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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
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 2051 approved meteorites (plus 4 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
Writeuphelp
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:
  MB112
  Table 0
  Line 0:
Place of purchase:FB Messenger
Date:P Apr 2022
Mass (g):1033
Pieces:2
Class:L4
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
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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