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Touat 009
Basic information Name: Touat 009
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2023
Country: Algeria
Mass:help 513 g
Classification
  history:
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 90 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 Sep 2023
Writeuphelp
Writeup from MB 112:

Touat 009        27°16’01.87"N, 0°38’40.30"W

Adrar, Algeria

Find: 2023 Mar 16

Classification: HED achondrite (Eucrite, melt breccia)

History: The meteorite was found during a field trip in the Touat dense colection area.

Physical characteristics: Dark grayish rock lacking fusion crust.

Petrography: Eucrite-melt breccia composed of up to 2 mm sized angular to subrounded bulk rock clasts set in abundant finely crystallized shock melt. Clasts predominantly consist of up to 500 µm sized exsolved pyroxene and calcic plagioclase. Minor phases include silica, chromite, ilmenite, and FeS. No metallic iron detected.

Geochemistry: low-Ca pyroxene host to exsolution lamellae: Fs52.3±0.2Wo6.0±0.3 (Fs52.0-52.6Wo5.6-6.5, FeO/MnO=28-29, n=10); Ca-pyroxene exsolution lamellae: Fs26.6±0.9Wo40.9±1.4 (Fs25.5-28.7Wo37.4-42.4, FeO/MnO=26-32, n=10); calcic plagioclase: An91.6±1.6 (An89.4-93.9, n=10).

Data from:
  MB112
  Table 0
  Line 0:
State/Prov/County:Adrar
Date:2023 Mar 16
Latitude:27°16'01.87"N
Longitude:0°38'40.30"W
Mass (g):512.7
Pieces:1
Class:Eucrite-melt breccia
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):52.3; 26.6
Wollastonite (mol%):6.0; 40.9
Classifier:A. Greshake, MNB
Type spec mass (g):23
Type spec location:MNB
Main mass:J. Z. Sidi
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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Geography:

Algeria
Coordinates:
     Recommended::   (27° 16' 2"N, 0° 38' 40"W)

Statistics:
     This is 1 of 192 approved meteorites from Adrar, Algeria (plus 1 unapproved name)
     This is 1 of 1294 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)
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