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Basic information Name: Tihigrin
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes, probable fall
Year of probable fall: 2020
Country: Mali
Mass:help 6.53 kg
Meteoritical Bulletin:  MB 110  (2022)  L4
Recommended:  L4    [explanation]

This is 1 of 2061 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 16 Jan 2021
Writeup from MB 110:

Tihigrin        16.720°N, 3.729°W

Gao, Mali

Probable fall: 2020 Apr

Classification: Ordinary chondrite (L4)

History: Near sunset on an unspecified day during the first week of April 2020 a group of Tamachek nomads (including Mr. Emakny Ag Alhassane and Mr. Amoumene Ag Oyahitt) were drinking tea near the village of Béchéku, Mali when they observed a bright fireball traveling in a southerly direction and heard a loud explosion. After searching for two days hunters found a single, relatively large crusted stone at a location 11 km south of Béchéku near the small village of Tihigrin (at 16.720°N, 3.729°W). They informed their cousin (Mr. Mokhtar Ansary) about their experience and gave him the stone to take to Bamako for assessment and possible sale. People in Bamako contacted former resident Mr. Salim Habili, who in turn contacted Dr. Anthony Irving and shipped a sample to him for testing and classification.

Physical characteristics: A single stone (6534 g) almost completely coated by black fusion crust. The fresh interior is light gray with visible shiny metal.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, glass-bearing chondrules are set in a relatively coarse grained recrystallized matrix containing kamacite (with very slightly staining in the studied sample), taenite, troilite, low-Ti chromite, merrillite and chlorapatite.

Geochemistry: Olivine (Fa23.7±0.2, range Fa23.5-24.0, N = 6), low-Ca pyroxene (Fs18.1±2.4Wo1.3±0.5, range Fs14.1-20.0Wo0.5-1.9, N = 5), pigeonite (Fs16.3Wo16.2), augite (Fs10.4±0.7Wo35.5±3.0, range Fs9.9-10.9Wo37.6-33.4, N = 2), plagioclase in chondrules (An52.1Or1.2; An79.4Or0.2; N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 5.06.

Classification: Ordinary chondrite (L4).

Specimens: 60 g including one polished thin section at UWB; remainder with Mr. S. Habili.

Data from:
  Table 0
  Line 0:
Date:2020 Apr
Mass (g):6534
Shock stage:S2
Weathering grade:W0/1
Fayalite (mol%):23.7±0.2
Ferrosilite (mol%):18.1±2.4
Wollastonite (mol%):1.3±0.5
Magnetic suscept.:5.06
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):60.0
Type spec location:UWB
Main mass:S. Habili
Comments:Work name Mali-1; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Public domain photographs:
A. Irving   

     Recommended::   (16° 43' 12"N, 3° 43' 44"W)

     This is 1 of 30 approved meteorites from Gao, Mali (plus 1 unapproved name)
     This is 1 of 111 approved meteorites from Mali (plus 2 unapproved names)
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