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Basic information Name: Itqiy
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1990
Country: Western Sahara
Mass:help 4.72 kg
NHM Catalogue:  5th Edition  (2000)  Stone-ung
Meteoritical Bulletin:  MB 85  (2001)  Enstatite meteorite-ung
MetBase:  v. 7.1  (2006)  EH7-an
Recommended:  EH7-an    [explanation]

This is the only approved meteorite classified as EH7-an.
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Revised 5 Apr 2020: Itqiy changed to a find
Writeup from MB 85:


Saguia el Hamra, Western Sahara

Fell ~1990

Ungrouped enstatite-rich meteorite

In the year 1990 (±1 year), after a detonation and the appearance of light, one stone of 410 g was recovered near Itqiy by a nomad. A larger stone weighing 4310 g was recovered by Marc, Luc, and Jim Labenne while searching for meteorites in the same place in 2000 July.  The larger stone has a black fusion crust exhibiting flow lines. Classification and mineralogy (D. Hill and A. Patzer, UAz): has an equigranular texture showing numerous triple junctions; enstatite (grain size 0.5–4 mm), 78 vol%, has Fs0.2Wo3.0; metal (grain size 0.2–2 mm), 22 vol%, is kamacite with Fe = 90.4 wt%, Ni = 5.77 wt%, Si = 3.13 wt%, in the EH compositional range; troilite is nearly absent; Mg-Mn-Fe sulfides with compositions intermediate between typical E-chondrite niningerite and alabandite, plus unusual Fe-Cr sulfides are heterogeneously distributed in intergranular regions (0.2–1 mm in diameter); bulk Mg/Si = 0.82 mol/mol, in the lower EL range (slightly higher than EH); bulk Fe/Si = 1.13 mol/mol, in the high EH range; no relic chondrules are observed; shock stage, S5, weathering grade W1–2. For further details see Patzer et al. (2001). Specimens: main mass with Labenne; type specimen, 22.17 g, includes two thin sections, UAz.

Writeup from MB 109:
Itqiy: not a fall

Based on information in Patzer et al. (2002), wherein a long terrestrial age was reported, Itqiy will no longer be listed as an observed fall.
  • Patzer A., Hill D.H., Boynton W.V., Franke L., Schultz L., Jull A.J.T., McHargue L.R., and Franchi I.A. (2002) Itqiy: A study of noble gases and oxygen isotopes including its terrestrial age and a comparison with Zak?odzie. Meteorit. Planet. Sci. 37, 823-833. (link)
Plots: O isotopes:  
   and collections
UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
Search for this meteorite in the Natural History Museum collection (U.K.):   
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References: Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)
Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.
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Western Sahara
     Catalogue of Meteorites:   (26° 35'N, 12° 57'W)
     Recommended::   (26° 35' 27"N, 12° 57' 8"W)
Note: the NHM and MetBase coordinates are 0.9 km apart

     This is 1 of 117 approved meteorites from Saguia el Hamra, Western Sahara (plus 1 unapproved name)
     This is 1 of 283 approved meteorites from Western Sahara (plus 20 unapproved names)
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