Scheelite Mineral Data

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



[Newest Minerals] [Equipment] [Analytical Services] [About Us] [Mineral Gallery] [eBay Store]
See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Rare Minerals, Meteorites, Equipment and Analytical Services
Excalibur Mineral Company, World leaders in the supply of rare species
Serving the scientific and collector communities since 1974


General Scheelite Information

Help on Chemical Formula: Chemical Formula: CaWO4
Help on Composition: Composition: Molecular Weight = 287.93 gm
   Calcium   13.92 %  Ca   19.48 % CaO
   Tungsten  63.85 %  W    80.52 % WO3
   Oxygen    22.23 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca(WO4)
Help on Environment: Environment: A primary tunsten ore mineral commonly found in contact-metamorphic deposits, high-temperature hydrothermal veins, greisens, and granitic pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1821
Help on Locality: Locality: Bispberg iron mine, Säter, Dalarna, Sweden Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Swedish chemist, Karl Wilhelm Scheele (1742-1786).
Help on Name Pronunciation: Name Pronunciation: Scheelite + Pronunciation Say SCHEELITE
Help on Synonym: Synonym: Calcium Tungstate
  Cuproscheelite - mixture of scheelite + copper tungstate
  ICSD 60547
  PDF 41-1431
 

Scheelite Image

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

Scheelite

Comments: Orange scheelite with white mica.
Location: Pingwu, Sichuan, China. Scale: 9.5 x 9 cm.
© Fabre Minerals

Scheelite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.1694
Help on Cell Dimensions: Cell Dimensions: a = 5.242, c = 11.372, Z = 4; V = 312.49 Den(Calc)= 6.12
Help on Crystal System: Crystal System: Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 41/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.1(1), 4.76(0.55), 3.072(0.3),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 1 0 3) ( 1 0 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.
Click Here for Large Scheelite 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


Hazen R M , Finger L W , Mariathasan J W E , Journal of Physics and Chemistry of Solids , 46 (1985) p.253-263, High-pressure crystal chemistry of scheelite-type tungstates and molybdates, Note: P = 0.0001 GPa, in air

View Additional jPOWD Structure files for Scheelite
[1] [2] [3] [4] [5]
 

Physical Properties of Scheelite

Help on Cleavage: Cleavage: {010} Distinct
Help on Color: Color: Colorless, White, Pale yellow, Brownish yellow, Reddish yellow.
Help on Density: Density: 5.9 - 6.12, Average = 6.01
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Columnar - Forms columns
Help on Habit: Habit: Disseminated - Occurs in small, distinct particles dispersed in matrix.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luminescence: Luminescence: Fluorescent, Short UV=bright bluish white.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Scheelite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.136 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.152 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1515,KPDmeas= 0.1543,KC= 0.1786
Ncalc = 2.05 - 2.09
Help on Optical Data: Optical Data: Uniaxial (+), w=1.918-1.92, e=1.934-1.937, bire=0.0160-0.0170.
 

Calculated Properties of Scheelite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.26 gm/cc
note: Specific Gravity of Scheelite =6.01 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEScheelite = 789.14 barns/electron
U=PEScheelite x rElectron Density=4,150.96 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Scheelite is Not Radioactive
 

Scheelite Classification
Help on Dana Class: Dana Class: 48.01.02.01 (48)Anhydrous Molybdates and Tungstates
  (48.01)where A XO4
  (48.01.02)Scheelite Series
 
48.01.02.01 Scheelite CaWO4 I 41/a 4/m
 
48.01.02.02 Powellite CaMoO4 I 41/a 4/m
Help on Strunz Class: Strunz Class: 07.GA.05 07 - SULFATES (SELENATES, TELLURATES)
  07.G - Molybdates, Wolframates and Niobates
  07.GA -Without additional anions or H2O
 
07.GA.05 Fergusonite-(Ce)* (Ce,La,Y)NbO4 I 41/a 4/m
 
07.GA.05 Fergusonite-(Nd)* (Nd,Ce)(Nb,Ti)O4 I 41/a 4/m
 
07.GA.05 Fergusonite-(Y) YNbO4 I 41/a 4/m
 
07.GA.05 Stolzite PbWO4 I 41/a 4/m
 
07.GA.05 Scheelite CaWO4 I 41/a 4/m
 
07.GA.05 Powellite CaMoO4 I 41/a 4/m
 
07.GA.05 Wulfenite PbMoO4 I 41/a 4/m
 

Other Scheelite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Mason68)
Help on See Also: See Also: Links to other databases for Scheelite :
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 - GeoScienceWorld
9 - Glendale Community College
10 - Google Images
11 - Google Scholar
12 - Handbook of Mineralogy (MinSocAm)
13 - Handbook of Mineralogy (UofA)
14 - MinDAT
15 - Mineralienatlas (Deutsch)
16 - Online Mineral Museum
17 - QUT Mineral Atlas
18 - Ruff.Info
19 - Scandinavian mineral gallery
20 - University of Colorado - Mineral Structure Data
21 - WWW-MINCRYST

Search for Scheelite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Scheelite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Scheelite Mineral Data :

Ask about Scheelite 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 Scheelite Specimen Label here :

Scheelite

CaWO4
Dana No: 48.01.02.01 Strunz No: 07.GA.05
Locality:

 

Notes: