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Post Info TOPIC: Dronino meteorite


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RE: Dronino meteorite
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Title: Dronino: An Ancient Iron Meteorite Shower in Russia
Authors: Grokhovsky, V. I.; Ustyugov, V. F.; Badyukov, D. D.; Nazarov, M. A.

The fragments occur at a depth of 0.2- 2 m within an elliptic area of 0.75x1.5 km. The distribution of the fragments suggests that the meteorite formed a crater of about 30 m in diameter. This crater is not reflected in the present-day topography of the site.
The Dronino meteorite strewn field. Diameters of circles are proportional to masses of fragments. Proposed direction of the meteorite trajectory is from SE to NW.

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The Dronino meteorite is a classified as an ataxite (iron meteorite). Most of the meteoric iron is kamacite with minor amounts of taenite. The kamacite chemistry contains 7.0% Ni and 0.75% Co, whereas the taenite has 26.5% Ni and 0.35% Co (% of total mass). About 10% of the volume of the meteorite are sulfides. Accessory minerals include chromite and an iron-phosphate, which could possibly be graftonite.
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Meteorite Men S03E04 Dromino, Russia 19 December 2011

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Dronino
Ryazan district, Russia
Found July 2000
Iron, ataxite (ungrouped)
A 40 kg iron was found by Oleg Guskov, Moscow resident, as he was returning home from collecting mushrooms near the village of Dronino in the Ryazan district. In early 2003, it was taken to Vernad, and identified as meteoritic. In summer 2003, scientific expeditions and meteorite hunters collected more than 600 fragments (the largest is 250 kg) totaling about 3 000 kg and occurring at a depth of 0.2-2 m across an area of 0.5x1.5 km. The distribution of the fragments suggests that the meteorite formed a now-buried crater about 30 m in diameter. This crater is not reflected in the present-day topography of the site. No historical records exist of a meteorite fall, thus it appears likely that the meteorite fell earlier than the 12th century when the area was largely unpopulated.

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The Dronino (iron) meteorite was found in Ryazanskaya oblast', Russia, in July 2000. 
A total mass of 40 kg was recovered. 

54° 44' 48"N, 41° 25' 18"E 



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