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| Abadla 002 | |||||||||||||||||||||||||||||||||||
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| Basic information | Name: Abadla 002 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2022 Country: Algeria Mass:  800 g | ||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 636 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||||||||||||
| Comments: | Approved 13 May 2022 | ||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 111:
Abadla 002 30°28’58.07"N, 01°37’15.76"W Bechar, Algeria Find: 2021 Classification: Carbonaceous chondrite (CM2) History: Many identically appearing pieces were found on December 5, 8 and 13, 2021, along an approximately 10 km traverse. Purchased from Mouha Bouyat on February 22, 2022. Physical characteristics: Dark fusion-crusted exterior, broken surface reveals numerous small chondrules set in a dark gray matrix that makes up over 50% of this meteorite. Small CAIs are visible. Petrography: (A. Ross and C. Agee, UNM) Chondrules and Small CAIs set in a fine-grained matrix (>50 vol%) . Most chondrules are porphyritic type I with predominantly forsteritic olivines. Matrix olivines are mostly fragmental and ferroan. Apparent mean chondrule diameter approximately 300 μm. Aluminous diopside, troilite, Fe-Ni sulfide, and low-Ni iron were detected. Geochemistry: (A. Ross and C. Agee, UNM) Type I chondrule olivine Fa0.9±0.3, Cr2O3=0.37±0.20 (wt%) n=4; ferroan matrix olivine Fa38.3±6.9, Fe/Mn=97±22, Cr2O3=0.29±0.14 (wt%) n=4; low-Ca pyroxene Fs3.0±2.3Wo2.4±2.1, n=4; matrix (20 ?m defocused microprobe beam) analytical totals of 77.6±2.4 wt% and FeO=35.5±3.4 wt%, n=7. Classification: Carbonaceous chondrite (CM2). The low analytical totals in the matrix indicate the presence of hydrous phases. Specimens: 20 g on deposit at UNM, Mouha Bouyat and Matthew Stream hold the main mass. | ||||||||||||||||||||||||||||||||||
| Data from: MB111 Table 0 Line 0: |
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| Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
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| Catalogs: |
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| 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:
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Statistics: This is 1 of 35 approved meteorites from Bechar, Algeria (plus 1 unapproved name) This is 1 of 1358 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||||||||||
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| Also see: |
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| Revision history: |
This lists important revisions made to data for this record.
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