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Itqiy
Basic information Name: Itqiy
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 1990
Country: Western Sahara
Mass:help 4.72 kg
Classification
  history:
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: Enstatite chondrites (type 4-7), Enstatite-rich meteorites, EH chondrites, and Enstatite chondrites
Writeuphelp
Writeup from MB 85:

Itqiy

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.

Institutions
   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)
Catalogs:
Search for this meteorite in the Natural History Museum collection (U.K.):   
    Require NHM photo
References: Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Labenne meteorites   
Peter Marmet   
Shinishi Kato   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
akira1988   
Allmeteorite.com   
Corey Kuo.      
Fred CHAPRON   
Piotr gural100   
Woreczko Jan & Wadi      
Geography:

Western Sahara
Coordinates:
     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

Statistics:
     This is 1 of 63 approved meteorites from Saguia el Hamra, Western Sahara
     This is 1 of 109 approved meteorites from Western Sahara (plus 18 unapproved names)
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