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Basic information Name: Gruz'ke
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2007
Country: Ukraine
Mass:help 3.42 kg
Meteoritical Bulletin:  MB 108  (2020)  H4
Recommended:  H4    [explanation]

This is 1 of 5993 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)
Comments: Approved 14 Jun 2019
Writeup from MB 108:

Gruz’ke        48°32’N, 32°03’E

Kirovograd, Ukraine

Find: 27 March 2007

Classification: Ordinary chondrite (H4)

History: The meteorite was collected by Kyiv geophisicists P. Nyemensky, Y.Rozanovich, and O.Pakhovchak during a geophysical field expedition. For more than two years the "strange" stone was preserved in Kirovska expedition (Kyiv) as a probable meteorite. In July 2009 a small part of the sample was polished and a section given to NASU for study.

Physical characteristics: The stone is 3423 g, 18.0 × 13.0 × 8.5 cm in size, and fusion crusted. The crust is brown with regmaglypts and with evidences of weathering.

Petrography: (V.P. Semenenko, NASU) The chondrite is composed of a dark-colored lithology with a ordinary chondritic texture. The majority of the chondrules have porphyritic or barred olivine structures. The chondrule glass is slightly devitrified. Major phases are olivine and pyroxene. Minor phases are feldspar, kamacite, taenite, troilite and Ca- pyroxene. Rare grains of chromite, native copper, merrilite, Cl-apatite, ilmenite and silica are present. The sample contains evidences of shock metamorphism. The main of them are the structures of plastic deformations, shock heating and melting. The chondrite is slightly weathered.

Geochemistry: (V.P. Semenenko, A.L. Girich, N.V. Kychan, S.N. Shirinbekova) olivine Fa17.9-19.3 (av. Fa18.6, N=10), low Ca pyroxene Fs15.9-17.4Wo0.93-1.88, (av. Fs16.5Wo1.35, N=28); Ca-rich pyroxene Fs5.94-6.89Wo45.2-46.4, (av. Fs6.31Wo45.7, N=3); feldspar Ab76.2-84.6 Or4.47-9.64 (av.Ab81.9Or6.01, N=11); chromite (wt.% - 3.74 MgO, 6,73 Al2O3, 2.35 TiO2, 0.63 V2O3), kamacite (wt.% - 6.68-8.32 Ni, 0.27- 0.53 Co), taenite (48.5-54.8Ni, 0.02-0.13Co), goethite (9.82NiO, 0.39S).

Classification: H chondrite (H4, S4, W2)

Specimens: The main mass 3227 is located in NASU and 134 in the Committee of Meteorites NAS of Ukraine, Kyiv

Data from:
  Table 0
  Line 0:
Origin or pseudonym:On a surface of ploughed field
Date:27 March 2007
Mass (g):3423
Shock stage:S4
Weathering grade:W2
Fayalite (mol%):18.6 (17.9-19.3, n=10)
Ferrosilite (mol%):16.5 (15.9-17.4, n=28)
Wollastonite (mol%):1.35 (0.93-1.88, n=28)
Classifier:V.P. Semenenko, A.L. Girich, NASU
Type spec mass (g):134
Type spec location:NASU
Main mass:NASU
Finder:P. Nyemensky, Y.Rozanovich, O.Pakhovchak
Comments:Submitted by V.P. Semenenko
   and collections
NASU: National Museum of Natural History of the National Academy of Sciences of Ukraine,st. B. Hmelnitskogo 15, Kyiv - 30, 01030 , Ukraine (institutional address; updated 22 May 2019)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     Recommended::   (48° 32'N, 32° 3'E)

     This is the only approved meteorite from Kirovograd, Ukraine (plus 2 impact craters)
     This is 1 of 45 approved meteorites from Ukraine (plus 7 impact craters)
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