Braunschweig meteorite, Brunswick, Lower Saxony, Germany
|Latitude & Longitude (WGS84):||52° 13' 33'' North , 10° 31' 12'' East|
|Latitude & Longitude (decimal):||52.2258333333, 10.52|
|Name(s) in local language(s):||Braunschweig Meteorit, Braunschweig, Niedersachsen, Deutschland|
Ordinary chondrite, (L6, S4, W0)
Fell, 23 April 2013, 1.3 kg
After a loud crash around 2 AM, a rock struck the concrete pavement, making a 3 cm depression while breaking into numerous fragments. A fireball was simultaneously observed from a nearby village. On the next morning one 214 gram piece was found stuck in the concrete and soon numerous fragments were found by several people within 20 meters of the concrete hole. As is normal for many chondritic stones, this meteorite is compositionally dominated by a recrystallized silicate matrix with minor amounts of Fe-Ni metal and troilite. The overall, mildly variable, olivine composition (Fa~25), is indicative of its L-chondrite (low-total iron) group membership. In this instance the matrix hosts conspicuous barred olivine chondrules, deformed secondary feldspar, dark crosscutting troilite-metal veins with variable metal, and smaller assortae. Since its original assemblage on an ancient original parent body (OPB), the meteorite has thus experienced three major transforming events: (1) significant recrystallization [presumably on the OPB], (2) a very strong level 4 shock [on the OPB or a smaller asteroidal fragment], and (3) a fiery atmospheric entry ending with a very abrupt collision at the earth's surface.
For now, however, 570 grams of the small L6 chondrite is being held on permanent loan at the Staatliches Naturhistorisches Museum Braunschweig in Germany. Braunschweig is the last of 9 observed L chondrites falls recorded in Germany since 1819. Seven of them have been L6 chondrites.
7 valid minerals.
This information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This data will improve over time as more accurate maps and data sets are added.
|Cretaceous66 - 145 Ma||Cretaceous sedimentary rocks|
References for regional geology:
Data provided by Macrostrat.org
Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.
Szurgot, M., Wach, R. A. & Bartoschewitz, R. (2014) Thermophysical Properties of the Braunschweig Meteorite. 77th Annual Meeting of the Meteoritical Society. LPI Contribution No. 1800, id.5015. (Sept 2014)
Hochleitner, R., Hoffmann, V. H., Kaliwoda, M., Yamamoto, Y., Mikouchi, T., Guenther, A. & Fehr, K. Th. (2015) Moessbauer and Raman Spectroscopical Data of the New German Meteorite Braunschweig (Fall 2013, L6 Ordinary Chondrite): Lunar and Planetary Science Conference XLVI. LPI Contribution No. 1832, p.1471. (Mar 2015)