Meteoritical Bulletin: Entry for Aridal 010

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Aridal 010

Basic information

Name: Aridal 010
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2013
Country: Western Sahara
Mass: 333 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Brachinite
Recommended:			Brachinite [explanation]

This is 1 of 59 approved meteorites classified as Brachinite. [show all]
Search for other: Brachinites, Primitive achondrites

Comments:

Approved 1 Apr 2015

Writeup

help

Writeup from MB 104:

Aridal 010 25°46.6’N, 14°06.84’W

Western Sahara

Find: 2013 Apr 24

Classification: Primitive achondrite (Brachinite)

History: Found by Svend Buhl and Tomas Fuellengraben on April 24, 2013

Physical characteristics: A single brownish, oxidized stone.

Petrography: Optical microscope examination of a polished section reveals an equilibrated texture with triple junctions. Main mineral is olivine (grain size 400 μm). Accessory plagioclase (grain size 500 μm) and pyroxene (grain size 150-400 μm). Presence of Ca-phosphate and chromite.

Geochemistry: Olivine Fa=28.6±0.7 (n=14), FeO/MnO=50.0±1.8; Augite Fs=10.6±0.2 (n=3) Wo=43.7±0.2 (n=3), FeO/MnO=28.0±2.1, Al₂O₃=0.6 wt%; Plagioclase Ab_82.2Or1.4 An_16.34.Oxygen isotopic composition (J. Gattacceca, C. Sonzogni, CEREGE) δ¹⁷O=3.10 per mil, δ¹⁸O=6.17 per mil, Δ¹⁷O=-0.11 per mil (analysis of 1.5 mg of hand-picked olivine grains after acid washing of a 200 mg powdered sample, TFL slope=0.52).

Classification: Based on petrography, geochemistry and oxygen isotopic composition this is a primitive achondrite (brachinite).

Specimens: 26 g at FSAC, 14 g at CEREGE. Main mass with Svend Buhl.

Data from:
  MB104
  Table 0
  Line 0:

Origin or pseudonym:	granular sandy soil
Date:	2013 Apr 24
Latitude:	25°46.6'N
Longitude:	14°06.84'W
Mass (g):	333.4
Pieces:	1
Class:	Brachinite
Weathering grade:	high
Fayalite (mol%):	28.1±0.7 (n=14)
Ferrosilite (mol%):	10.6±0.2 (n=3)
Wollastonite (mol%):	43.7±0.2 (n=3)
Magnetic suscept.:	4.62
Classifier:	M. Aboulahris, J. Gattacceca, CEREGE
Type spec mass (g):	26
Type spec location:	FSAC
Main mass:	Svend Buhl
Finder:	Svend Buhl, Thomas Fuellengraben
Comments:	Submitted by J. Gattacceca

Plots:

O isotopes:

Institutions
and collections

CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)
FSAC: Universite Hassan II Casablanca, Faculte des Sciences Ain Chock, Departement de Géologie, BP 5366 Maârif, Casablanca, Morocco (institutional address; updated 9 Jan 2013)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Svend Buhl
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Dirk Hohmann

Geography:

Western Sahara

Western Sahara

Coordinates:
Recommended::	(25° 46' 36"N, 14° 6' 50"W)

Statistics:
This is 1 of 280 approved meteorites from Western Sahara (plus 20 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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