Mineralogy Database

Rosenbergite Mineral Data

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General Rosenbergite Information

Help on Chemical  Formula: Chemical Formula: AlF3•3(H2O)
Help on Composition: Composition: Molecular Weight = 157.02 gm
   Aluminum  17.18 %  Al   32.47 % Al2O3
   Hydrogen   3.85 %  H    34.42 % H2O
   Oxygen    30.57 %  O
   Fluorine  48.40 %  F    48.40 % F
               -   %   F   -20.38 % -O=F2    
            ______        ______ 
            100.00 %       94.91 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: AlF4•3(H2O)
Help on Environment: Environment: Cavities in highly silicified limestone (Italy) and fumaroles (Antarctica).
Help on IMA Status: IMA Status: Approved IMA 1993
Help on Locality: Locality: Cetine mine, Tuscany, Italy and Mt. Erebus, Ross Island, Antarctica. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Philip E. Rosenberg (1931-), U.S. Geochemist, Washington State University.
Help on Name Pronunciation: Name Pronunciation: Rosenbergite + Pronunciation Say ROSENBERGITE
Help on Synonym: Synonym: ICSD 66691
  PDF 46-1459

Rosenbergite Image

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Comments: Colorless prismatic crystals of rosenbergite on a dark matrix.
Location: Cetine di Cotorniano Mine (Cetine Mine; Tafone Mine), Rosia, Siena, Tuscany, Italy. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Rosenbergite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.47284
Help on Cell Dimensions: Cell Dimensions: a = 7.715, c = 3.648, Z = 2; V = 217.13 Den(Calc)= 2.40
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: P 4/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.47(1), 1.725(0.85), 1.775(0.78),

Physical Properties of Rosenbergite

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Colorless.
Help on Density: Density: 2.1
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Rosenbergite

Help on Optical Data: Optical Data: Uniaxial (-), e=1.403, w=1.427, bire=0.0240.

Calculated Properties of Rosenbergite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.41 gm/cc
note: Specific Gravity of Rosenbergite =2.40 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001525037
Boson Index = 0.9998474963
Help on Photoelectric: Photoelectric: PERosenbergite = 0.87 barns/electron
U=PERosenbergite x rElectron Density= 2.09 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rosenbergite is Not Radioactive

Rosenbergite Classification

Help on  Dana Class: Dana Class: (09)Anhydrous and Hydrated Halides
  (09.03)Dana Type
  (09.03.06)Dana Group Rosenbergite AlF3•3(H2O) P 4/n 4/m
Help on  Strunz Class: Strunz Class: 03.CD.05 03 - HALIDES
  03.C - Complex Halides
  03.CD -Ino-aluminofluorides
03.CD.05 Rosenbergite AlF3•3(H2O) P 4/n 4/m

Other Rosenbergite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.79,p765,1994) OPTIC PROP.(Am.Min.,Vol.79,p765,1994)
Help on See Also: See Also: Links to other databases for Rosenbergite :
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

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Dana No: Strunz No: 03.CD.05





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