Alumotantite  Mineral Data

Alumotantite Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Alumotantite Information

Help on Chemical  Formula: Chemical Formula: AlTaO4
Help on Composition: Composition: Molecular Weight = 271.93 gm
   Tantalum  66.54 %  Ta   81.25 % Ta2O5
   Aluminum   9.92 %  Al   18.75 % Al2O3
   Oxygen    23.53 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: AlTaO4
Help on Environment: Environment: In albitized areas of highly fractionated rare element-enriched granite pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: From an undisclosed locality [Leshaia pegmatite, Vuoiyarvi carbonatite complex] on the Kola Peninsula, Russia. In the Mdara mine, Bikita, Zimbabwe. From the Alta fo Giz pegmatite, near Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For ALUMinum and TANTalum in the composition.
Help on Name Pronunciation: Name Pronunciation: Alumotantite + Pronunciation Say ALUMOTANTITE
Help on Synonym: Synonym: ICSD 67676
  PDF 47-1796
 

Search for Alumotantite Images

Click Here To Search Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

  

Alumotantite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3955:1:0.4222
Help on Cell Dimensions: Cell Dimensions: a = 4.473, b = 11.308, c = 4.775, Z = 4; V = 241.52 Den(Calc)= 7.48
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bcn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.13(1), 2.88(0.6), 3.64(0.5),
Click Here for Large Alumotantite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate

Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above


Ercit T S , Hawthorne F C , Cerny P , The Canadian Mineralogist , 30 (1992) p.653-662, The crystal structure of alumotantite: Its relation to, the structures of simpsonite and the (Al,Ga)(Ta,Nb)O4 compounds

 

Physical Properties of Alumotantite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 7.5 - Garnet
Help on Luster: Luster: Adamantine
Help on Streak: Streak: white
 

Optical Properties of Alumotantite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.172 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1337,KC= 0.1615
Ncalc = 2.21
Help on Optical Data: Optical Data: Biaxial (-), a=2, b=2, g=2, bire=0.0000, 2V(Calc)=0, 2V(Meas)=66.
Help on RL Anisotrophism: RL Anisotrophism: Observed.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Alumotantite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 486 nm   15.60   14.70 
   
 589 nm   15.40   14.60 
 656 nm   15.90   15.10 
Calculated Relative Intensity Colors of Alumotantite in Air
Relative
Intensity
   0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 600%
R1                        
R2                        
 

Calculated Properties of Alumotantite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.49 gm/cc
note: Specific Gravity of Alumotantite =7.48 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001928186
Boson Index = 0.9998071814
Help on Photoelectric: Photoelectric: PEAlumotantite = 789.89 barns/electron
U=PEAlumotantite x rElectron Density=5,127.74 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Alumotantite is Not Radioactive
 

Alumotantite Classification

Help on  Dana Class: Dana Class: 08.01.07.01 (08)Multiple Oxides with Nb, Ta, and Ti
  (08.01)where A BO4
  (08.01.07)Dana Group
 
08.01.07.01 Alumotantite AlTaO4 P bcn 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.DB.55 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DB -With medium-sized cations; chains of edge-sharing octahedra
 
04.DB.55 Alumotantite AlTaO4 P bcn 2/m 2/m 2/m
 

Other Alumotantite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Alumotantite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

Search for Alumotantite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Alumotantite :

A Bijoux Google Search for Alumotantite
Adam's Minerals Google Search for Alumotantite
Cape Minerals Google Search for Alumotantite
Dakota Matrix Minerals Google Search for Alumotantite
Excalibur Mineral Corp. Google Search for Alumotantite
Exceptional Minerals Google Search for Alumotantite
John Betts Fine Minerals Search for Alumotantite
McDougall Minerals Google Search for Alumotantite
Mineral News Website Link
Rock and Mineral Shows Google Search for Alumotantite
Weinrich Minerals, Inc. Google Search for Alumotantite

Ask about Alumotantite 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 Alumotantite Specimen Label here :

Alumotantite

AlTaO4
Dana No: 08.01.07.01 Strunz No: 04.DB.55
Locality:

 

Notes: