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Abbans-Dessous
Basic information Name: Abbans-Dessous
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2015
Country: France
Mass:help 3.12 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2740 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 9 Jan 2017
Writeuphelp
Writeup from MB 106:

Abbans-Dessous        47°7.905’N, 5°52.533’E

Franche-Comté, France

Find: 2015 Jul 25

Classification: Ordinary chondrite (LL6)

History: On 25 July 2015, while he was looking for fossils in the Franche-Comté region, geologist Quentin Louis discovered a small black stone in the vicinity of Abbans-Dessous village, and recognized it as a possible meteorite. On 3 August 2015, he contacted Fabien Kuntz, a meteorite hunter living nearby in Besançon, who confirmed the stone was a meteorite. Despite several days of hunting together in the area over the summer 2015, and a notice to the local population, no other stones were found.

Physical characteristics: A single, fully crusted, roughly cubic stone.

Petrography: Microscopic observations on a polished section show a recrystallized chondritic texture with chondrules making most of the volume. Plagioclase to 100 μm. Chromite to 150 μm. The bulk density (bulk volume from X-ray microtomography) is 3.15 g/cm3 in agreement with the average LL value (3.21±0.22, N=39 falls, see Britt and Consolmagno, 2003).

Geochemistry: Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.20. Saturation magnetization (measured on the full stone) is 3.74 Am2/kg. Other magnetic properties indicate that a significant fraction of the FeNi metal is tetrataenite. Olivine Fa29.0±0.1 (N=2), Orthopyroxene Fs23.9±0.3 Wo2.0±0.2 (N=2).

Classification: LL6.

Specimens: Type specimen (including a polished section) at CEREGE. Main mass with the finder Quentin Louis.

Bibliography:
  • D.T. Britt and G.J. Consolmagno S. J. (2003) Stony meteorite porosities and densities: A review of the data through 2001. Meteorit. Planet. Sci. 38, 1161–1180 (link)
Data from:
  MB106
  Table 0
  Line 0:
State/Prov/County:Franche-Comté
Date:2015 Jul 25
Latitude:47°7.905'N
Longitude:5°52.533'E
Mass (g):3.116
Pieces:1
Class:LL6
Weathering grade:W1
Fayalite (mol%):29.0±0.1 (N=2)
Ferrosilite (mol%):23.9±0.3 (N=2)
Wollastonite (mol%):2.0±0.2 (N=2)
Magnetic suscept.:4.20
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):0.657
Type spec location:CEREGE
Main mass:Quentin Louis
Finder:Quentin Louis
Comments:Submitted by Jérôme Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography:

France
Coordinates:
     Recommended::   (47° 7' 54"N, 5° 52' 32"E)

Statistics:
     This is 1 of 2 approved meteorites from Franche-Comté, France
     This is 1 of 76 approved meteorites from France (plus 11 unapproved names) (plus 1 impact crater)
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