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Basic information Name: Sokoto
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes, confirmed fall
Year fell: 2008
Country: Nigeria
Mass:help 30 kg
Meteoritical Bulletin:  MB 107  (2018)  Iron, IIIAB
Recommended:  Iron, IIIAB    [explanation]

This is 1 of 347 approved meteorites classified as Iron, IIIAB.   [show all]
Search for other: IIIAB irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 16 Jun 2018
Writeup from MB 107:

Sokoto        13°0.3’N, 5°14.85’E

Sokoto, Nigeria

Confirmed fall: 10 Jan 2008

Classification: Iron meteorite (IIIAB)

History: According to a newspaper report (THISDAY, January 11, 2008), a meteorite fell after a loud explosion and fireball at approximately 10:00 pm local time (2100h UTC) on 10 Jan 2008. The meteorite reportedly destroyed the roof of the house of Malam Bello Mohammed, in Mana Village, South Sokoto Local Government Council (on the outskirts of the city of Sokoto), and was found almost 2 m deep in the ground. The main mass reportedly weighs approximately 30 kg, and was broken into pieces with a hammer. A 240 g specimen was secured by Nigerian resident Eugene Egbe, who provided it to Twelker. Other pieces are reportedly with the Geological Survey Laboratory in Kaduna.

Physical characteristics: The meteorite is irregularly shaped, with deep regmaglypts, and a red-brown exterior.

Petrography: (C. Herd, UAb) Optical investigation of a ~2 × 3 cm polished and etched surface reveals a well-developed Widmanstatten pattern consistent with a medium octahedrite (0.9±0.2 mm; n=22). No obvious inclusions were noted. Terrestrial alteration has occured along fractures connecting to the exterior.

Geochemistry: ICP-MS data, using sample of North Chile (Filomena) as standard (C. Herd and G. Chen UAb): Ni = 8.6, Co = 0.51 (both wt%); Ir = 1.7, Ge = 41, As = 16.8, W = 1.1, Re = 0.16, Pt = 6.8, Cu = 158, Au = 1.6 (all μg/g).

Classification: (C. Herd, UAb): IIIAB iron, through comparison of bulk composition with data from Wasson and Richardson (2001).

Specimens: Type specimen consisting of one representative slice (21.9 g) at UAb. A 240 g mass with Twelker.

  • Wasson J.T. and Richardson J.W. (2001) Fractionation trends among IVA iron meteorites: contrasts with IIIAB trends. Geochem. Cosmochim. Acta 65, 951-970. (link)
Data from:
  Table 0
  Line 0:
Date:10 Jan 2008
Mass (g):30000
Class:Iron, IIIAB
Shock stage:low
Weathering grade:low
Classifier:C. Herd, UAb
Type spec mass (g):21.9
Type spec location:UAb
Main mass:Unnamed owner in Abuja
Comments:Submitted by C. Herd
   and collections
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     Recommended::   (13° 0' 18"N, 5° 14' 51"E)

     This is 1 of 2 approved meteorites from Sokoto, Nigeria
     This is 1 of 23 approved meteorites from Nigeria
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