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Rosenbergite Mineral Data
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General Rosenbergite Information
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 Chemical Formula: |
AlF3•3(H2O) |
| Composition: |
Molecular Weight = 157.02 gm |
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Aluminum 17.18 % Al 32.47 % Al2O3 |
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Hydrogen 3.85 % H 34.42 % H2O |
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Oxygen 30.57 % O |
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Fluorine 48.40 % F 48.40 % F |
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- %
F -20.38 % -O=F2 |
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______ ______ |
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100.00 % 94.91 % = TOTAL OXIDE |
| Empirical Formula: |
AlF4•3(H2O) |
| Environment: |
Cavities in highly silicified limestone (Italy) and fumaroles (Antarctica). |
| IMA Status: |
Approved IMA 1993 |
| Locality: |
Cetine mine, Tuscany, Italy and Mt. Erebus, Ross Island, Antarctica. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Philip E. Rosenberg (1931-), U.S. Geochemist, Washington State University. |
| Name Pronunciation: |
Rosenbergite + Pronunciation  |
| Synonym: |
ICSD 66691 |
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IMA1992-046 |
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PDF 46-1459 |
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Rosenbergite Image |
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Images:
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Rosenbergite
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 |
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Rosenbergite Crystallography
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| Axial Ratios: |
a:c = 1:0.47284 |
| Cell Dimensions: |
a = 7.715, c = 3.648, Z = 2; V = 217.13 Den(Calc)= 2.40 |
| Crystal System: |
Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: P 4/n |
| X Ray Diffraction: |
By Intensity(I/Io): 5.47(1), 1.725(0.85), 1.775(0.78), |
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Physical Properties of Rosenbergite
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| Cleavage: |
{???} Good |
| Color: |
Colorless. |
| Density: |
2.1 |
| Diaphaneity: |
Transparent |
| Hardness: |
3-3.5 - Calcite-Copper Penny |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
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Optical Properties of Rosenbergite
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| Optical Data: |
Uniaxial (-), e=1.403, w=1.427, bire=0.0240. |
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Calculated Properties of Rosenbergite
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| Electron Density: |
Bulk Density (Electron Density)=2.41 gm/cc
note: Specific Gravity of Rosenbergite =2.40 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0001525037
Boson Index = 0.9998474963 |
| Photoelectric: |
PERosenbergite = 0.87 barns/electron
U=PERosenbergite x rElectron Density= 2.09 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rosenbergite is Not Radioactive |
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Rosenbergite Classification
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| Dana Class: |
09.03.06.01 (09)Anhydrous and Hydrated Halides |
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(09.03)Dana Type |
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(09.03.06)Dana Group |
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09.03.06.01 Rosenbergite AlF3•3(H2O) P 4/n 4/m |
| Strunz Class: |
03.CD.05 03 - HALIDES |
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03.C - Complex Halides |
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03.CD -Ino-aluminofluorides |
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03.CD.05 Rosenbergite AlF3•3(H2O) P 4/n 4/m |
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Other Rosenbergite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.79,p765,1994) OPTIC PROP.(Am.Min.,Vol.79,p765,1994) |
| 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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Rosenbergite Specimen Label here :
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Rosenbergite
AlF3•3(H2O)
Dana No: 09.03.06.01 Strunz No: 03.CD.05
Locality:
Notes:
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