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Basic information Name: Ouadangou
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 2003
Country: Burkina Faso
Mass:help 4.44 kg
Meteoritical Bulletin:  MB 102  (2013)  L5
Recommended:  L5    [explanation]

This is 1 of 6721 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Feb 2013
Writeup from MB 102:

Ouadangou        12.9° N, 0.08° E

Gnagna, Burkina Faso

Fell: November 2003

Classification: Ordinary chondrite (L5)

History: In November of 2003, Michael Farmer traveled to Burkina Faso to purchase meteorites. During his visit he heard of a recent fall near the town of Bilanga. Mr. Farmer bought ~1.6 kg of the new fall in Bilanga, then traveled to the fall site ~40 km NNW to the villages of Batiawo and Lampiaiyre  (several km SE of Oudangou). Here he purchased the remaining 2.84 kg of stones. According to the villagers of Batiawo and Lampyaire, the stones fell within the villages and surrounding bushland, during the afternoon in early November 2003, though the exact date could not be agreed upon. Several of the stones from Batiawo had been broken into pieces by villagers. The largest stone (broken into three pieces) is 2031 g.

Physical characteristics: All stones are well-rounded showing broad, poorly developed regmaglypts, and covered by a velvety fusion crust up to 0.5 mm thick. The few reddish patches on the exterior are from the local soil. Interior is primarily white, with heterogeneous distribution of gray clasts. Clasts to 5 cm, rounded, some with scalloped margins. A few large metal-troilite nodules, to 1.5 cm. Sparse shock veining. None of the stones show signs of rusting.

Petrography: (L. Garvie, ASU) Matrix largely recrystallized with disseminated plagioclase grains <50 μm, rarely to 200 μm. Scattering of distinct chondrules, some to 1 mm, including RP, PO, and BO. Localized melting forming silicate-metal-sulfide pods. Two 1 cm2 sections show ~10 Cu grains each. Cu grains (<50 μm across) occur at metal/sulfide boundaries, and associated as a complex taenite-troilite-copper assemblage. Troilite grains show a range of pressure effects from undistorted and monocrystalline, to those with undulose extinction and a few exhibiting spindle-like twin lamellae. Chromite grains extensively fractured. Range of achondritic clast types, from dark and fine-grained to light colored with a sugary texture. Two of the light-colored clasts contain white veins. Clasts largely metal-troilite free, medium-grained, some vuggy with euhedral crystals.

Geochemistry: Olivine Fa24.6±0.3, range 24.1 to 25.3, FeO/MnO=48.3±3.3, n=13. Two grains P-rich, with P2O5 to 0.11 wt%. Low Ca pyroxene Fs20.2±0.2, range 20.2 to 20.6, Wo1.4±0.1, range 1.2 to 1.6, n=7.

Specimens: 197 g at ASU.

Data from:
  Table 0
  Line 0:
Date:November 2003
Latitude:12.9° N
Longitude:0.08° E
Mass (g):4440
Weathering grade:W0
Fayalite (mol%):24.6±0.3
Ferrosilite (mol%):20.2±0.2
Wollastonite (mol%):1.4±0.1
Classifier:L. Garvie, ASU
Type spec mass (g):197
Type spec location:ASU
Main mass:Mr. Boudreaux
Finder:Villagers of Batiawo and Lampiaiyre
Comments:Submitted by L. Garvie
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
Boudreaux: Terry Boudreaux, Illinois, United States (private address)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Jörg-Florian Jensch   
Woreczko Jan & Wadi   
Public domain photographs:
L. Garvie, ASU   
Terry Boudreaux   

Burkina Faso
     Recommended::   (12° 54' 0"N, 0° 4' 48"E)

     This is 1 of 2 approved meteorites from Gnagna, Burkina Faso
     This is 1 of 10 approved meteorites from Burkina Faso
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