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Oskarssonite

Collectors Summary

Crystal System trigonal, R3c

Chemism

Chemical formula

AlF3

Empirical formula (analysis)

AlF2.6(OH)0.5

Additional chem. information

Niedertemperturform von AlF3

Chemical composition

Aluminium, Fluor

Unit weight: 84.88107515 u; Number of atoms in the formula: 4.6

Info

Empirical formula:

AlF2.6(OH)0.5

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.59

0.5

10.87

1.0079470

0.5039735

Oxygen

O

9.42

0.5

10.87

15.9994300

7.9997150

Fluorine

F

58.19

2.6

56.52

18.9984033

49.3958485

Aluminium

Al

31.79

1

21.74

26.9815382

26.9815382

Analysis wt%

Al : 31.70; F : 58.41, O : 9.22; total 99.33 wt.%

Strunz 9th edition incl. updates

3.AC.25

3: Halide (Fluoride, Chloride, Bromide, Iodide)
A: Einfache Halogenide ohne H2O
C: M:X = 1:3
25:

Lapis Classification

III/A.09-005

III: HALOGENIDE (Fluoride, Chloride, Bromide, Jodide)
A: Einfache Halogenide
9: Wasserfrei, Metall : Halogen = 1:2, 1:3

IMA status

anerkannt - CNMNC Newsletter No. 16, August 2013

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Perovskite supergroup  ⇒ Non-stoichiometric perovskites  ⇒ Oskarssonit subgroup

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

167

Space Group

R3c

Cell parameters a (Å)

4.9817

Cell parameters b (Å)

-

Cell parameters c (Å)

12.387

Cell parameters a/b or c/a

2.487

Cell parameters c/b

-

Z

6

Volume (ų)

266.227

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

3.54(100), 2.131(13), 2.066(8), 2.044(8), 1.771(20), 1.613(8), 1.590(15), 1.574(10)

XRD chart Oskarssonite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.193 (berechnet)

3.176 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Island/Vestmannaeyjar archipelago (Westman Inseln)/Heimaey-Insel/Eldfell

Type material

Icelandic Institute of Natural History, Gardabaer, Iceland

Collection number of type material

NI 24489

Preface

Name from

Isländischer Vulkanologe Niels Oskarsson

Author (Name, Year)

Morten Jølnæs Jacobsen, Tonči Balić-Žunić, Donatella Mitolo, Anna Katerinopoulou, Anna Garavelli und Sveinn Peter Jakobsson (2012)

References

Jacobsen, M.J., Balić-Žunić, T., Mitolo, D., Katerinopoulou, A., Garavelli, A. and Jakobsson, S.P. (2013) Oskarssonite, IMA 2012-088. CNMNC Newsletter No. 16, August 2013, page 2697; Mineralogical Magazine, 77, 2695-2709.

Jacobsen, M.J., Balić-Žunić, T., Mitolo, D., Katerinopoulou, A., Garavelli, A., Jakobsson, S.P. - Oskarssonite, AlF3, a new fumarolic mineral from Eldfell volcano, Heimaey, Iceland. Mineralogical Magazine, 78 (2014), 215-222.

IMA group assignments

Other languages

German

Oskarssonit

English

Oskarssonite

CNMNC (IMA)-Number

IMA 2012-088

CNMNC symbol

Symbol

Osk

Locations with GPS information

IDs

GUSID (Global unique identifier short form) eT9FAmJWm0iQz8ULI-TJTA
GUID (Global unique identifier) 02453F79-5662-489B-90CF-C50B23E4C94C
Database ID 7595