{"id":8021,"date":"2016-03-17T13:19:38","date_gmt":"2016-03-17T12:19:38","guid":{"rendered":"http:\/\/karmaka.de\/?p=8021"},"modified":"2018-09-14T22:58:21","modified_gmt":"2018-09-14T20:58:21","slug":"first-meteorites-of-the-fall-near-simbach-am-inn-bavaria-germany-on-6-march-at-93652-p-m-utc-have-been-found","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=8021","title":{"rendered":"STUBENBERG – Fall (LL6) in Bavaria, Germany on 6 March 2016 at 9:36:51-56 p.m. UTC"},"content":{"rendered":"

An updated and extended version of this post
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STUBENBERG<\/a><\/strong><\/span><\/p>\n

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<\/div>\nLast update: 31 May 2017
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The Stubenberg meteorite\u2014An LL6 chondrite fragmental breccia recovered soon after precise prediction of the strewn field<\/strong><\/a>
\nBischoff, A., Barrat, J.-A., Bauer, K., Burkhardt, C., Busemann, H., Ebert, S., Gonsior, M., Hakenm\u00fcller, J., Haloda, J., Harries, D., Heinlein, D., Hiesinger, H., Hochleitner, R., Hoffmann, V., Kaliwoda, M., Laubenstein, M., Maden, C., Meier, M. M. M., Morlok, A., Pack, A., Ruf, A., Schmitt-Kopplin, P., Sch\u00f6nb\u00e4chler, M., Steele, R. C. J., Spurn\u00fd, P. and Wimmer, K.
\nMeteoritics & Planetary Science. doi: 10.1111\/maps.12883 abstract<\/strong><\/a>
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The Stubenberg main mass and other found specimens of this fall were presented for the first time at The Munich Show (28-30 October 2016) at booth A5.431.<\/strong><\/p>\n

‘Stubenberg’ at the Munich Show 2016<\/strong>
\nAbendschau, BR TV, 28 October 2016
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Stubenberg at the Munich Show 2016<\/div>
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On 12 May 2016 Stubenberg<\/a> was officially registered as LL6 (S3\/W0) in the Meteoritical Bulletin Database.<\/p>\n

“Stubenberg 48\u00b017.7\u2019N, 13\u00b07.0\u2019E<\/span>
\nBayern, Germany<\/span>
\nConfirmed fall: 2016 Mar 6<\/span>
\nClassification: Ordinary chondrite (LL6)<\/span><\/p>\n

History: (Pavel Spurn\u00fd, CzAS). A very bright bolide was observed by thousands of eyewitnesses over Austria, Germany and the Czech Republic on March 6, 2016, at 21:36:51-56 UT. It was recorded photographically and photoelectrically by digital all-sky fireball observatories at six Czech stations of the European Fireball Network. A digital photographic spectrum of the bolide was also obtained. Based on these instrumental data, precise results on atmospheric trajectory, heliocentric orbit, and fragmentation history were quickly determined. From this analysis it was evident that this event likely resulted in multiple stones falling: the impact site was modeled and sent to German colleagues four days after the fall. All of the meteorites were found in the predicted location for a given mass.<\/span>
\nPhysical characteristics: (D. Heinlein). A total mass of 1.473 kg was recovered within the predicted fall site. The largest fragment has a mass of 1.320 kg and was found in a 14-cm-deep impact pit. The remaining 153 g of material consists of several pieces resulting from five different fragments. The first meteorite, 48 g, was found six days after the fall: it was broken into many pieces after hitting a hard surface. The other recovered fragments have masses of 42, 36, 19, and 8 g.<\/span>
\nPetrography: (S. Ebert and A. Bischoff, IfP). Based on the study of the thin sections, Stubenberg is brecciated. Only highly recrystallized fragments (type 6) were observed, having only very rare, indistinct chondrules. Plagioclase (some >100 \u03bcm) and olivine show undulatory extinction, and the olivines show distinct sets of planar fractures indicating that the rock is weakly shocked (S3). Opaque phases include metals (kamacite, taenite), troilite, and chromite. Other accessory phases include Cl-apatite and merrillite. Several shock veins cross the meteorite.<\/span>
\nGeochemistry: (S. Ebert and A. Bischoff, IfP). The mean composition of olivine is Fa31.4\u00b10.3 (Fa30.5-32.2, n=54). The low-Ca pyroxenes and Ca-pyroxenes have mean compositions of Fs25.4\u00b10.3 (Fs24.8-26.1, n= 43) and Fs11.2Wo41.4 (n=7), respectively. Mean plagioclase composition is An11.1\u00b10.4Or5.5\u00b11.2 (An10.3-12.1, n= 42). Kamacite has mean Ni and Co concentrations of 3.9 and 6.1 wt%, respectively (n=8). The taenite composition is variable, with Ni content varying from 41.9 to 48.2 wt% (mean: 44.3 wt% Ni, ~1.8 wt% Co, n=38).<\/span>
\nClassification: LL chondrite breccia (LL6, S3, W0)<\/span>
\nSpecimens: Type Specimens: 20.1 g, IfP; the main masses are with the finders.<\/span>“<\/p>\n

TV report about the Stubenberg meteorite<\/strong>
\nMeteorit in Niederbayern – Endlich ein gro\u00dfes St\u00fcck vom Himmel<\/em>
\n(BR3 Television \/ April 26, 2016 \/ 17:55 CEST)<\/p>\n

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The 1320 g main mass<\/strong> (April 1)<\/span><\/p>\n

\"The<\/a>

The 1320 g main mass in situ (Photo R. Sporn, M. Neuhofer)<\/p><\/div>\n

\"Fall<\/a> On April 14 Dr. Pavel Spurn\u00fd published a press release<\/a> announcing that on April 1, after about 400 hours of systematic search, Ralph Sporn and Martin Neuhofer found a 1320 g specimen (5th find) embedded about 15 centimetres deep in the beech leaf-covered forest soil at location 48\u00b018’20.9″N, 13\u00b005’36.5″E <\/a>, 515 metres a.s.l. and about 95 metres north-northeast of Kammerhub<\/em> in the H\u00f6sling<\/em> parcel of the Entenmoos<\/em> forest at the eastern fringe of the municipality of Stubenberg<\/em>. The meteorite was covered by a pine branch which had probably been hit by the falling meteorite and fell directly on the impact pit.<\/p>\n

\"The<\/a>

The 1320 g mass pictured from four different angles (Photo: P. Spurn\u00fd, AI CAS)<\/p><\/div>\n[wc_row][wc_column size=”one-half” position=”first”]\n

\"The<\/a>

The pine branch covering the impact pit of the 1320 g mass (Photo: R. Sporn, M. Neuhofer)<\/p><\/div>\n[\/wc_column][wc_column size=”one-half” position=”last”]\n

\"R.<\/a>

R. Sporn and M. Neuhofer just after the recovery of the 1320 g mass (Photo: R. Sporn, M. Neuhofer)<\/p><\/div>\n[\/wc_column][\/wc_row]\n

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