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Benešov (b)
Basic information Name: Benešov (b)
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2011
Country: Czech Republic
Mass:help 1.54 g
Meteoritical Bulletin:  MB 100  (2012)  H5
Recommended:  H5    [explanation]

This is 1 of 11238 approved meteorites (plus 22 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 17 Feb 2012
Writeup from MB 100:

Benešov (b)        49°46’N, 14°38’E

Stredocesky, Czech Republic

Found: 9 Apr 2011; possibly fell 7 May 1991

Classification: Ordinary chondrite (H5)

History: A small stone found along with Benešov (a) in the predicted impact area for the bright fireball recorded on May 7, 1991 (described in detail for Benešov (a)).

Physical characteristics: One specimen with a total mass 1.54 g. Highly weathered, irregular in form and lacking fusion crust. When recovered, it was indistinguishable from terrestrial stones and slag found in the field.

Petrography: (Jakub Haloda, PCU) Chondrules indistinct showing significant recrystallization. Weathering grade W3. Shock features consistent with S3.

Geochemistry: Minerals exhibit equilibrated chemical compositions. Olivine Fa17.8-20.2, with an average value of Fa19.1, (n=42); low-Ca pyroxene Fs15.7-18.7Wo0.7-1.5, with average of Fs17.1; Plagioclase (Ab77-86, An12-19, grain size 6-40 μm) is usually associated with high-Ca pyroxene (Fs6.2-9Wo44.2-46.5).

Classification: H5

Specimens: Specimen: 1.54 g, CzAS

Data from:
  Table 1
  Line 30:
Origin or pseudonym:Field
Date:9 Apr 2011
Mass (g):1.54
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):19.1
Ferrosilite (mol%):17.1
Wollastonite (mol%):1.0
Classifier:Jakub Haloda, PCU
Type spec mass (g):1.5
Type spec location:CzAS
Main mass:CzAS
Finder:P. Spurny, A. Spurna
Comments:Submitted by Pavel Spurny
   and collections
PCU: Charles University, Faculty of Science, Institute for Cheochemistry, Mineralogy and Mineral Resources, Albertov 6, 128 43 Prague 2, Czech Republic (institutional address; updated 3 Mar 2011)
CzAS: Astronomical Institute CAS, Fricova 298, 251 65 Ondrejov, Czech Republic, Czech Republic (institutional address; updated 1 Apr 2015)
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Czech Republic
     Recommended::   (49° 46'N, 14° 38'E)

     This is 1 of 6 approved meteorites from Stredocesky, Czech Republic
     This is 1 of 26 approved meteorites from Czech Republic (plus 1 unapproved name)
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