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| Bechar 009 | |||||||||||||||||||||||||||||||||||||
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| 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:  897 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 312 approved meteorites classified as Lunar (feldsp. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||||||||
| Comments: | Approved 23 Feb 2023 | ||||||||||||||||||||||||||||||||||||
| Writeup |
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: |
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| 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) |
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| References: | Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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Geography:
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Statistics: This is 1 of 31 approved meteorites from Bechar, Algeria (plus 1 unapproved name) This is 1 of 1273 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||||||||||||
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