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Oskarssonite
A valid IMA mineral species
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About Oskarssonite
Níels Ö. Óskarsson
Formula:
AlF3
Crystal System:
Trigonal
Name:
Named by M.J. Jacobsen et al. in 2012 in honor of Níels Örn Óskarsson (1944-), volcanologist at the University of Iceland, for his work on Icelandic fumaroles.
Type Locality:
Isostructural with:
The low-temperature form of AlF3. The Al analogue of waimirite-(Y). Anhydrous counterpart of rosenbergite and 'UM1988-02-F:AlHO'.
The mineral might have first been found by Rosenberg (1988) at Mt. Erebus.
The mineral might have first been found by Rosenberg (1988) at Mt. Erebus.
Unique Identifiers
Mindat ID:
43853
Long-form identifier:
mindat:1:1:43853:7
IMA Classification of Oskarssonite
Classification of Oskarssonite
3.A0.
3 : HALIDES
A : Simple halides, without H2O
0 :
3 : HALIDES
A : Simple halides, without H2O
0 :
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Osk | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Oskarssonite
Mindat Formula:
AlF3
Elements listed:
Crystallography of Oskarssonite
Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Setting:
R3
Cell Parameters:
a = 4.9817(4) Å, c = 12.387(1) Å
Ratio:
a:c = 1 : 2.487
Unit Cell V:
266.23 ų
Z:
6
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.54 Å | (100) |
| 2.131 Å | (13) |
| 2.066 Å | (8) |
| 2.044 Å | (8) |
| 1.771 Å | (20) |
| 1.613 Å | (8) |
| 1.590 Å | (15) |
| 1.574 Å | (10) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 36 : Carbonatites, kimberlites, and related igneous rocks | |
| Stage 7: Great Oxidation Event | <2.4 |
| 45b : [Other oxidized fumarolic minerals] |
Type Occurrence of Oskarssonite
General Appearance of Type Material:
Sub-micron-sized crystals forming a white powder.
Place of Conservation of Type Material:
Icelandic Institute of Natural History, Gardabaer, Iceland, NI24489.
Natural History Museum of Denmark, Copenhagen, Denmark, 2012.112, 2012.113, 2012.114.
Natural History Museum of Denmark, Copenhagen, Denmark, 2012.112, 2012.113, 2012.114.
Geological Setting of Type Material:
Surface of fumaroles on the Eldfell volcano, Heimaey Island, Iceland
Associated Minerals at Type Locality:
Synonyms of Oskarssonite
Other Language Names for Oskarssonite
Dutch:Oskarssoniet
German:Oskarssonit
Relationship of Oskarssonite to other Species
Other Members of Oskarssonite Subgroup:
| Waimirite-(Y) | YF3 | Orth. mmm(2/m2/m2/m) : Pnma |
Related Minerals - Strunz-mindat Grouping
| 3.A0. | Flinteite | K2ZnCl4 |
| 3.A0. | Mellizinkalite | K3Zn2Cl7 |
| 3.A0. | Sanguite | KCuCl3 |
| 3.A0. | Waimirite-(Y) | YF3 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Oskarssonite
mindat.org URL:
https://www.mindat.org/min-43853.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Oskarssonite
Reference List:
Rosenberg, Philip E. (1988) Aluminum fluoride hydrates, volcanogenic salts from Mount Erebus, Antarctica. American Mineralogist, 73 (7-8) 855-860
Daniel, P, Bulou, A, Rousseau, M, Nouet, J, Fourquet, J L, Leblanc, M, Burriel, R (1990) A study of the structural phase transitions in AlF3: X-ray powder diffraction, differential scanning calorimetry (DSC) and Raman scattering investigations of the lattice dynamics and phonon spectrum. Journal of Physics: Condensed Matter, 2 (26). 5663-5677 doi:10.1088/0953-8984/2/26/003
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 16. Mineralogical Magazine, 77 (6) 2695-2709 doi:10.1180/minmag.2013.077.6.01
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 (1) 215-222 doi:10.1180/minmag.2014.078.1.15
Localities for Oskarssonite
Showing 6 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Antarctica | |
| Rosenberg (1988) |
Brazil | |
| Kaminsky et al. (2013) +1 other reference |
| Kaminsky et al. (2015) | |
Iceland | |
| Balić-Žunić et al. (2014) |
| Jacobsen et al. (2014) +1 other reference |
Spain | |
| Sánchez-España et al. (2024) |
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Sorriso river, Juína, Mato Grosso, Brazil