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| Birkat Aghurmi 001 | |||||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Birkat Aghurmi 001 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2012 Country: Egypt Mass:  1666 g | ||||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 12281 approved meteorites (plus 8 unapproved names) classified as L6. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||||||||||
| Comments: | Approved 3 Nov 2017 | ||||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 106:
Birkat Aghurmi 001 29°13’N, 25°31’E Marsa Matruh, Egypt Find: 2 Jan 2012 Classification: Ordinary chondrite (L6) History: Found by Faisal Mohammed Ghadeer in January 2012 near the Siwa oasis one day after he had seen a fireball. He brought the stone back home to Nuweiba/Sinai where it was later acquired by Rolf Müller. Based on the weathering and wind-ablation, this cannot be a fresh fall. Physical characteristics: Rounded individual, approx. 12 × 12 × 3.5 cm, strongly wind-ablated, fusion crust only partially preserved. Petrography: (B. Hofmann, NMBE): Homogeneous chondritic texture with weakly delineated chondrules. Typical size of plagioclase grains is 40-60 μm. Metallic iron is partly weathered (~50%), troilite is only locally altered. Geochemistry: (N. Greber, Bern and B. Hofmann, NMBE) Olivine compositions are Fa23.6±0.4 (N=32), pyroxene compositions (n=19) are Fs20.0±0.3Wo1.5±0.4. Classification: Ordinary chondrite (L6), shock stage S2, low weathering (W2). Possibly paired with Siwa. Specimens: 24.0 g plus one polished thin section at NMBE, main mass: Rolf Müller, Zurich, Switzerland. | ||||||||||||||||||||||||||||||||||||||||
| Data from: MB106 Table 0 Line 0: |
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| Institutions and collections |
NMBE: Natural History Museum Bern
Bernastrasse 15
CH-3005 Bern
Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012) Bern: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address) |
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| References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:
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Statistics: This is 1 of 13 approved meteorites from Marsa Matruh, Egypt This is 1 of 127 approved meteorites from Egypt (plus 12 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||||||||
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