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Northwest Africa 16209
Basic information Name: Northwest Africa 16209
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16209
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 9.62 kg
Meteoritical Bulletin:  MB 112  (2024)  Iron, IIIAB
Recommended:  Iron, IIIAB    [explanation]

This is 1 of 346 approved meteorites classified as Iron, IIIAB.   [show all]
Search for other: IIIAB irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 21 Oct 2023
Writeup from MB 112:

Northwest Africa 16209 (NWA 16209)

(Northwest Africa)

Purchased: Dec 2021

Classification: Iron meteorite (IIIAB)

History: Seventeen pieces with a total mass of 9616 g were purchased by Mr. Jasper Spencer from a Moroccan dealer in December 2021 via Facebook Messenger; the largest piece is 2051 g. Mr. Spencer was told that this material was found in Algeria in 2021. According to Mr. Spencer, some of the seventeen pieces are "flight-shaped." Mr. Spencer donated two pieces (294.1 and 204.7 g) to Cascadia.

Physical characteristics: Physical Characteristics: The exteriors of both pieces donated to Cascadia are brown with orange-red patches. Both pieces have remnant fusion crust on one side, with poorly developed regmaglypts. The opposite sides of both pieces show parallel flat steps that represent kamacite lamellae. On one sample, two steps can be seen to have triangular sides; on the other sample, three parallel steps are partially detached from the main mass.

Petrography: (A. Ruzicka and M. Hutson, Cascadia): Parallel kamacite plates in hand specimen were measured to have a band width of approximately 0.7 to 1 mm. The cut face shows metal with minor rust filling irregular fractures.

Geochemistry: (C. Herd, P. Hill, and S. DuFrane, UAb): ICP-MS data was obtained on a mass of 0.1003 grams of the meteorite, using a sample of North Chile (Filomena) as a standard. Co=0.459, Ni=6.99 (both wt%); Cu=158, Ga=18.8, Ge=36.8, Ru=12.7, Pd=3.30, W=1.87, Re=1.46; Os=20.1, Ir=13.1, Pt=15.9, Au=0.695 (all ppm).

Classification: (M. Hutson and A. Ruzicka, Cascadia; C. Herd, UAlb): IIIAB iron, medium octahedrite. Ni may be low in part due to analytical uncertainty, but the composition is consistent with IIIAB for other reported elements and this meteorite may constitute a low Ni-high Ir member of IIIAB.

Specimens: Cascadia holds 491.6 g in three pieces; Mr. Jasper Spencer holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:FB Messenger
Date:P Dec 2021
Mass (g):9616
Class:Iron, IIIAB
Classifier:C. Herd, UAb; M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):498
Type spec location:Cascadia
Main mass:Mr. Jasper Spencer
Comments:Lab number CML 1507, possibly paired with NWA 13792.; submitted by Melinda Hutson
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Public domain photographs:
Melinda Hutson   

     This is 1 of 9806 approved meteorites from (Northwest Africa) (plus 1855 unapproved names)

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