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Basic information Name: Fortuna
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1998
Country: Argentina
Mass:help 312 g
Meteoritical Bulletin:  MB 87  (2003)  Winonaite
MetBase:  v. 7.1  (2006)  Winonaite
Recommended:  Winonaite    [explanation]

This is 1 of 85 approved meteorites (plus 1 unapproved name) classified as Winonaite.   [show all]
Search for other: Primitive achondrites, Winonaites
Writeup from MB 87:


Fortuna, Province San Luis, Argentina

Found 1998 May 27

Achondrite (winonaite)

A single 312 g stone of elongated form partly covered by fusion crust was found on 1998 May 27 near the village of Fortuna, Province San Luis, Argentina. Classification and mineralogy (A. Greshake, MNB; M. Kurz, Kurz): the meteorite exhibits an equigranular texture with abundant triple junctions, the average grain size is about 115 µm; it contains low-Ca pyroxene, Ca-pyroxene, olivine, plagioclase, Fe,Ni metal, and troilite with low-Ca pyroxene being the dominant silicate phase. The composition of the silicates is quite reduced: low-Ca pyroxene, Fs5.5–6.7Wo1.1–1.7; Ca-pyroxene, Fs2.4–2.9Wo45.6–46.5; olivine, Fa4.3–5.1; plagioclase, An14.5–16. Fe, Ni metal and troilite veins up to 1.5 mm wide and extending over several cm are prominent; no relict chondrules were found. Oxygen isotope composition (R. Clayton and T. Mayeda, UChi): δ17O = +1.61‰, δ18O = +4.68‰; shock stage S2; degree of weathering W0/1. Specimens: main mass with anonymous finder; type specimen 23 g plus one polished thin section MNB.

Plots: O isotopes:  
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011)
Kurz: M. Kurz, Schillerstrasse 7, D-34626 Neukirchen, Germany (private address)
Search for this meteorite in the Natural History Museum collection (U.K.):   
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References: Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Photos from the Encyclopedia of Meteorites:
Don Edwards   
Mike Farmer   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Dirk Hohmann   
Jay Piatek   
Volker Heinrich   

     Recommended::   (35° 8'S, 65° 22'W)

     This is 1 of 4 approved meteorites from San Luis, Argentina
     This is 1 of 81 approved meteorites from Argentina (plus 9 unapproved names) (plus 2 impact craters)
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