7.5g WHITECOURT Meteorite | IIIAB Iron Meteorite
On Offer: 7.5 gram Whitecourt Iron Meteorite.
Type: Iron, IIIAB
Official name: Whitecourt
Description: A 7.5 gram Whitecourt meteorite.
History: Four small fragments were found buried adjacent to a circular depression by two local residents using a metal detector. The circular depression was subsequently confirmed as a 36 m diameter Late Holocene impact crater based on morphology, identification of impact ejecta and crater fill, and presence of impact melt (C. Herd and D. Froese, University of Alberta), and further fragments were recovered.
What you get: 7.5 gram Whitecourt Meteorite Specimen as Shown, Membrane Storage/Display Box, signed Certificate of Authenticity
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| Whitecourt | |||||||||||||||||||||||
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| Basic information |
Name: Whitecourt This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2007 Country: Canada Mass: 5.37 kg |
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| Classification history: |
This is 1 of 303 approved meteorites classified as Iron, IIIAB. [show all] Search for other: IIIAB irons, Iron meteorites, and Metal-rich meteorites |
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| Comments: | Approved 17 Apr 2008 Revised 3 Oct 2009: Added missing coords |
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| Writeup |
Writeup from MB 94: Whitecourt 53°59.95’N, 115°35.85’W Alberta, Canada Find: 1 July 1 2007 Iron, medium octahedrite (IIIAB) History: Four small fragments were found buried adjacent to a circular depression by two local residents using a metal detector. The circular depression was subsequently confirmed as a 36 m diameter Late Holocene impact crater based on morphology, identification of impact ejecta and crater fill, and presence of impact melt (C. Herd and D. Froese, University of Alberta), and further fragments were recovered. Physical characteristics: The meteorite consists of 74 samples with a total mass of 5372 g. The samples were found buried up to 25 cm and have a red-brown exterior. Petrography: (C. Herd, University of Alberta, UAb) Widmanstätten pattern with an average bandwidth of 0.8 ± 0.2 mm and areas of plessite are evident on polished and etched surfaces. Locally, kamacite lamellae are coarser and taenite lamellae are offset as a result of shock deformation and recrystallization. Rare Fe-Ni phosphide inclusions are present. Mineral compositions and geochemistry: Bulk composition: INAA data (J. Duke, UAb): Ni = 8.11 ± 0.13 wt%, Co = 4950 ± 100 μg/g, Ir 10.3 ± 0.5 μg/g, (uncertainties 1σ, 68% confidence level), Ge ≤ 40 μg/g, indicate the IIIAB group. Classification: Iron, IIIAB medium octahedrite, extensive shock, moderate weathering. Type specimens: A total of 2.4 kg is on deposit at UAb. The remainder of the known material is held by the anonymous finders. |
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| Data from: MB94 Table 3 Line 5: |
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