|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: 4.72 kg
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
Writeup from MB 85:
Saguia el Hamra, Western Sahara
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.
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)
|References:||Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)|
This is 1 of 62 approved meteorites from Saguia el Hamra, Western Sahara
This is 1 of 92 approved meteorites from Western Sahara (plus 18 unapproved names)
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