Koltsovo (H4) – 3.1g


1 in stock


Not so frequent russian meteorite find of 2004. Part slice – 3.1g sold in a collection with label/certificate of authenticity.

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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.

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