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Aridal 012
Basic information Name: Aridal 012
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2012
Country: Western Sahara
Mass:help 1953 g
Meteoritical Bulletin:  MB 104  (2015)  H4
Recommended:  H4    [explanation]

This is 1 of 6459 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 9 Nov 2015
Writeup from MB 104:

Aridal 012        25°38.332’N, 13°49.553’W

Rio de Oro, Western Sahara

Find: 2012 Feb 16

Classification: Ordinary chondrite (H4)

History: Discovered by T. Füllengraben and R. Bartoschewitz during natural history expedition close to the astronomical point of Ammat el Quebch in the Boujdour area on 2012 Feb 16.

Physical characteristics: One brown stone and many small fragments totaling 1953 g; saw-cut shows chondrules set in fine-grained brown groundmass. Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.89.

Petrography: Microprobe examination of a polished thin section shows well developed chondrules (porphyritic, radial) up to 1.2 mm (av. 0.7 mm), chondrule and mineral fragments in recrystallized, brecciated groundmass with highly oxidized metal.

Geochemistry: (R. Bartoschewitz, P. Appel and B. Mader, Kiel) Olivine: Fa18.8-20.1; av. Fa19.3±0.31 (n=21); pyroxene Fs16.5-17.2Wo1.2-1.5; av. Fs16.8±0.28Wo1.4±0.11 (n=7); kamacite Ni = 6.8-7.0, Co = 0.6 wt.%.

Classification: Ordinary Chondrite (H4) of shock stage S3 and weathering grade W3.

Specimens: 26.9 g on deposit at FSAC

Data from:
  Table 0
  Line 0:
State/Prov/County:Rio de Oro
Date:2012 Feb 16
Mass (g):1953
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):19.3±0.31 (n=21)
Ferrosilite (mol%):16.8±0.28 (n=7)
Wollastonite (mol%):1.4±0.11
Magnetic suscept.:4.89
Classifier:R. Bartoschewitz; H. Chennaoui Aoudjehane, FSAC
Type spec mass (g):26.9
Type spec location:FSAC
Main mass:Th. Füllengraben
Finder:Th. Füllengraben, R. Bartoschewitz
Comments:Working name Ra01.; submitted by H. Chennaoui Aoudjehane
   and collections
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
FSAC: Universite Hassan II Casablanca, Faculte des Sciences Ain Chock, Departement de Géologie, BP 5366 Maârif, Casablanca, Morocco (institutional address; updated 9 Jan 2013)
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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Western Sahara
     Recommended::   (25° 38' 20"N, 13° 49' 33"W)

     This is 1 of 50 approved meteorites from Rio de Oro, Western Sahara
     This is 1 of 272 approved meteorites from Western Sahara (plus 20 unapproved names)
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