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Koltsovo
Basic information Name: Koltsovo
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2004
Country: Russia
Mass:help 20.02 kg
Classification
  history:
Meteoritical Bulletin:  MB 89  (2005)  H4
MetBase:  v. 7.1  (2006)  H4
Recommended:  H4    [explanation]

This is 1 of 6371 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from MB 89:

Koltsovo

Kaluga district, Russia

Found 2004, July

Ordinary chondrite (H4)

One stone weighing 20.02 kg was found by Svetlana Murashova and Stanislav Murashov while collecting mushrooms 2 km SSW of the Koltsovo village. The stone occurred at the edge of a ploughed field and was probably removed there during agriculture works. No other meteorite fragments were found in the field by Dr. Andrei .Stanyukovich of Moscow. Classification and mineralogy (M.Nazarov, Vernad): chondrules of different types and their fragments are well defined; olivine, Fa20.0, PMD 2.7%; pyroxene shows variable composition, Fs5-24Wo0.2-7.2, the mean, Fs12.9Wo1.2; shock stage S1; weathering grade W1. Specimens: 2034 g and a thin section, Vernad; main mass with the finders.

Data from:
  MB89
  Table 8
  Line 4:
State/Prov/County:Kaluga District
Date:Jul 2004
Latitude:54°45.03'N
Longitude:36°58.68'E
Mass (g):20.02 kg
Pieces:1
Class:H4
Shock stage:S1
Weathering grade:W1
Fayalite (mol%):20
Ferrosilite (mol%):5-24
Wollastonite (mol%):0.2-7.2
Classifier:M. Nazarov, Vernad
Type spec mass (g):2034
Main mass:S. Murashova and S. Murashov
Institutions
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev - SV-meteorites      
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Alan Mazur   
ale bartolommei-giulio M.   
AR Photo added 19 Apr 2022
David L. Ribeca Photo added 19 Apr 2022
Photo added 19 Apr 2022
Franco Vignato Photo added 19 Apr 2022
Gerald Armstrong Photo added 19 Apr 2022
Jim K   
Michael S. Scherman Photo added 19 Apr 2022
Michel Girard   
Nuno Chaves Photo added 19 Apr 2022
Photo added 19 Apr 2022
Predrag Radovic   
Robert Zdancewicz Photo added 19 Apr 2022
Ryan Upchurch   
Suzanne De Paula Photo added 19 Apr 2022
Woreczko Jan & Wadi      
xeqtr Photo added 19 Apr 2022
Ziyao Wang      
Geography:

Russia
Coordinates:
     Recommended::   (54° 45' 2"N, 36° 58' 41"E)

Statistics:
     This is 1 of 3 approved meteorites from Kaluzhskaya oblast', Russia (plus 1 impact crater)
     This is 1 of 151 approved meteorites from Russia (plus 5 unapproved names) (plus 19 impact craters)
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