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Qued Mya 003
Basic information Name: Qued Mya 003
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 540 g
Classification
  history:
Recommended:  C3-ung    [explanation]

This is 1 of 26 approved meteorites classified as C3-ung.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), and Ungrouped chondrites
Comments: Approved 5 Jul 2022
Writeuphelp
Writeup from MB 111:

Qued Mya 003        30.140°N, 4.093°E

Ouargla, Algeria

Purchased: 2021 Oct

Classification: Carbonaceous chondrite (C3, ungrouped)

History: Found in Algeria and purchased by Mohammed Hmani in October 2021 from a Mauritanian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL; L. Garvie, ASU) Very small, unequilibrated chondrules (apparent diameter 280±180 µm, N = 24) together with mineral fragments and sparse amoeboid, very fine-grained, rimmed CAI are set in a very fine-grained matrix (~50 vol.%, opaque in thin section). CAI have olivine-rich rims and contain aluminous diopside, gehlenite and spinel. Matrix phases confirmed by electron microprobe analysis include kamacite (partly altered to Fe oxides) and pentlandite. Powder X-ray diffraction analysis of a bulk sample confirmed the absence of serpentine, but did reveal some low angle scattering, which implies a significant amorphous component. Powder X-ray diffraction also confirmed the dominance of low Fa olivine accompanied by a small amount of a higher Fa component, as well as the presence of various pyroxenes, pyrrhotite, pentlandite, magnetite and possibly dolomite.

Geochemistry: Olivine (Fa28.1±24.2, range Fa0.9-66.2, N = 7), low-Ca pyroxene (Fs11.8±10.6Wo2.3±0.3, range Fs0.9-24.5Wo1.8-2.6, N = 4), Al-Ti-diopside (Fs1.0Wo47.6, Al2O3 11.3 wt.%, TiO2 1.4 wt.%). Oxygen isotopes (C. Sonzogni and J. Gattacceca, CEREGE): analysis of a 2 mg aliquot from a powdered bulk rock sample by laser fluorination gave δ17O -3.84, δ18O 1.31, Δ17O -4.52 (for a TFL slope of 0.52), all per mil.

Classification: Carbonaceous chondrite (C3-ung). Potentially paired with NWA 14139, NWA 14179, NWA 14740 and other recently recovered ungrouped C3 chondrite specimens based on similarities in texture, mineralogy and especially oxygen isotopic composition.

Specimens: 20.5 g including one polished thin section at UWB; remainder with Mr. M. Hmani.

Data from:
  MB111
  Table 0
  Line 0:
State/Prov/County:Ouargla
Place of purchase:Mauritania
Date:P 2021 Oct
Latitude:30.140°N
Longitude:4.093°E
Mass (g):540
Pieces:many
Class:C3-ung
Shock stage:S1
Weathering grade:low
Fayalite (mol%):28.1±24.2
Ferrosilite (mol%):11.8±10.6
Wollastonite (mol%):2.3±0.3
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.5
Type spec location:UWB
Main mass:M. Hmani
Comments:Work name MH-Q15; submitted by A. Irving
Plots: O isotopes:  
Institutions
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
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)
Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Geography:

Algeria
Coordinates:
     Recommended::   (30° 8' 24"N, 4° 5' 35"E)

Statistics:
     This is 1 of 41 approved meteorites from Ouargla, Algeria (plus 1 unapproved name)
     This is 1 of 1223 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)
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