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Topsøeite

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Haldor Frederik Axel Topsøe
Formula:
FeF[F0.5(H2O)0.5]4 · H2O
Colour:
Yellow
Specific Gravity:
2.330 (Calculated)
Crystal System:
Tetragonal
Name:
Named in the honor of the Danish Topsøe family, including the chemist and crystallographer Haldor Frederik Axel Topsøe (29 April 1842 in Skælskør, Slagelse Municipality, Denmark – 31 December 1935 in Frederiksberg, Denmark), and his son Haldor Topsøe (1913-2013), a ingenieur and founder of the catalysis company Haldor Topsøe, and his grandson Henrik Topsøe (1944 - ).
Isostructural with:
The Fe3+ analogue of Rosenbergite. The first iron fluoride mineral.


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Classification of TopsøeiteHide

Approved, Pending publication
Approval Year:
2016

Physical Properties of TopsøeiteHide

Colour:
Yellow
Density:
2.330 g/cm3 (Calculated)

Chemical Properties of TopsøeiteHide

Formula:
FeF[F0.5(H2O)0.5]4 · H2O
IMA Formula:
FeF3(H2O)3

Crystallography of TopsøeiteHide

Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
P4/n
Setting:
P4/n
Cell Parameters:
a = 7.8384(4) Å, c = 3.8718(2) Å
Ratio:
a:c = 1 : 0.494
Unit Cell V:
237.89 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.52(100)
3.90(74)
3.45(72)
3.16(40)
2.76(45)
2.470(54)
1.874(33)
1.748(45)

Occurrences of TopsøeiteHide

Paragenetic Mode(s):
•  Fumarolic

Type Occurrence of TopsøeiteHide

Place of Conservation of Type Material:
Mineralogical collections of the Icelandic Institute of Natural History, Gardabaer, Iceland (sample number NI 15515)
Associated Minerals at Type Locality:

Synonyms of TopsøeiteHide

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 TopsøeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Balić-́Žunic, T., Garavelli, A. Mitolo, D. (2017): Topsøeite, IMA 2016-113. CNMNC Newsletter No. 36, April 2017, page 408; Mineralogical Magazine: 81: 403–409; http://forum.amiminerals.it/viewtopic.php?f=5&t=13630 (2017)
Balić-Žunić, T., Garavelli, A., & Mitolo, D. (2018). Topsøeite, FeF3 (H2O) 3, a new fumarolic mineral from the Hekla Volcano, Iceland. European Journal of Mineralogy.

Internet Links for TopsøeiteHide

Localities for TopsøeiteHide

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.
Iceland (TL)
 
  • Southern Region
Balić-́Žunic, T., Garavelli, A. Mitolo, D. (2017): Topsøeite, IMA 2016-113. CNMNC Newsletter No. 36, April 2017, page 408; Mineralogical Magazine: 81: 403–409; http://forum.amiminerals.it/viewtopic.php?f=5&t=13630 (2017)
Mineral and/or Locality  
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