header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 17 Oct 2021
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Oyo
Basic information Name: Oyo
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2019
Country: Nigeria
Mass:help 1975 g
Classification
  history:
Recommended:  LL4    [explanation]

This is 1 of 377 approved meteorites classified as LL4.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Sep 2020
Writeuphelp
Writeup from MB 109:

Oyo        7.877°N, 3.963°E

Oyo, Nigeria

Find: 2019 Jan

Classification: Ordinary chondrite (LL4)

History: Three similar-appearing stones were found together 4.4 km NE of the town of Oyo, Nigeria at 7.877°N, 3.963°E and were purchased from the finder by Mbark Arjdal in January 2019.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Closely packed, well-formed chondrules are set in a sparse matrix containing altered kamacite, taenite, chromite, troilite and merrillite.

Geochemistry: Olivine (Fa28.3±0.2, range Fa28.1-28.5, N = 6), low-Ca pyroxene (Fs23.4±0.5Wo1.6±0.3, range Fs23.0-24.3Wo1.4-2.0, N = 6), augite (Fs8.3±0.3Wo45.4±0.1, range Fs8.0-8.5Wo45.3-45.5, N = 3). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.41.

Classification: Ordinary chondrite (LL4).

Specimens: 54.2 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB109
  Table 0
  Line 0:
State/Prov/County:Oyo
Place of purchase:Nigeria
Date:2019 Jan
Latitude:7.877°N
Longitude:3.963°E
Mass (g):1975
Pieces:3
Class:LL4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):28.3±0.2
Ferrosilite (mol%):23.4±0.5
Wollastonite (mol%):1.6±0.3
Magnetic suscept.:3.41
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):54.2
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj ZM 337; submitted by A. Irving
Institutions
   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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Nigeria
Coordinates:
     Recommended::   (7° 52' 37"N, 3° 57' 47"E)

Statistics:
     This is 1 of 2 approved meteorites from Oyo, Nigeria
     This is 1 of 21 approved meteorites from Nigeria
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page