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Boudenib 001
Basic information Name: Boudenib 001
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Morocco
Mass:help 185 g
Classification
  history:
Recommended:  Diogenite-melt breccia    [explanation]

This is 1 of 6 approved meteorites classified as Diogenite-melt breccia.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 1 Oct 2022
Writeuphelp
Writeup from MB 111:

Boudenib 001        31°50.583’N, 3°43.633’W

Centre-South, Morocco

Find: 2021

Classification: HED achondrite (Diogenite, melt breccia)

History: Many stones were found and collected in the desert region close to Boudenib in 2021 by nomads. This material was later purchased by Nbark Boisofa.

Physical characteristics: Multiple stones and fragments that are weathered; some of them are partly covered by a dark brown fusion crust.

Petrography: (D. Sheikh, Cascadia) This sample is made up of two distinct lithologies; Lithology 1 (host) comprises ~85 vol. % of the analyzed thin section and represents a diogenite melt breccia composed of zoned, tabular low-Ca pyroxene grains (up to ~ 1 mm) set within a melt-textured matrix speckled with Fe-sulfides (primarily pentlandite) and containing accessory calcic plagioclase, olivine, kamacite, chromite, and merrillite. Lithology 2 comprises ~15 vol. % of the analyzed thin section (in the form of a few scattered clasts) and represents a mixed breccia composed of zoned, diogenitic tabular low-Ca pyroxene grains (up to ~1 mm, ~40 vol. %), reversely-zoned, eucritic tabular pigeonite grains (some displaying augite exsolution lamellae, up to ~1 mm, ~25 vol. %), and accessory chromite, merrillite, ilmenite, pentlandite, troilite, kamacite, olivine, and SiO2-rich glass, all of which is sub-ophitically enclosed within a matrix of skeletal and lath-shaped calcic plagioclase (~90 μm, ~35 vol. %). The sample is crosscut by multiple weathering veins containing Fe-hydroxides.

Geochemistry: Lithology 1: Diogenite Low-Ca Pyroxene (Fs25.0±2.5Wo1.7±0.4, range Fs22.5-32.4Wo1.1-3.4, Fe/Mn=30±2, n=47), Olivine (Fa33.9±1.6, range Fa32.6-36.8, Fe/Mn=48±3, n=5), Calcic Plagioclase (An87.4±0.8, range An86.6-88.9, n=8); Lithology 2: Diogenite Low-Ca Pyroxene (Fs26.9±4.5Wo2.6±1.4, range Fs19.1-34.8Wo0.9-5.2, Fe/Mn=28±2, n=16), Eucrite Pigeonite (Fs35.8±3.8Wo10.0±4.8, range Fs28.7-41.7Wo5.5-24.2, Fe/Mn=24±2, n=19), Eucrite High-Ca Pyroxene (Fs28.9±9.3Wo31.7±8.9, range Fs22.3-35.5Wo25.4-38.0, Fe/Mn=23±2, n=2), Olivine (Fa48.9±0.2, range Fa48.8-49.1, Fe/Mn=46±1, n=2), Calcic Plagioclase (An87.9±0.6, range An87.3-89.9, n=16).

Classification: HED achondrite (Diogenite-melt breccia) due to the fact that the entirety of the host lithology (Lithology 1, occupies ~85 vol. % of section) and ~40% of Lithology 2 (occupies ~15 vol. % of section) is texturally/compositionally representative of a diogenite-melt breccia.

Specimens: 20.06 g at Cascadia, main mass with Nbark Boisofa.

Data from:
  MB111
  Table 0
  Line 0:
State/Prov/County:Centre-South
Origin or pseudonym:Desert region nearby to Boudenib.
Date:2021
Latitude:31°50.583'N
Longitude:3°43.633'W
Mass (g):185
Pieces:many
Class:Diogenite-melt breccia
Shock stage:moderate
Weathering grade:high
Fayalite (mol%):33.9±1.6; 48.9±0.2
Ferrosilite (mol%):25.0±2.5; 26.9±4.5, 35.8±3.8, 28.9±9.3
Wollastonite (mol%):1.7±0.4; 2.6±1.4, 10.0±4.8, 31.7±8.9
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.06
Type spec location:Cascadia
Main mass:Nbark Boisofa
Comments:CML 1520; 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 Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh      
Geography:

Morocco
Coordinates:
     Recommended::   (31° 50' 35"N, 3° 43' 38"W)

Statistics:
     This is 1 of 22 approved meteorites from Centre-South, Morocco (plus 1 impact crater)
     This is 1 of 1904 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)
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