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Basic information Name: Saint-Ouen-en-Champagne
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes, probable fall
Year of probable fall: 1799
Country: France
Mass:help 4.6 kg
Meteoritical Bulletin:  MB 109  (2020)  H5
Recommended:  H5    [explanation]

This is 1 of 11764 approved meteorites (plus 23 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 9 Feb 2020
Writeup from MB 109:

Saint-Ouen-en-Champagne        47°57’51’’N, 0°9’40’’W

Pays de la Loire, France

Probable fall: 29 Sep 1799

Classification: Ordinary chondrite (H5)

History: A 12 g sample labelled as Saint-Ouen-en-Champagne discovered in the Chadel collection in 2006 drew the attention of the meteoritical community on another, homonymous 39 g sample curated in LeMans, in the département of the eponymous commune. The curator Nicolas Morel found in the local learned literature several mentions of this fall, which occurred after a violent thunder clap on September 29, 1799, at 3 pm, in the farm Le Pin in Saint-Ouen-en-Champagne. The stone, which weighed 9 pounds 7 ounces, fell at the feet of a day laborer and was at first too hot to touch. It was subsequently divided among several naturalists, but only 51 g are currently extant.

Physical characteristics: fragment dull gray in color, studded with minuscule metallic grains, partly covered by a blackish/brown fusion crust

Petrography (T. Shisseh, FSAC and S. Pont, MNHP): Polished section showing typical chondrite texture with moderate number of chondrules and abundant scattered metal. Fusion crust is up to 0.75 mm locally with abundant vesicles up to 100 μm. Chondrules are up to 1 mm and rarely 2 mm. Many have well-defined borders and other do not. Chondrules types are porphyritic olivine-pyroxene (POP), barred olivine (BO), granular olivine-pyroxene (GOP) and possible remnant radiating pyroxene chondrules (RP). Olivine and orthopyroxene are the dominant phases with minor chromite, Ca-pyroxene, apatite and troilite. Metal and sulfides are interstitial to olivine and pyroxene and clustered in the form of large anhedral grains enclosing silicates. Few silicates are embedded in metal. No nodule-shaped metal was observed.

Geochemistry: Mineral composition and geochemistry (T. Shisseh, H. Chennaoui Aoudjehane, FSAC): Olivine Fa18.22±0.21 (N=12) Opx = En82Fs16Wo2 (N=3) Clinopyroxene= En48 Fs6 Wo46 (N=1) and En75 Fs15 Wo8 (N=2). Plagioclase is Ab80-83 An12-16 Or4-5. Chromite compositions are Cr/(Cr+Al)=0.91 and Fe/(Fe+Mg)=0.9 (N=3). Kamacite with 6% Ni.

Classification: Ordinary chondrite (H5)

Specimens: 38 g, LeMans, type specimen; 12 g, A. Carion; 1 g, MNHNP

Data from:
  Table 0
  Line 0:
State/Prov/County:Pays de la Loire
Date:29 Sep 1799
Mass (g):4600
Weathering grade:W1
Fayalite (mol%):18.2±0.2 (N=12)
Ferrosilite (mol%):16.2±0.2 (N=3)
Wollastonite (mol%):1.4±0.2 (N=3)
Classifier:T. Shisseh, FSAC; M. Bourot-Denise, B. Zanda, S. Pont, C. Caillet, E. Jacquet, MNHNP
Type spec mass (g):38
Type spec location:LeMans
Main mass:LeMans
Comments:Submitted by T.Shisseh
   and collections
MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address)
FSAC: Universite Hassan II Casablanca, Faculte des Sciences Ain Chock, Departement de Géologie, BP 5366 Maârif, Casablanca, Morocco (institutional address; updated 9 Jan 2013)
Carion: Alain Carion, 6 rue Jean du Bellay, 75004 Paris, France; Website (private address)
LeMans: Musée Vert, Muséum d’histoire naturelle du Mans 204 Avenue Jean Jaurès 72100 Le Mans, France; Website (institutional address; updated 23 Dec 2019)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Public domain photographs:
Shisseh Taha      

     Recommended::   (47° 57' 51"N, 0° 9' 40"W)

     This is 1 of 4 approved meteorites from Pays de la Loire, France
     This is 1 of 78 approved meteorites from France (plus 12 unapproved names) (plus 1 impact crater)
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