|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
Mass: 1300 g
This is 1 of 9723 approved meteorites (plus 3 unapproved names) classified as L6. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
|Comments:||Approved 23 Sep 2013|
Writeup from MB 102:
Braunschweig 52°13.548’N, 10°31.193’E
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
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)
|References:||Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015|
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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