Tom / james Knudson wrote: > Hello List, Does ant one know any thing about the meteorite > that was found in Bagdad AZ, like its current location?
Oops, I was too quick :-) Here's part 2: BUCHWALD V.F. (1975) Handbook of Iron Meteorites Volume 2, pp. 292-294, excerpts: History: A mass of 2.2 kg was found in March 1960 by Donald Stout along Burro Creek, 20 km west of Bagdad, Mohave County. It was acquired by Arizona State University and was reported in the Meteoritical Bulletin (# 25, 1962) and by Moore & Tackett (1963). Bunch and Keil (1971) reported the chromite inclusions to be almost stoichiometric FeCr2O4 with very minor contents of MnO, ZnO, Al2O3, V2O3, TiO2 and MgO; these oxides totaled about 0.65 weight%. Collections: Tempe, main mass (1.4 kg) - Copenhagen (38 gr). Description: Bagdad is a well-rounded with a few flat to concave faces, giving the impression of an orange having been packed too tightly with other oranges in a box. Its maximum dimensions are 10.5 x 8.5 x 7 cm, and the weight as recovered was 2.205 g. Most of the fusion crust has spalled off due to terrestrial corrosion, but no severe attack has developed. The meteorite still preserves a smoothly rounded outline, broken only by two shallow regmaglypts on what was probably the rear side during atmospheric entry. Avce and Bushman Land are other small irons with a similar exterior morphology. He meteorite has been opened with four parallel cuts, yielding two endpieces and three slices with a total of 240 cm^2 exposed interior. He etched sections display a medium Widmanst�tten structure of straight, long kamacite lamellae with a width of 1.10�0.10 mm. They also show a beautiful, oriented sheen, which at high magnification is ssen to be due to a marked, crosshatched epsilon-structure ... Bagdad is a shock- hardened medium octahedrite which is related to Kayakent, Augusta County and Cumpas. Chemically it is a typical group IIIA. Fig 296: Section through the mass distinctly showing the heat-affected alpha 2 zone. Internal fissures along the Widmannst�tten grain boundaries are also visible. MOORE C.B. and TACKETT S.L. (1963) The Bagdad, Arizona, iron meteorite (Journal of the Arizona Academy of Scienes 2, p. 191). BUNCH T.E. and KEIL K. (1971) Chromite and ilmenite in non- chondritic meteorites (American Mineralogist 56, pp. 146-157). Cheers, Bernd ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
