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Aydar 004
Basic information Name: Aydar 004
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 165.6 g
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 179 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Aydar 004        27.880°N, 10.418°W

South, Morocco

Find: 2019

Classification: HED achondrite (Eucrite, brecciated)

History: Found in 2019 in Reg Labyad, southern Morocco, by a nomad. Purchased in Zagora, Morocco, in August 2019 from a dealer by Juan Avilés Poblador on behalf of the Earth Sciences Department at the University of Alicante, Spain.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Complex breccia containing a variety of lithic eucrite clasts (with fine-intersertal, diabasic, porphyritic and vitrophyric textures) together with ~5 vol.% dark melt-matrix breccia clasts set in a finer grained matrix of related crystal debris. The melt-matrix breccia clasts contain angular grains of pyroxene and plagioclase in a quench-textured matrix. Pyroxene in all of the components is similarly pale brown in thin section. Minerals are compositionally-zoned low-Ca pyroxene (some exhibiting extremely fine exsolution features), calcic plagioclase, ferroan orthopyroxene, augite, ferroan pigeonite, subcalcic augite, silica polymorph, ilmenite intergrown with chromite, troilite, chlorapatite and minor kamacite. No diogenitic orthopyroxene was observed.

Geochemistry: Pigeonite cores (Fs29.8-34.9Wo6.1-7.2, FeO/MnO = 27-29, N = 3), ferroan low-Ca pyroxene rims (Fs55.6-59.3Wo3.8-4.3, FeO/MnO = 32, N = 3), orthopyroxene (Fs63.2-63.8Wo2.3-2.4, FeO/MnO = 32-33, N = 2), augite (Fs28.0Wo42.8, FeO/MnO = 34), ferroan pigeonite (Fs54.3Wo13.6, FeO/MnO = 33), subcalcic augite (Fs44.5Wo25.5, FeO/MnO = 31), plagioclase (An87.6-92.2Or0.5-0.3, N = 3).

Classification: Eucrite (breccia).

Specimens: 22.9 g including one polished thin section at UWB; remainder in the collection of UAlic.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:South
Place of purchase:Zagora
Date:2019
Latitude:27.880°N
Longitude:10.418°W
Mass (g):165.6
Pieces:1
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):63.2-63.8; 29.8-34.9; 55.6-59.3
Wollastonite (mol%):2.3-2.4; 6.1-7.2; 3.8-4.3
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):22.9
Type spec location:UWB
Main mass:University of Alicante
Comments:Work name JAP19-1; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
UAlic: Earth Sciences Department University of Alicante San Vicente del Raspeig, Spain (institutional address; updated 9 Feb 2020)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography:

Morocco
Coordinates:
     Recommended::   (27° 52' 48"N, 10° 25' 5"W)

Statistics:
     This is 1 of 10 approved meteorites from South, Morocco
     This is 1 of 1505 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)
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