Pallasovka (meteorite)
| Pallasovka | |
|---|---|
 |
|
| Pallasovka | |
| Type | Stony-iron |
| Class | Pallasite |
| Group | Main Group Pallasite (anomalous) |
| Composition | Olivine: Fe/Mn = 45.2, Fe/Mg = 0.14; Metal: Fe 86 wt%, Ni 13.1 wt%, Ir 0.12 ppm, Au 2.8 ppm, Pt 3.2 ppm, Ga 22.5 ppm, Ge 24.9 ppm |
| Country | Russia |
| Region | Volgograd Oblast |
| Coordinates | 49°52′0″N 46°36′42″E / 49.866667°N 46.61167°ECoordinates: 49°52′0″N 46°36′42″E / 49.866667°N 46.61167°E[1] |
| Observed fall | No |
| Found date | July 1990 |
| TKW | 198 kg |
Pallasovka is a pallasite meteorite found in 1990 near the town of Pallasovka, Russia.
Contents |
[edit] History
One single mass of 198 kg was found 27.5 km from the town of Pallasovka by N. F. Kharitonov (a local resident) on a dike on the edge of an artificial water reservoir. The pond and dike were built in 1978 using explosives so the mass has probably been lifted to the surface from a depth of about 2 m[2]. In fall 2004, Kharitonov gave a small sample to A. Ye. Milanovsky who transferred it to the Vernadsky Institute (Moscow) and then proved its meteoritic origin.
[edit] Pallasovka and Peter Pallas
The town of Pallasovka was named after Peter Pallas (1741-1811), a famous naturalist who took part in the discovery and the study of the first pallasite, a type of stony-iron meteorite named after him. Coincidentally, Pallasovka is a pallasite meteorite named after a town named after the discoverer of pallasites.
[edit] Composition and classification
This pallasite consists of approximately equal parts of olivine and metal. Some olivine crystals reach a size of 3 cm. Its composition is similar to the Main Group pallasites, however it is called anomalous because chromites differ in composition both from that of the Main and Eagle Station pallasite groups[2].
[edit] Specimens
The main mass has abundant rusty fusion crust with some regmaglypts and was held by an anonymous purchaser[1].
A 9336 g sample and one polished section are on deposit at Vernad.
[edit] Notes and references
- ^ a b Meteoritical Bulletin Database: Pallasovka
- ^ a b D. A. Sadilenko, S. E. Borisovskiy, A. V. Korochantsev, A. M. Abdrakhimov, M. A. Ivanova, D. I. Zhuravlev. Discovery, Petrography, Mineralogy, and Chemistry of Pallasovka, a New Pallasite from Russia. 37th Lunar and Planetary Science Conference (2006), Abstract #1623
