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Parkajoki
Basic information Name: Parkajoki
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2016
Country: Sweden
Mass:help 42 kg
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Iron, IVA
Recommended:  Iron, IVA    [explanation]

This is 1 of 80 approved meteorites (plus 1 unapproved name) classified as Iron, IVA.   [show all]
Search for other: Iron meteorites, IVA irons, and Metal-rich meteorites
Comments: Approved 18 Dec 2017
Writeuphelp
Writeup from MB 106:

Parkajoki        67°47’9.4’’N, 23°21’34.8’’E

Norrbottens, Sweden

Find: 2014

Classification: Iron meteorite (IVA)

History: Found by Thomas Österberg in 2014 while searching with metal detectors for Muonionalusta specimens near the stream Parkajoki in Norbotten län, Sweden. The meteorite was purchased by Ewa and Uwe Eger (Space Rocks, Germany) at the mineral show in Sainte-Marie-aux-Mines, France, in 2016.

Physical characteristics: Single mass of irregular shape with a light to dark brown weathered exterior.

Petrography: (K. Metzler, IfP) Octahedrite structure with kamacite and taenite lamellae, together with plessite fields. Large troilite nodules with sizes up to 7x5 cm occur. Apparent band width (µm) of kamacite is 180±100 (50-380; n=16), compared to 400 µm for Muonionalusta (Goldstein 1969; in Meteorite Research, ed. P.M. Millman, Reidel Publishing Company, Dordrecht-Holland).

Geochemistry: Mineral compositions and geochemistry: Bulk Ni content is 9.4 wt% (SEM-EDX), compared to 8.4 wt% in Muonionalusta (Goldstein 1969). Bulk trace element concentration was determined on 3 samples by dissolution ICP-MS (M. Matthes, IfP). Additionally, 3 samples from the Muonionalusta (Muo) meteorite were analyzed by the same method for comparison (shown in parenthesis): Co wt% 0.42-0.43 (Muo 0.37-0.40). Following data in ppm: Cu 248-254 (Muo 109-122); Ge 0.16-0.19 (Muo 0.12-0.16); W 0.26-0.36 (Muo 0.31-0.37); Ga 1.50-1.52 (Muo 1.93-2.23); As 7.1-7.5 (Muo 10.3-11.2); Mo 4.2-4.4 (Muo 5.5-6.1); Ru 1.53-1.69 (Muo 2.40-2.66); Ir 0.54-0.76 (Muo 1.08-1.17); Pt 2.25-2.48 (Muo 3.53-3.93).

Classification: Structure and bulk chemical data are consistent with a IVA iron meteorite (finest to fine octahedrite). Obvious chemical and structural differences to the Muonionalusta meteorite.

Data from:
  MB106
  Table 0
  Line 0:
State/Prov/County:Norrbottens
Place of purchase:Sainte-Marie-aux-Mines, France
Date:2014
Latitude:67°47'9.4''N
Longitude:23°21'34.8''E
Mass (g):42000
Pieces:1
Class:Iron, IVA
Classifier:K. Metzler, M. Matthes, IfP
Type spec mass (g):25
Type spec location:IfP
Main mass:Space Rocks, Ewa and Uwe Eger, Bochum, Germany
Finder:Thomas Österberg, 32545 Växjö, Sweden
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
MUO: Department of Geology, Miami University, Oxford, OH 45056, United States (institutional address)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:

Sweden
Coordinates:
     Recommended::   (67° 47' 9"N, 23° 21' 35"E)

Statistics:
     This is 1 of 2 approved meteorites from Norrbottens, Sweden
     This is 1 of 14 approved meteorites from Sweden (plus 71 unapproved names) (plus 8 impact craters)
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