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Pinawa
Basic information Name: Pinawa
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: unknown
Country: Canada
Mass:help 2.5 kg
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Iron, IAB-MG
Recommended:  Iron, IAB-MG    [explanation]

This is 1 of 112 approved meteorites classified as Iron, IAB-MG.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 17 Apr 2017
Writeuphelp
Writeup from MB 106:

Pinawa        50°12.746’N, 95°57.058’W

Manitoba, Canada

Find: 1998 or 1999

Classification: Iron meteorite (IAB-MG)

History: The meteorite was found in 1998 or 1999 by Derek Erstelle in a probable moraine deposit approximately 8.5 km NW of the town of Pinawa. It was purchased in 2017 by R. Hennie.

Physical characteristics: (S. Kissin, LHU) The meteorite has a lenticular shape, and a red-brown exterior. Oxidation has exposed the kamacite lamellae, although it has not affected the interior of the specimen except along some major fractures.

Petrography: (S. Kissin, LHU) The meteorite is an octahedrite, although its kamacite lamellae have been stretched and likely do not preserve original bandwidths. The bandwidth is greater than 1 mm in general, so the meteorite is likely a coarse octahedrite. Neumann lines are irregularly distributed and seem to be present only in areas where there is less mechanical deformation. There is good preservation of taenite lamellae, although the taenite bands are very narrow. Net plessite is sporadic, and it, as in the case of the taenite bands, is deformed. Globular schreibersite is fairly abundant, and although it displays fracturing, the rounded forms do not show evidence of deformation, with kamacite lamellae wrapping around the schreibersite.

Geochemistry: (S. Kissin, LHU) Ni=75.7, Co=3.75 (both mg/g); As=11.7, Au=1.52, Cu=139, Ga=65, Ge=200, Ir=1.59, Pt=8.3, Sb=0.17, W=0.96 (all μg/g). Obtained by neutron activation analysis (Actlabs).

Classification: (S. Kissin, LHU) IAB-MG, probable coarse octahedrite, with evidence of mechanical deformation.

Specimens: Type specimen consisting of one specimen of 48.6 g and ~2 g of fragments at UAb. Main mass with the owner.

Data from:
  MB106
  Table 0
  Line 0:
State/Prov/County:Manitoba
Origin or pseudonym:Probable moraine deposit
Date:1998 or 1999
Latitude:50°12.746'N
Longitude:95°57.058'W
Mass (g):2500
Pieces:1
Class:Iron, IAB-MG
Shock stage:high
Weathering grade:high
Classifier:S. Kissin, LHU
Type spec mass (g):50.6
Type spec location:UAb
Main mass:R. Hennie (Calgary)
Finder:Derek Erstelle
Comments:Submitted by C. Herd
Institutions
   and collections
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
LHU: Department of Geology, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B 5E1, Canada (institutional address; updated 23 Dec 2011)
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:

Canada
Coordinates:
     Recommended::   (50° 12' 45"N, 95° 57' 3"W)

Statistics:
     This is 1 of 6 approved meteorites from Manitoba, Canada (plus 2 impact craters)
     This is 1 of 65 approved meteorites from Canada (plus 5 unapproved names) (plus 31 impact craters)
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