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Bechar 009
Basic information Name: Bechar 009
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 897 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2024)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 341 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 23 Feb 2023
Writeuphelp
Writeup from MB 112:

Bechar 009        30°53.8917’N, 3°23.1783’W

Bechar, Algeria

Find: Dec 2021

Classification: Lunar meteorite (feldspathic breccia)

History: Found December 2021 in Algeria near Mechraa Houari Bou; subsequently purchased in February 2022 by Craig Zlimen.

Physical characteristics: Single stone with slightly weathered exterior and absent fusion crust.

Petrography: (D. Sheikh, Cascadia) Specimen is a polymict breccia comprised of mm to cm-sized lithic clasts and mm-sized mineral clasts set within a mostly fine-grained matrix containing accessory ilmenite, titanomagnetite, troilite, and SiO2-rich glass. Certain areas in the matrix contain melt pockets, melt veins, recrystallized melt, and vesicles. Clast lithologies identified include anorthosites, impact melt clasts, norites and noritic anorthosites; unusual clast lithologies are also observed, including a silica-bearing ferroan wehrlite and an alkali feldspar granite (~35 vol. % silica, ~55 vol. % potassium feldspar, ~6 vol. % plagioclase feldspar, Av. grain size ~0.1 mm in longest dimension, contains regions displaying graphic textures). Plagioclase feldspar has been transformed into maskelynite in some regions of the sample.

Geochemistry: Olivine (Fa50.4±31.9, range Fa12.8-86.7, Fe/Mn=89±14, n=25), Low-Ca Pyroxene (Fs23.4±4.0Wo2.6±0.7, range Fs20.6-26.2Wo2.6-0.7, Fe/Mn=55±5, n=2), Pigeonite (Fs42.8±23.5Wo8.6±2.7, range Fs25.8-69.6Wo6.6-11.7, Fe/Mn=64±4, n=3), High-Ca Pyroxene (Fs30.3±15.1Wo38.1±4.8, range Fs5.8-43.3Wo26.6-44.2, Fe/Mn=62±14, n=21), Calcic Plagioclase (An94.1±2.3Or0.3±0.3, range An90.5-97.7Or0.1-1.4, n=23). Alkali feldspar granite clast [Plagioclase (An42.3±1.1Or1.5±0.1, range An41.5-43.0Or1.5-1.6, n=2), Potassium Feldspar (An8.1±2.2Or64.5±5.3, range An5.7-10.0Or60.0-70.3, n=3)].

Classification: Lunar (feldspathic breccia).

Specimens: 22.3 g at Cascadia, 174 g with Jason Phillips, main mass with Craig Zlimen.

Data from:
  MB112
  Table 0
  Line 0:
State/Prov/County:Bechar
Origin or pseudonym:Desert
Date:Dec 2021
Latitude:30°53.8917'N
Longitude:3°23.1783'W
Mass (g):897
Pieces:1
Class:Lunar (feldsp. breccia)
Shock stage:high
Weathering grade:low
Fayalite (mol%):50.4±31.9
Ferrosilite (mol%):23.4±4.0, 42.8±23.5, 30.3±15.1
Wollastonite (mol%):2.6±0.7, 8.6±2.7, 38.1±4.8
Classifier:D. Sheikh, Cascadia
Type spec mass (g):22.3
Type spec location:Cascadia
Main mass:Craig Zlimen
Comments:CML 1612; submitted by Daniel Sheikh
Institutions
   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)
Catalogs:
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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Geography:

Algeria
Coordinates:
     Recommended::   (30° 53' 54"N, 3° 23' 11"W)

Statistics:
     This is 1 of 37 approved meteorites from Bechar, Algeria (plus 1 unapproved name)
     This is 1 of 1374 approved meteorites from Algeria (plus 31 unapproved names) (plus 4 impact craters)
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