Meteoritical Bulletin: Entry for Bechar 008

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Bechar 008

Basic information

Name: Bechar 008
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Algeria
Mass: 1700 g

Classification
history:

Meteoritical Bulletin:	MB 112	(2023)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 451 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 23 Feb 2023

Writeup

help

Writeup from MB 112:

Bechar 008 30.25293 N, 3.53005 W

Bechar, Algeria

Purchased: 2022 Jul

Classification: HED achondrite (Howardite)

History: Reportedly a group of meteorite hunters found several fragments of this material in Algeria, in an area called Alagla (near Abadla) in July 2022. Several months later Mohamed Ali Loud bought a total of 1700 g from a meteorite dealer in Mauritania.

Petrography (K. Metzler, IfP) Polymict achondritic breccia, consisting of mineral fragments and lithic clasts up to ~5 mm in size. These components are embedded in a fine-grained clastic matrix of related debris. Lithic clasts are dominated by eucritic gabbros and granulites, both of which show exsolved pyroxene. Mineral fragments include various eucritic pyroxenes (with and without augite exsolution lamellae), diogenitic pyroxene, feldspar, a silica polymorph, chromite, ilmenite, and Fe-Ni metal. About 10-20 vol% diogenitic components.

Geochemistry: Mineral compositions and geochemistry: Gabbro clast: Low-Ca pyroxene (host): Fs_60.6±0.5Wo_3.1±0.2(Fs_59.9-61.2Wo_2.8-3.3); mean Fe/Mn (at.): 30.3; n=6. Ca-rich pyroxene (exsolution lamellae) Fs_28.8±1.4Wo_40.9±1.5(Fs_27.4-30.5Wo_38.8-42.6); mean Fe/Mn (at.): 31.5; n=6. Plagioclase: An_86.8±1.8Or_0.3±0.3(An_85.4-89.4Or_0.0-0.8); n=6. Diogenitic pyroxene: Fs_22.5±0.5Wo_2.0±0.3(Fs_21.5-23.2Wo_1.5-2.4); mean Fe/Mn (at.): 32.6; n=7. Plagioclase fragments from clastic matrix: An_89.6±3.6Or_0.5±0.4(An_82.5-95.7Or_0.1-1.1); n=11.

Classification: Howardite, based on mineral chemistry, variety of eucritic lithologies, and occurrence of >10 vol% of diogenitic components.

Data from:
  MB112
  Table 0
  Line 0:

State/Prov/County:	Bechar
Place of purchase:	Mauritania
Date:	P 2022 Jul
Latitude:	30.25293 N
Longitude:	3.53005 W
Mass (g):	1700
Pieces:	Several
Class:	Howardite
Shock stage:	moderate
Weathering grade:	low
Ferrosilite (mol%):	60.6±0.5; 28.8±1.4; 22.5±0.5
Wollastonite (mol%):	3.1±0.2; 40.9±1.5; 2.0±0.3
Classifier:	K. Metzler, IfP
Type spec mass (g):	20
Type spec location:	IfP
Main mass:	Mohamed Ali Loud
Comments:	Submitted by K. Metzler, IfP

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)

Catalogs:

References:

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

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Antonello Petriccione

Geography:

Algeria

Algeria

Coordinates:
Recommended::	(30° 15' 11"N, 3° 31' 48"W)

Statistics:
This is 1 of 35 approved meteorites from Bechar, Algeria (plus 1 unapproved name)
This is 1 of 1356 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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Revision
history:

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