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About RosenbergiteHide

AlF[F0.5(H2O)0.5]4 · H2O
May also be given as AlF3·3H2O.
3 - 3½
Specific Gravity:
Crystal System:
Named in 1993 for Philip E. Rosenberg (b. 1931), geochemist at Washington State University, USA. He was the first to take note of the mineral.
Isostructural with:
The Al analogue of topsøeite. A hydrated counterpart of oskarssonite. Probably identical to UM2008-27-F:AlHO.

Found as aggregates of minute colorless crystals.

Compare 'UM1988-02-F:AlHO' (a lower-hydrate counterpart) and 'Unnamed (Basic Aluminium Fluoride Monohydrate)'.

Classification of RosenbergiteHide

Approval year:
First published:

C : Complex halides
D : Ino-aluminofluorides
Dana 7th ed.:

3 : AX3

Pronounciation of RosenbergiteHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of RosenbergiteHide

3 - 3½ on Mohs scale
VHN15=103 kg/mm2 - Vickers
Hardness Data:
Good on {001}.
2.1 g/cm3 (Measured)    2.111 g/cm3 (Calculated)

Optical Data of RosenbergiteHide

Uniaxial (-)
RI values:
nω = 1.427 nε = 1.403
Max Birefringence:
δ = 0.024
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:

Chemical Properties of RosenbergiteHide

AlF[F0.5(H2O)0.5]4 · H2O

May also be given as AlF3·3H2O.
IMA Formula:
AlF[F0.5(H2O)0.5]4 · H2O

Crystallography of RosenbergiteHide

Crystal System:
Class (H-M):
4/m - Dipyramidal
Space Group:
Cell Parameters:
a = 7.715 Å, c = 3.648 Å
a:c = 1 : 0.473
Unit Cell V:
217.13 ų (Calculated from Unit Cell)
Tetragonal prisms approx. 0.25 mm in size; found as aggregates of microscopic crystals.
None reported.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006508RosenbergiteOlmi F, Sabelli C, Trosti-Ferroni R (1993) Rosenbergite, AlF[F0.5(H2O)0.5}4.H2O, a new mineral from the Cetine mine (Tuscany, Italy): description and crystal structure European Journal of Mineralogy 5 1167-11741993Cetine mine, Tuscany, Italy0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
5.47 Å(100)
2.44 Å(70)
2.03 Å(70)
1.775 Å(80)
1.725 Å(90)
1.388 Å(70)
1.306 Å(70)
1.127 Å(70)

Type Occurrence of RosenbergiteHide

General Appearance of Type Material:
radiating tufts
Place of Conservation of Type Material:
University of Florence, Florence, Italy, 1934/RI
Geological Setting of Type Material:
In cavities in highly silicified limestones at the Cetine Mine, Tuscany, Itally; and as a sublimate from fumaroles in the crater of Mt. Erebus, Ross Island, Antarctica (Co-Type Localities.0
Olmi, F., Sabelli, C., Trosti-Ferroni, R. (1993) Rosenbergite, AlF[F0.5(H2O)0.5]4•H2O, a new mineral from the Cetine Mine (Tuscany, Italy): description and crystal structure. European Journal of Mineralogy: 5: 1167-1174.

Synonyms of RosenbergiteHide

Other Language Names for RosenbergiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Rosenbergite associated with GypsumCaSO4 · 2H2O

Related Minerals - Nickel-Strunz GroupingHide

3.CD.10ProsopiteCaAl2F4[(OH)4-xFx]Mon. 2/m : B2/b

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for RosenbergiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Olmi, F., Sabelli, C., Trosti-Ferroni, R. (1993) Rosenbergite, AlF[F0.5(H2O)0.5]4•H2O, a new mineral from the Cetine Mine (Tuscany, Italy): description and crystal structure. European Journal of Mineralogy: 5: 1167-1174.
Gaines, Richard V., H. Catherine, W. Skinner, Eugene E. Foord, Brian Mason, Abraham Rosenzweig, Vandall T. King (1997) Dana's New Mineralogy : The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana: 390.

Internet Links for RosenbergiteHide

Localities for RosenbergiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Eastern Antarctica
    • Victoria Land
      • Ross Archipelago
        • Ross Island
1. Rosenberg, P.E. (1988): Aluminum fluoride hydrates, volcanogenic salts from Mount Erebus, Antarctica. American Mineralogist, 73, 855-860; 2. Ciriotti, M.E., Fascio, L., Pasero, M. (2004): Italian Type Minerals. Felici, Ed., Pisa, CD-ROM.
  • North Rhine-Westphalia
    • Cologne
      • Aachen
        • Alsdorf
Collected and analysed by Günter Blaß; Witzke, T., de Wit, F., Kolitsch, U. and Blaß, G. (2015): Mineralogy of the Burning Anna I Coal Mine Dump, Alsdorf, Germany. Chapter 7, pp. 203-240, in: Stracher, G. B., Prakash, A. and Sokol, E. V.: Coal and Peat Fires: A Global Perspective, Volume 3: Case Studies - Coal Fires, Elsevier, 786 pp.
  • Southern Region
    • Vestmannaeyjar
      • Vestmannaeyjar archipelago (Westman islands)
        • Heimaey island
Jacobsen, M.J., Balić-Žunić, T., Mitolo, D., Katerinopoulou, A., Garavelli, A., Jakobsson, S.P. (2014): Oskarssonite, AlF3, a new fumarolic mineral from Eldfell volcano, Heimaey, Iceland. Mineralogical Magazine,78, 215-222. (p. 221)
Italy (TL)
  • Tuscany
    • Siena Province
      • Chiusdino
European Journal of Mineralogy(1993) 5, 1167-1174; Menchetti, S., Batoni, M., Batacchi, C., Borselli, G., Brogi, A., Ceccantini, L., Fassina, B., Marchesini, M., Rossellini, A. & Ruggieri, G. (2015): Le Cetine di Cotorniano. Miniera e minerali. Associazione Micro-Mineralogica Italiana, Cremona, 354 p.
  • Silesian Voivodeship
    • Wodzisław County
      • Radlin
Kruszewski, Ł., Fabiańska, M.J., Segit, T., Kusy, D., Motyliński, R., Ciesielczuk, J., Deput, E., (2019): Carbon-nitrogen compounds, alcohols, mercaptans, monoterpenes, acetates, aldehydes, ketones, SF6, PH3, and other fire gases in coal-mining waste heaps of Upper Silesian Coal Basin (Poland) – a re-investigation by means of in situ FTIR external database approach. Science of The Total Environment (in press)
Mineral and/or Locality  
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