Mineralogy Database

Pretulite Mineral Data

Search Webmineral :
  
Advertisment

General Pretulite Information

Help on Chemical  Formula: Chemical Formula: ScPO4
Help on Composition: Composition: Molecular Weight = 139.93 gm
   Scandium    32.13 %  Sc   49.28 % Sc2O3
   Phosphorus  22.14 %  P    50.72 % P2O5
   Oxygen      45.74 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sc(PO4)
Help on Environment: Environment: In lazulite-quartz veins in phyllite-micaschist. The scandium dominant analog of xenotime-(Y).
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: The type locality is 100 m southwest of Hollkegel, which is 12 km south-southwest of Murzzuschlag, Fischbacher Alpen, Styria, Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the mountain Pretul, one of the localities at which the mineral occurs.
Help on Name Pronunciation: Name Pronunciation: Pretulite + Pronunciation Say PRETULITE
Help on Synonym: Synonym: ICSD 85552
  IMA1996-024
  PDF 48-477
 

Pretulite Image

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

  Pretulite

Comments: SEM-BSE image of a euhedral crystal of pretulite (left), and proposed crystal forms (right).
Location: Apatite-rich oolitic Ordovician ironstone at Saint-Aubin-des-Châteaux, Armorican Massif, France. Scale: See Picture.
© Canadian Mineralogist

Pretulite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.88116
Help on Cell Dimensions: Cell Dimensions: a = 6.589, c = 5.806, Z = 4; V = 252.07 Den(Calc)= 3.69
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-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): 3.293(1), 1.6927(0.45), 2.4636(0.42),
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: ( 2 1 1) ( 1 0 0)

Warning: this java applet does not work in some browsers because of security restrictions.

 

Physical Properties of Pretulite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Pale pink.
Help on Density: Density: 3.71
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: white
 

Optical Properties of Pretulite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.037 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2126,KPDmeas= 0.2115,KC= 0.2195
Ncalc = 1.81
Help on Optical Data: Optical Data: Uniaxial (+), w=1.709, e=1.86, bire=0.1510.
 

Calculated Properties of Pretulite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.59 gm/cc
note: Specific Gravity of Pretulite =3.69 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0002195344
Boson Index = 0.9997804656
Help on Photoelectric: Photoelectric: PEPretulite = 5.60 barns/electron
U=PEPretulite x rElectron Density= 20.07 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pretulite is Not Radioactive
 

Pretulite Classification

Help on  Dana Class: Dana Class: 38.04.11.05 (38)Anhydrous Phosphates, etc
  (38.04)A+ XO4
  (38.04.11)Zenotime Group (Tetragonal: I41/amd)
 
38.04.11.01 Xenotime-(Y) YPO4 I 41/amd 4/m 2/m 2/m
 
38.04.11.02 Chernovite-(Y) YAsO4 I 41/amd 4/m 2/m 2/m
 
38.04.11.03 Wakefieldite-(Y) YVO4 I 41/amd 4/m 2/m 2/m
 
38.04.11.04 Wakefieldite-(Ce) (Ce,Pb,Pb)VO4 I 41/amd 4/m 2/m 2/m
 
38.04.11.05 Pretulite! ScPO4 I 41/amd 4/m 2/m 2/m
 
38.04.11.06 Xenotime-(Yb)! YbPO4 I 41/amd 4/m 2/m 2/m
 
38.04.11.07 Wakefieldite-(La)! LaVO4 I 41/amd 4mm
 
38.04.11.08 Wakefieldite-(Nd)! NdVO4 I 41/amd 4mm
Help on  Strunz Class: Strunz Class: 08.AD.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AD -With only large cations
 
08.AD.35 Dreyerite BiVO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Chernovite-(Y) YAsO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Pretulite! ScPO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Xenotime-(Y) YPO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Wakefieldite-(Ce) (Ce,Pb,Pb)VO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Wakefieldite-(Y) YVO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Xenotime-(Yb)! YbPO4 I 41/amd 4/m 2/m 2/m
 
08.AD.35 Wakefieldite-(La)! LaVO4 I 41/amd 4mm
 
08.AD.35 Wakefieldite-(Nd)! NdVO4 I 41/amd 4mm
 

Other Pretulite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.83,p625-630,1998) OPTIC PROP.(Am.Min.,Vol.83,p625-630,1998)
Help on See Also: See Also: Links to other databases for Pretulite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

Search for Pretulite using:

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

Visit our Advertisers for Pretulite :

Ask about Pretulite 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 Español

Print or Cut-and-Paste your Pretulite Specimen Label here :

Pretulite

ScPO4
Dana No: 38.04.11.05 Strunz No: 08.AD.35
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.