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Northwest Africa 15984
Basic information Name: Northwest Africa 15984
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15984
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 12.3 kg
Classification
  history:
Meteoritical Bulletin:  MB 112  (2024)  L5
Recommended:  L5    [explanation]

This is 1 of 8948 approved meteorites (plus 5 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 10 Jun 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15984 (NWA 15984)

(Northwest Africa)

Purchased: December 2021

Classification: Ordinary chondrite (L5)

History: Purchased by Jason Whitcomb in December 2021 from a meteorite dealer in Morocco.

Physical characteristics: Single stone with slightly weathered dark brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample is an equilibrated ordinary chondrite containing secondary recrystallized feldspar (Av. ~16 μm) and accessory Fe-Ni metal, troilite, and chromite.

Geochemistry: Olivine (Fa26.0±0.3, range Fa25.4-26.9, n=31), Low-Ca Pyroxene (Fs21.6±0.7Wo1.2±0.9, range Fs20.3-24.1Wo0.5-3.7, n=35).

Classification: Ordinary chondrite (L5).

Specimens: 45.3 g at Cascadia, main mass with Jason Whitcomb.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P December 2021
Mass (g):12300
Pieces:1
Class:L5
Shock stage:S4
Weathering grade:W3
Fayalite (mol%):26.0±0.3
Ferrosilite (mol%):21.6±0.7
Wollastonite (mol%):1.2±0.9
Classifier:D. Sheikh, Cascadia
Type spec mass (g):45.3
Type spec location:Cascadia
Main mass:Whitcomb Meteorite Collection
Comments:CML 1567; JW-138; submitted by Daniel Sheikh
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)
Catalogs:
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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9790 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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