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Northwest Africa 16370
Basic information Name: Northwest Africa 16370
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16370
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 9.85 kg
Meteoritical Bulletin:  MB 112  (2024)  H4
Recommended:  H4    [explanation]

This is 1 of 6548 approved meteorites (plus 2 unapproved names) classified as H4.   [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 16370 (NWA 16370)

(Northwest Africa)

Purchased: 2021

Classification: Ordinary chondrite (H4)

History: A single 9850 g stone was purchased by Mark Lyon in late 2021 from a meteorite dealer in Morrocco. Mark subsequently sold the stone to John Humphries in late December 2021, who had cut it into many pieces. Paul Swartz subsequently purchased 2250 grams of these pieces.

Physical characteristics: Many pieces with minor fusion crust.

Petrography: (D. Sheikh, Cascadia) Equilibrated ordinary chondrite containing accessory Fe-Ni metal and troilite.

Geochemistry: Olivine (Fa19.3±0.2, range Fa19.0-19.9, n=37); Low-Ca Pyroxene (Fs16.9±0.2Wo1.3±0.8, range Fs16.6-17.3Wo0.7-4.1, n=23).

Classification: Ordinary chondrite (H4).

Specimens: 26 g type specimen at Cascadia, 2250 g with Paul Swartz, main mass with John Humphries.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):9850
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.3±0.2
Ferrosilite (mol%):16.9±0.2
Wollastonite (mol%):1.3±0.8
Classifier:D. Sheikh, Cascadia
Type spec mass (g):26
Type spec location:Cascadia
Main mass:John Humphries
Comments:CML 1613; submitted by Daniel Sheikh
   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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