Grattarolaite Mineral Data

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


General Grattarolaite Information

Help on Chemical Formula: Chemical Formula: Fe+++3O3(PO4)
Help on Composition: Composition: Molecular Weight = 310.51 gm
   Iron        53.96 %  Fe   77.14 % Fe2O3
   Phosphorus   9.98 %  P    22.86 % P2O5
   Oxygen      36.07 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+3O3(PO4)
Help on Environment: Environment: As nodules about 1 cm in diameter with cavities lined with aggregates up to 1 mm long.
Help on IMA Status: IMA Status: Approved IMA 1995 (Dana # Added)
Help on Locality: Locality: The Castelnovo mine, Santa Barbara lignite area, Upper Arno River Vally, 30 km SE of Florence, Italy Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Giuseppe Grattarola (1905-1988), professor of mineralogy at the University of Florence, Italy.
Help on Name Pronunciation: Name Pronunciation: Grattarolaite + Pronunciation Say GRATTAROLAITE
Help on Synonym: Synonym: ICSD 36207
  IMA1995-037
  PDF 37-61
 

Grattarolaite Image

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

Grattarolaite   Rodolicoite

Comments: Brown grattarolaite, intimately intergrown with brown rodolicoite.
Location: Castelnuovo Mine, Santa Barbara lignite district, San Giovanni Valdarno, Valdarno (Val d'Arno), Arezzo Province, Tuscany, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Grattarolaite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.85751
Help on Cell Dimensions: Cell Dimensions: a = 7.994, c = 6.855, Z = 4; V = 379.37 Den(Calc)= 5.44
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.09(1), 1.623(0.23), 2.078(0.2),
Click Here for Large Grattarolaite 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


Modaressi A , Courtois A , Gerardin R , Malaman B , Gleitzer C , Journal of Solid State Chemistry , 47 (1983) p.245-255, Fe3PO7, un cas de coordinence 5 du fer trivalent, etude structurale et magnetique, Locality: synthetic

 

Physical Properties of Grattarolaite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brown, Red brown.
Help on Density: Density: 4.07
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: brown
 

Optical Properties of Grattarolaite

Help on Optical Data: Optical Data: NCalc= 2.55 - from Gladstone-Dale relationship (KC = 0.2848) where Ncalc=Dcalc*KC+1
NCalc= 2.16 - from Gladstone-Dale relationship (KC = 0.2848) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Grattarolaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.22 gm/cc
note: Specific Gravity of Grattarolaite =5.44 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEGrattarolaite = 16.85 barns/electron
U=PEGrattarolaite x rElectron Density= 87.94 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Grattarolaite is Not Radioactive
 

Grattarolaite Classification
Help on Dana Class: Dana Class: 38.05.12.01 (38)Anhydrous Phosphates, etc
  (38.05)with miscellaneous formulae
  (38.05.12)Dana Group
 
38.05.12.01 Grattarolaite! Fe3O3(PO4) R 3m 3m
Help on Strunz Class: Strunz Class: 08.BE.10 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BE -With only medium-sized cations, (OH, etc.):RO4 > 2:1
 
08.BE.10 Grattarolaite! Fe3O3(PO4) R 3m 3m
 

Other Grattarolaite Information
Help on References: References: NAME( MinRec) PHYS. PROP.(Eur. J. Min.,Vol.9,p1101-1106,1997)
Help on See Also: See Also: Links to other databases for Grattarolaite :
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

Search for Grattarolaite using:

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

Visit our Advertisers for Grattarolaite :

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

Ask about Grattarolaite 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 Grattarolaite Specimen Label here :

Grattarolaite

Fe+++3O3(PO4)
Dana No: 38.05.12.01 Strunz No: 08.BE.10
Locality:

 

Notes: