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Río Cuarto 001
Basic information Name: Río Cuarto 001
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: unknown
Country: Argentina
Mass:help 62.7 g
Meteoritical Bulletin:  MB 91  (2007)  Eucrite-pmict
Recommended:  Eucrite    [explanation]

This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 28 Mar 2007
Writeup from MB 91:

Río Cuarto 001                                   32°52.3′′S, 64°13.4 W

Río Cuarto, Cordoba Province, Argentina

Find: 11 October 2000

Achondrite (eucrite, polymict basaltic)

History: A single stone was found in a deflation hollow (formed within a parabolic dune) during an expedition to the Pampean Plain of Argentina by P. A. Bland (ICL), C. R. de Souza Filho (UEdeC), and J. Coniglio (UNdeRC).

Physical characteristics: The 62.7 g meteorite is largely covered with a matte black, slightly weathered fusion crust. Broken surfaces and thin sections are bright gray in color with clasts clearly visible.

Petrography: (J. Levine, UChi; P. A. Bland, ICL) The meteorite consists of larger (up to 1 mm) mineral and lithic clasts set in a fine-grained matrix composed of 10–50 µm size plagioclase and pyroxene fragments. Polycrystalline clasts occur from a variety of sources, reflected in the large range of pyroxene compositions. Areas with fine-grained recrystallized melt are commonly seen. Pigeonite clasts with augite exsolution lamellae are observed. Larger fragments include plagioclase, Ca pyroxene, and basaltic clasts; plagioclase contains pigeonite and troilite inclusions. Accessory minerals, including olivine, troilite, spinel (mostly chromite), ilmenite, metal, and a silica polymorph, have been observed.

Mineral compositions and geochemistry: Plagioclase (An92.9; range An89.7–96.6), orthopyroxene (Fs37.2–77.1Wo0.3–4.8), pigeonite (Fs62.6–85.8Wo5.3–16.6), and augite (Fs35.4–72.6Wo21.3–43.5).

Classification: Achondrite (polymict basaltic eucrite).

Type specimen: 50.67 g is on deposit at UNdeRC. A 5.09 g specimen and polished thin section are on deposit at ICL. Fragments totaling 1.79 g, a polished thin section, and polished epoxy mount are on deposit at UChi.

Data from:
  Table 3
  Line 17:
Mass (g):62.7
Classifier:J. Levine, Uchi; P. A. Bland, ICL
Type spec mass (g):50.7
Type spec location:UNdeRC, ICL, and Uchi
Main mass:U. Messerli. IfP-1
   and collections
UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011)
ICL: Impacts and Astromaterials Research Centre, Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom (institutional address)
Messerli: No contact information provided. (private address)
UEdeC: Universidade Estadual de Campina, Argentina (institutional address)
UNdeRC: Universidad Nacional de Río Cuarto, Argentina (institutional address)
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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     Recommended::   (32° 52' 18"S, 64° 13' 24"W)

     This is 1 of 10 approved meteorites from Cordoba, Argentina (plus 1 impact crater)
     This is 1 of 81 approved meteorites from Argentina (plus 9 unapproved names) (plus 2 impact craters)
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