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Braunschweig
Basic information Name: Braunschweig
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 2013
Country: Germany
Mass:help 1300 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2014)  L6
Recommended:  L6    [explanation]

This is 1 of 9421 approved meteorites (plus 3 unapproved names) classified as L6.   [show all]
Search for other: L chondrites (type 4-7), Ordinary chondrites (type 4-7), L chondrites, and Ordinary chondrites
Comments: Approved 23 Sep 2013
Writeuphelp
Writeup from MB 102:

Braunschweig        52°13.548’N, 10°31.193’E

Niedersachsen, Germany

Fell: 2013 Apr 23, 02:05 a.m.

Classification: Ordinary chondrite (L6)

History: (R. Bartoschewitz, Bart) Erhard Seemann found a rock impacted into the concrete pavement in his yard 3 m from his front door on the morning of April 23, 2013. He documented his observation and collected the main fragments (~700 g) of the nearly complete fragmented stone. A neighbor heard a strong hum followed by a loud crash that night at about 2:10 a.m.  In the morning he found several small rock fragments (~25 g) in his gateway. In Ahlum village, Julian Mascow was surprised by a bright flare coming from the SE, ending in a short tracer just over his head. About 90 s later he was startled by an explosion and ensuing rattling sound around him. Mark Vornhusen’s web camera documented the fireball from Vechta. When Rainer Bartoschewitz documented the meteorite impact, he discovered many small fragments (~500 g) within 18 m of the others.

Physical characteristics: (R. Bartoschewitz, Bart) One meteorite of about 1.3 kg broken into hundreds of small fragments after impacting the concrete pavement. The biggest fragment, 214 g, stuck in the concrete making a 7-cm diameter by 3-cm deep depression. Other fragments were <30 g. The gray-white meteorite material is covered by a 0.4-mm thick dull black fusion crust with abundant 50 μm cracks. Magnetic susceptibility log χ = 4.75.

Petrography: (R. Bartoschewitz, Bart) Recrystallized matrix of olivine, pyroxene (0.02-0.5 mm) and secondary feldspar hosting poorly developed and deformed, dominantly barred olivine chondrules (0.5 to 15 mm, av. 1.5 mm), metal, troilite and chromite. Dark metal-troilite veins (50 µm) cross the meteorite.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) olivine Fa24.3-26.0 (mean Fa25.2±0.40, n=33); Ca-poor pyroxene Fs20.8-21.7Wo1.0-1.8 (mean Fs21.3±0.24Wo1.6±0.20, n=12); Ca-rich pyroxene Fs8.1-8.8Wo44.4-45.2 (mean Fs8.4±0.40Wo44.7±0.35, n=4); feldspar An11-18Or 4-10, chromite Cr/(Cr+Al)=88.3, Fe/(Fe+Mg)=79.8. Kamacite Ni=4.7-6.2, Co=1.0; taenite Ni=20-34, Co=0.3-0.7 (all in wt.%)

Classification: L chondrite (L6, S4, W0)

Specimens: 700 g, E. Seemann, Braunschweig, 570 g of which is on permanent loan to SNMB; type specimen of 25 g, MKBraun; 500 g, Bart

Data from:
  MB102
  Table 0
  Line 0:
State/Prov/County:Niedersachsen
Origin or pseudonym:yard
Date:2013 Apr 23, 02:05 a.m.
Latitude:52°13.548'N
Longitude:10°31.193'E
Mass (g):1300
Pieces:1
Class:L6
Shock stage:S4
Weathering grade:W0
Fayalite (mol%):25.2±0.40 (n=23)
Ferrosilite (mol%):21.3±0.24 (n=12)
Wollastonite (mol%):1.6±0.20
Magnetic suscept.:4.75
Classifier:R. Bartoschewitz
Type spec mass (g):26.2
Type spec location:MKBraun
Main mass:E. Seemann, MKBraun
Finder:E. Seemann, R. Bartoschewitz
Comments:Submitted by Bartoschewitz
Institutions
   and collections
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
MKBraun: Mineralien-Kabinett, Mineralogisch-petrographisches Museum, Technische Universität Braunschweig, Bienroderweg 95, 38106 Braunschweig, Germany, Germany; Website (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Lehmweg 53, D-38518 Gifhorn, Germany; Website (private address; updated 4 Aug 2013)
SNMB: Staatliches Naturhistorisches Museum Braunschweig, Pockelsstraße 10 38106 Braunschweig , Germany; Website (institutional address; updated 24 Sep 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Auricular   
Gregor H.   
Jörg-Florian Jensch   
Public domain photographs:
E. Seemann      
R. Bartoschewitz      
Geography:

Germany
Coordinates:
     Recommended::   (52° 13' 33"N, 10° 31' 12"E)

Statistics:
     This is 1 of 8 approved meteorites from Niedersachsen, Germany (plus 2 unapproved names)
     This is 1 of 51 approved meteorites from Germany (plus 22 unapproved names) (plus 2 impact craters)
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