Meteoritical Bulletin: Entry for Northwest Africa 15729

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Northwest Africa 15729

Basic information

Name: Northwest Africa 15729
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15729
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 957 g

Classification
history:

Recommended:

LL3 [explanation]

This is 1 of 446 approved meteorites classified as LL3. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 23 Feb 2023

Writeup

Writeup from MB 112:

Northwest Africa 15729 (NWA 15729)

(Northwest Africa)

Purchased: Jun 2022

Classification: Ordinary chondrite (LL3)

History: Reportedly found by nomads in Mauritania und subsequently purchased by Mr. Jasper Spencer from a Mauritanian dealer via Facebook Messenger.

Physical characteristics: Many brownish stones lacking fusion crust.

Petrography: The meteorite shows a chondritic texture with well-defined, mostly flattened and packed chondrules (mean diameter about 0.9 mm) in a fine-grained light brownish matrix that contains partly altered sulfides and rare FeNi metal.

Geochemistry: Cr₂O₃ in ferroan olivine 0.05±0.06 wt%, n=30.

Classification: Ordinary chondrite (LL3).

Data from:
  MB112
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P Jun 2022
Mass (g):	957
Pieces:	many
Class:	LL3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	16.4±9.3 (1.4-35.9, n=28)
Ferrosilite (mol%):	10.9±7.2 (1.7-19.4, n=29)
Wollastonite (mol%):	1.1±1.0 (0.2-3.8, n=29)
Magnetic suscept.:	3.92
Classifier:	A. Greshake, MNB
Type spec mass (g):	38.8
Type spec location:	MNB
Main mass:	Jasper Spencer
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 112, in preparation (2023)

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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