Tantite Mineral Data

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


General Tantite Information

Help on Chemical Formula: Chemical Formula: Ta2O5
Help on Composition: Composition: Molecular Weight = 441.89 gm
   Tantalum  81.90 %  Ta  100.00 % Ta2O5
   Oxygen    18.10 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ta2O5
Help on Environment: Environment: Granitic pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Kola region, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition (Tantalum).
Help on Name Pronunciation: Name Pronunciation: Tantite Say TANTITE
 

Search for Tantite 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.
  

Tantite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0026:1:9.43
Help on Cell Dimensions: Cell Dimensions: a = 3.8, b = 3.79, c = 35.74, Z = 6; alpha = 90.92°, beta = 90.18°, gamma = 90° V = 514.66 Den(Calc)= 8.55
Help on Crystal System: Crystal System: Triclinic - PedialH-M Symbol (1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.01(1), 1.844(0.9), 1.573(0.8),
Click Here for Large Tantite 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


Stephenson N C , Roth R S , Journal of Solid State Chemistry , 3 (1971) p.145-153, The crystal structure of the high temperature form of Ta2O2, Locality: synthetic

 

Physical Properties of Tantite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless.
Help on Density: Density: 8.45
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 7 - Quartz
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Adamantine
Help on Streak: Streak: white
 

Optical Properties of Tantite

Help on Optical Data: Optical Data: Biaxial (?)
  NCalc= 2.29 - from Gladstone-Dale relationship (KC = 0.151) where Ncalc=Dcalc*KC+1
NCalc= 2.28 - from Gladstone-Dale relationship (KC = 0.151) where Ncalc=Dmeas*KC+1
Help on RL Anisotrophism: RL Anisotrophism: Observed.
Help on RL Color: RL Color: Grayish white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Tantite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 486 nm   17.50   16.50 
   
 551 nm   17.20   15.40 
 589 nm   17.10   15.30 
 656 nm   15.40   14.20 
Calculated Relative Intensity Colors of Tantite in Air
Relative
Intensity		    0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540% 590%
R1                        
R2                        
 

Calculated Properties of Tantite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.20 gm/cc
note: Specific Gravity of Tantite =8.55 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001851717
Boson Index = 0.9998148283
Help on Photoelectric: Photoelectric: PETantite =1,001.81 barns/electron
U=PETantite x rElectron Density=7,210.67 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tantite is Not Radioactive
 

Tantite Classification
Help on Dana Class: Dana Class: 04.06.06.01 (04)Simple Oxides
  (04.06)not classified
  (04.06.06)Dana Group
 
04.06.06.01 Tantite Ta2O5 P1 1
Help on Strunz Class: Strunz Class: 04.EA.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.E - Metal:Oxygen = < 1:2
  04.EA -Oxides with metal : oxygen < 1:2 (M2O5, MO3)
 
04.EA.05 Tantite Ta2O5 P1 1
 

Other Tantite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Tantite :
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 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Tantite using:

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

Visit our Advertisers for Tantite :

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

Ask about Tantite 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 Tantite Specimen Label here :

Tantite

Ta2O5
Dana No: 04.06.06.01 Strunz No: 04.EA.05
Locality:

 

Notes: