Kainsaz meteorite

Fifteen pieces of the Kainsaz meteorite were seen to fall near Kainsaz, Muslyumovo, Tatarstan on September 13, 1937.[1] The largest weighed 102.5 kilograms (226 lb), the total weight was ~200 kilograms (440 lb).[2][3] As of January 2013 pieces were on sale for ~US$100/g.[2] Kainsaz is the only observed fall in Tatarstan.[3]

Kainsaz
TypeChondrite
ClassCarbonaceous chondrite
ClanCM-CO
GroupCO3.2
Subgroup3
Shock stage2
CountryRussia
RegionKainsaz, Muslyumovo, Tatarstan
Coordinates55°26′N 53°15′E
Observed fallYes
Fall date1937-09-13
TKW200 kilograms (440 lb)
Strewn fieldYes
This partial slice has fusion crust along 2 edges and weighs 4.04 grams (0.143 oz).
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History

A fireball was observed which left a dust train and broke into fragments during flight in a series of detonations that were heard up to 130 kilometres (81 mi) away.[1] The strewn field of 40 by 7 kilometres (24.9 mi × 4.3 mi) was oriented SE-NW with the largest stone falling at the NW end,[1] the smallest (the size of a nut) near the village of Kosteevo at the SE end.[1]

Mineralogy

Most of the chondrules (90 %) are either droplet (39 %) or lithic (61 %). The remaining 10 % are barred olivine, radial pyroxene, cryptocrystalline, glassy, sulfide-metal, micro-poikilitic and complex chondrules.[4]

Classification

Kainsaz is classified as a CO3.2. This stands for CO group, petrologic type = 3, and subtype = 2. The group is part of the CM-CO clan and a member of the carbonaceous chondrites.[3]

See also

References
  1. Millman, P. M. (Oct–Dec 1938). "News from the Soviet Union Concerning Meteoric Research". Journal of the Royal Astronomical Society of Canada. 33: 51. Retrieved 11 January 2013.
  2. "Kainsaz CO3.2 Carbonaceous Chondrite Meteorites for Sale". The Meteorite Market. Retrieved 11 January 2013.
  3. "Kainsaz". Meteoritical Bulletin Database. Meteoritical Society. Retrieved 11 January 2013.
  4. Stakheeva, S. A. "Chondrules in the Kainsaz CO chondrite" (PDF). Retrieved 12 January 2013.
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