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| Hassi Messaoud 001 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Hassi Messaoud 001 This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 2020 Country: Algeria Mass:  75 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 32 approved meteorites classified as Martian (nakhlite). [show all] Search for other: Martian meteorites | ||||||||||||||||||||||||||||||||||||
| Comments: |
Approved 21 Feb 2021 Revised 4 Apr 2021: Fixed misspelled name | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Hassi Messaoud 001 31°51.11’N, 6°58.59’E Ouargla, Algeria Find: 2020 Mar 11 Classification: Martian meteorite (Nakhlite) History: Found on March 11, 2020, near the town of El Borma. Later acquired in 2021 by Matthew Stream from Aziz Zad. Physical characteristics: Specimen is grayish-brown and displays a slightly weathered, minor fusion crust. Petrography: (D. Sheikh, FSU) Specimen displays a cumulate texture (~1.1 mm grainsize) consisting primarily of compositionally zoned, prismatic or blocky (sometimes twinned) augite (displaying Fs-rich rims), ferroan olivine, and plagioclase; modal abundances: 75% augite, 15% plagioclase, 5% olivine. Accessory phases (modal abundance: 5%) are primarily found either in the mesostasis or within melt inclusions in augite or olivine grains; these phases include ferropigeonite, low-ca pyroxene, titanomagnetite, Si-Al-Na-Fe-K-rich glass, and fluorapatite. Geochemistry: Olivine (Fa73.3±1.0, range Fa72.6-74.5, Fe/Mn = 50±1, n=3), Augite (Fs30.1±4.7Wo38.4±1.4, range Fs22.8-37.9Wo34.9-40.3, Fe/Mn = 32±4, n=47), Pigeonite (Fs58.6±4.9 Wo9.9±3.8, range Fs53.3-62.9 Wo6.6-14.0, Fe/Mn = 31±2, n=5), Low-Ca Pyroxene (Fs64.5±4.1Wo3.1±0.9, range Fs61.1-70.2Wo3.0-5.3, Fe/Mn = 35±2, n=8), Plagioclase (An37.2±1.3Or2.9±0.5, range An35.3-39.4Or2.0-4.0, n=27). Classification: Martian (nakhlite). Sample is a martian meteorite due to the Fe/Mn ratios of olivine and pyroxene, and due to the plagioclase composition. Sample is a nakhlite due to the high modal abundance of augite and cumulate texture observed. Specimens: 15.2 g at UCLA, main mass with Matthew Stream. | ||||||||||||||||||||||||||||||||||||
| Data from: MB110 Table 0 Line 0: |
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| Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010) |
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| Catalogs: |
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| References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:
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Statistics: This is 1 of 43 approved meteorites from Ouargla, Algeria (plus 1 unapproved name) This is 1 of 1277 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||||||||||||
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| Synonyms: |
Hassi Messauod (Original misspelled name) | ||||||||||||||||||||||||||||||||||||