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Northwest Africa 16332
Basic information Name: Northwest Africa 16332
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16332
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 10 g
Meteoritical Bulletin:  MB 112  (2024)  H6
Recommended:  H6    [explanation]

This is 1 of 6996 approved meteorites (plus 6 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 3 Jan 2024
Writeup from MB 112:

Northwest Africa 16332 (NWA 16332)

(Northwest Africa)

Purchased: Aug 2020

Classification: Ordinary chondrite (H6)

History: Mr. Jasper Spencer purchased a single 10 g stone from a Mauritanian dealer in August 2020 via FB Messenger, and donated two small pieces to Cascadia for classification.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): The thin section is stained yellow-brown, and is crosscut by numerous weathering veins, with variable replacement of metal and sulfide, averaging about 70% across the section. The sample is coarse-grained, with only six barely discernable chondrules visible with an optical microscope. Plagioclase feldspar is coarse, with many grains > 50 µm across.

Geochemistry: Olivine (Fa20.4±0.2, N=16); low-Ca pyroxene (Fs17.9±0.1Wo: 1.40.1, N=11); plagioclase feldspar (Ab81.4±0.4Or5.8±0.4An12.8±0.1, N=8).

Classification: Ordinary chondrite (H6) based on mineral chemistry and texture.

Specimens: Cascadia holds 1.8 g in two pieces, as well as a polished thin section and material in an epoxy butt; Mr. Jasper Spencer holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:FB Messenger
Date:P Aug 2020
Mass (g):10
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):20.4±0.2 (N=16)
Ferrosilite (mol%):17.9±0.1 (N=11)
Wollastonite (mol%):1.40.1 (N=11)
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):2.5
Type spec location:Cascadia
Main mass:Mr. Jasper Spencer
Comments:Lab number CML 1440; 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)
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 9829 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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