Meteoritical Bulletin: Entry for Amtoudi

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Amtoudi

Basic information

Name: Amtoudi
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2020
Country: Morocco
Mass: 550 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	LL3.15
Recommended:			LL3.15 [explanation]

This is 1 of 23 approved meteorites classified as LL3.15. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 1 Oct 2022

Writeup

Writeup from MB 111:

Amtoudi 29°13’58"N, 9°08’46"W

South, Morocco

Find: 2020

Classification: Ordinary chondrite (LL3.15)

Petrography: (J. Gattacceca, CEREGE) Weathered chondrite with well-delineated packed chondrules with apparent diameter 720±350 μm (n=20). The rare remaining original opaque minerals are metal and troilite. Chondrule mesostasis is devitrified. Olivine is zoned.

Geochemistry: Olivine Fa_14.7±8.4, range Fa_0.5-30.3, Fa PMD 97% (n=40). Low-Ca pyroxene Fs_11.4±8.5Wo_1.0±0.6, range Fs_1.9-22.0.Cr₂O₃ in ferroan olivine 0.20±0.12 (n=34).

Classification: Ordinary chondrite (LL3.15). LL group based on chondrule size and magnetic susceptibility. Subtype based on the Cr₂O₃ content of ferroan olivine that is similar to Yamato 791558 (Grossman and Brearley, 2005).

Specimens: Type specimen at CEREGE. Main mass with Jérémy Bassemon

Bibliography:

Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)

Data from:
  MB111
  Table 0
  Line 0:

State/Prov/County:	South
Date:	2020
Latitude:	29°13'58"N
Longitude:	9°08'46"W
Mass (g):	550
Pieces:	1
Class:	LL3.15
Weathering grade:	W4
Fayalite (mol%):	14.7±8.4 (n=40)
Ferrosilite (mol%):	11.4±8.2 (n=12)
Wollastonite (mol%):	1.0±0.6
Magnetic suscept.:	3.12
Classifier:	J. Gattacceca, C. Maurel, CEREGE
Type spec mass (g):	21
Type spec location:	CEREGE
Main mass:	Jérémy Bassemon
Finder:	anonymous
Comments:	work name JB27; submitted by Jérôme Gattacceca

Institutions
and collections

CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?

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Geography:

Morocco

Coordinates:
Recommended::	(29° 13' 58"N, 9° 8' 46"W)

Statistics:
This is 1 of 43 approved meteorites from South, Morocco
This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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