogy 6 -Athena 7 - Crocoite.com Mineral Locations 8 - EUROmin Project 9 - Franklin Minerals(Dunn) 10 - Glendale Community College 11 -Google Images 12 -Google Scholar 13 -Handbook of Mineralogy (UofA) 14 - HyperPhysics 15 -MinDAT 16 -MinMax(Deutsch) 17 -MinMax(English) 18 -Mineralienatlas (Deutsch) 19 - Minerals of Wisconsin 20 - Philatelic Mineralogy 21 -QUT Mineral Atlas 22 -University of Colorado - Mineral Structure Data 23 - University of Manchester - Mineral Structure 24 - WWW-MINCRYST 25 - YupRocks 26 -École des Mines de Paris

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Anatase

TiO2
Dana No: 4.4.4.1 Strunz No: IV/D.14-10
Locality:

 

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