Oldenburg meteorite
The meteorite Oldenburg (official name Oldenburg (1930 ), also known Bissel, Beverbruch alias ) was a stony meteorite with a mass of 16.57 kg, the on September 10, 1930 at 14:15 clock in at least two major fragments in the villages Bissel ( Great community kneading, 4.84 kg ), 23 km south of Oldenburg ( Lower Saxony) and Beverbruch (municipality Garrel, 11.73 kg ) and 4.4 km north- west of Bissel fell from the sky after being in about 4 km altitude above the village Döhlen, community Großenkneten, broke into at least two main parts.
There is a 4.56 billion years old chondrites Class L6 ( low- metal, iron content: 21.5 % by weight). It is not identical with the meteorite in 1951 also found near Oldenburg Benthullen, as this indeed has the same L- class, but against the Oldenburg meteorite is low in chondrules.
Origin
Like all L- chondrites came Oldenburg ( 1930), probably from the asteroid Eros and was born when these clashed against alleged millions of years with another asteroid and fragments of the asteroid belt left on an eccentric orbit, eventually crossed the Earth's orbit and crashed as meteorites. The reflection spectra of this asteroid nearly meets with those of the L- and LL- chondrites.
Impact and Fund
On September 10, 1930 at 14:15 clock the population south of Oldenburg by a loud bang followed by loud buzzing and whistling and a second bang was startled.
At this time, the shepherd Clemens Bley were with his sheep on the heath at Beverbruch and the farmer Johann Schnieders from Halenhorst on his bike on the way to Bissel. Both drove up startled when she heard a violent roar and ringing in their vicinity. They had the feeling that something might fly " just above their heads ", and then enter into indirect or very close to earth.
The shepherd Bley was only 19 meters from the impact point, the farmer a little further. Schnieders grub along with the living nearby farmer's son Ernst Gotelüschen in the hopper and found in 35 cm depth a mostly black stone of 24 cm length and 12.5 cm wide with a weight of 4.85 kg. Bley lifted from a 50 cm deep hole a similar stone of 11.73 kg. Both pieces had a black fusion crust and fresh, light gray fracture surfaces that fit together precisely.
The meteorite may thus be broken apart only in the lower atmosphere, otherwise the fracture surfaces would also have a black fusion crust. After measurements of the crater hole of Bissel and the evaluation of the case sounds, because only in them, the two finder could have oriented the meteorite about 53 ° from the east should be coming smashed into the ground, while the part of Beverbruch caused a vertical crater. The meteorite should therefore be broken up into about 4,100 m height above the village Döhlen into two main parts, which caused the second explosion.
Besides the two finders of eye witnesses of the meteorite fall were identified from the area, so in wages (Oldenburg ), about 7 km SSW of Vechta exactly where to set the time a striking light phenomenon was observed. It has failed to consult the eye and ear witnesses immediately after learning of the case. Thus, the trajectory of the meteorite would have been to identify safer. It will be assumed, a third fragment was never found.
Another inaccuracy is the naming. Usually designates one meteorite after the site, ie according to the site, which lies in close proximity. Both stones but were named after well over 20 km northern Oldenburg.
The former " main village schoolmaster " Konrad Meyer (1885-1965) from Nikolausdorf bought the two parts of Shepherd Bley and farmer Schnieders from and handed over both halves to the Museum Cloppenburg: the smaller " Bissel " fragment for sale and the larger " Beverbruch " part permanent loan. According to the message Münsterländische daily newspaper of 22 August 2012, the disappeared " Bissel " fragment from the Museum village and despite looking untraceable. The fragment was loaned to the Oldenburg State Museum for an exhibition in 2000 /2001. From there, the stone shall not be returned according to data of the museum village Cloppenburg. However, this is contradicted by the Oldenburg State Museum. The fragment is thus lost.
In 1995, the larger meteorite piece " Beverbruch " by the daughter and heiress Meyers, Dorothea Meyer, was offered for sale and is now in private hands.