Tveitite-(Y) Mineral Data

Tveitite-(Y) Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About


Desert Winds Gems and Minerals
[Mineral Galleries] [About Me] [e-Bay Items] [Latest News] [How to Order]
A Diverse Selection of Beautifully Unique Gem & Mineral Specimens
Desert Winds Gems & Minerals • For All Levels of Collectors Worldwide
Aesthetic & Rare Mineral Specimens • Regular Updates


General Tveitite-(Y) Information

Help on Chemical Formula: Chemical Formula: Ca1-xYxF2+x, x~0.3
Help on Composition: Composition: Molecular Weight = 98.42 gm
   Calcium   28.50 %  Ca   39.88 % CaO
   Yttrium   27.10 %  Y    34.41 % Y2O3
   Fluorine  44.40 %  F    44.40 % F
               -   %   F   -18.69 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.7Y0.3F2.3
Help on Environment: Environment: In pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Hoydalen, Telmark, Norway. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John Peder Tveit (1909-1978), Norwegian miner, who found it in his quarry.
Help on Name Pronunciation: Name Pronunciation: Tveitite-(Y) Say TVEITITE-(Y)
Help on Synonym: Synonym: ICSD 35143
  PDF 29-364
 

Search for Tveitite-(Y) 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.
  

Tveitite-(Y) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0079:1:1.4189
Help on Cell Dimensions: Cell Dimensions: a = 3.924, b = 3.893, c = 5.524, Z = 2; beta = 90.27° V = 84.38 Den(Calc)= 3.87
Help on Crystal System: Crystal System: MonoclinicSpace Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.18(1), 1.265(0.8), 1.949(0.7),
Click Here for Large Tveitite-(Y) 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


Bevan D J M , Strahle J , Greis O , Journal of Solid State Chemistry , 44 (1982) p.75-81, The crystal structure of tveitite, an ordered yttrofluorite mineral, Note: a and b adjusted to match reported bond lengths

 

Physical Properties of Tveitite-(Y)

Help on Color: Color: White, Light yellow.
Help on Luminescence: Luminescence: Fluorescent, Short UV=faint yellow orange.
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: white
 

Optical Properties of Tveitite-(Y)

Help on Optical Data: Optical Data: Biaxial (-), a=1.476, b=1.479, g=1.481, bire=0.0050
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Tveitite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.65 gm/cc
note: Specific Gravity of Tveitite-(Y) =3.87 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0003848067
Boson Index = 0.9996151933
Help on Photoelectric: Photoelectric: PETveitite-(Y) = 37.63 barns/electron
U=PETveitite-(Y) x rElectron Density= 137.31 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tveitite-(Y) is Not Radioactive
 

Tveitite-(Y) Classification
Help on Dana Class: Dana Class: 09.02.01.03 (09)Anhydrous and Hydrated Halides
  (09.02)where A (X)2
  (09.02.01)Fluorite Group
 
09.02.01.01 Fluorite CaF2 F m3m 4/m 3 2/m
 
09.02.01.02 Frankdicksonite BaF2 F m3m 4/m 3 2/m
 
09.02.01.03 Tveitite-(Y) Ca1-xYxF2x,x~0.3 Unk Mono
 
09.02.01.04 IMA2009-014 SrF2 F m3m 4/m 3 2/m
Help on Strunz Class: Strunz Class: 03.AB.30 03 - HALIDES
  03.A - Simple Halides, Without H2O
  03.AB -M:X = 1:2
 
03.AB.30 Tveitite-(Y) Ca1-xYxF2x,x~0.3 Unk Mono
 

Other Tveitite-(Y) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Tveitite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - MinMax(Deutsch)
9 - MinMax(English)
10 - Mineralienatlas (Deutsch)
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

Search for Tveitite-(Y) using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Tveitite-(Y) :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Tveitite-(Y) Mineral Data :

Ask about Tveitite-(Y) 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 Tveitite-(Y) Specimen Label here :

Tveitite-(Y)

Ca1-xYxF2+x, x~0.3
Dana No: 09.02.01.03 Strunz No: 03.AB.30
Locality:

 

Notes: