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Cheder
Basic information Name: Cheder
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2003
Country: Russia
Mass:help 5.39 kg
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  IIIAB
MetBase:  v. 7.1  (2006)  IIIAB
Recommended:  Iron, IID    [explanation]

This is 1 of 24 approved meteorites classified as Iron, IID.   [show all]
Search for other: IID irons, Iron meteorites, and Metal-rich meteorites
Comments: Revised 11 Jan 2007: Reclassified by Wasson and Huber (2006)
Writeuphelp
Writeup from MB 88:

Cheder

Tuva, Russian Federation

Found 2003 October 26

Iron IIIAB (medium octahedrite)

A fresh iron piece weighing 5.39 kg was found during field work by Valery Popov, a geologist of the Institute of Complex Exploration of Natural Resources, Kyzyl, Tuva. The meteorite was recovered on a deflated surface of aeolian sands. It is 26x9x8 cm in size, and has a thin fusion crust and regmaglypts. Classification and mineralogy (L.V.Agafonov, L.N.Pospelova, Novosibirsk): Kamacite (5.5-6.8 wt% Ni) and taenite (22-38 wt% Ni) form  the Widmanstätten pattern with 1-1.5 mm kamacite bands; schreibersite (22-48 wt% Ni) is present. INAA data (A.Lorenz, Vernad):  Ni 72.4, Co 4.4 (mg/g), As 3.26, Ir 16.9, Au 0.50 (μg/g) indicate the IIIA group. Specimens: 200 g, Institute of Complex Exploration of Natural Resources, Kyzyl, Tuva; 100 g, Novosibirsk; main mass and type specimen, Vernad.


Writeup from MB 90:
In Meteoritical Bulletin No. 88, the meteorite Cheder is classified as an iron (IIIAB), but it is actually an iron (IID).
Institutions
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
Novosibirsk: Institute of Geology, Geophysics and Mineralogy, Russia (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
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Geography:

Russia
Coordinates:
     Recommended::   (51° 32'N, 94° 36'E)

Statistics:
     This is 1 of 2 approved meteorites from Respublika Tyva, Russia
     This is 1 of 145 approved meteorites from Russia (plus 5 unapproved names) (plus 19 impact craters)
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