Anatase Mineral Data (original) (raw)

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

Click Here for Larger Anatase Image in a New Browser Window Images:

Click Here for Larger Anatase Image 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),

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| | Forms:( 1 1 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ------------------------------------------------------------------------------------------------------------------------- |

Click Here for Large Anatase Structure Window Crystal Structure:

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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 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 R 2 ∑ 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

RelativeIntensity 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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Ask about Anatase here :
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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:

Notes: