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Northwest Africa 16043
Basic information Name: Northwest Africa 16043
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16043
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 1033 g
Meteoritical Bulletin:  MB 112  (2024)  L4
Recommended:  L4    [explanation]

This is 1 of 2073 approved meteorites (plus 5 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 15 Jul 2023
Writeup from MB 112:

Northwest Africa 16043 (NWA 16043)

(Northwest Africa)

Purchased: Apr 2022

Classification: Ordinary chondrite (L4)

History: Mr. Jasper Spencer purchased one stone broken into two pieces from a Mauritanian dealer in April 2022 via FB Messenger. The dealer stated that it was found in Mauritania in 2020. Cascadia received a 48 g end cut.

Physical characteristics: Physical Characteristics: Much of the exterior surface of the end cut is a slightly weathered dark gray fracture surface. Remnant black fusion crust is preserved along one face of the exterior. Chondrules, fragments, and metal/sulfide is visible set in a medium to light gray matrix on the cut face.

Petrography: (Vince Mugica, CSUF; Daniel Sheikh, Cascadia): Sample is an ordinary chondrite comprised of closely packed microporphyritic olivine, barred olivine, cryptocrystalline, and radial pyroxene chondrules. Other phases include olivine, pyroxene, poikilitic orthopyroxene with olivine chadacrysts, Fe-Ni grains, sulfides, and Fe-oxides.

Geochemistry: Olivine (Fa23.7±0.35, N=48), Pyroxene (Fs18.6±4.47Wo1.2±1.5, N=75)

Classification: Ordinary Chondrite (L4)

Specimens: Cascadia holds 42.1 g in one piece, as well as two polished thin sections and material in an epoxy stub. Mr. Jasper Spencer holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:FB Messenger
Date:P Apr 2022
Mass (g):1033
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):23.7±0.35 (N=48)
Ferrosilite (mol%):18.6±4.47 (N=75)
Wollastonite (mol%):1.2±1.5 (N=75)
Classifier:V. Mugica, CSUF; D. Sheikh, G. Anim, M. Hutson, and A. Ruzicka, Cascadia
Type spec mass (g):48
Type spec location:Cascadia
Main mass:Mr. Jasper Spencer
Comments:Lab number CML 1513; 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)
CSUF: California State University, Fullerton 800 N. State College Blvd. Fullerton, CA 92831-3599, United States (institutional address; updated 15 Jul 2023)
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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     This is 1 of 9790 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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