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| Fortuna | |||||||||||||||||
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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:  312 g | ||||||||||||||||
| Classification history: |
This is 1 of 87 approved meteorites classified as Winonaite. [show all] Search for other: Primitive achondrites, Winonaites | ||||||||||||||||
| Writeup |
Writeup from MB 87:
Fortuna 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: | ||||||||||||||||
| Institutions 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) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Geography:
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Statistics: 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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