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| Zag (b) | |||||||||||||||||
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| Basic information | Name: Zag (b) This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: No Year found: 1999 Country: Western Sahara Mass:  300 g | ||||||||||||||||
| Classification history: |
This is 1 of 90 approved meteorites classified as Winonaite. [show all] Search for other: Primitive achondrites, Winonaites | ||||||||||||||||
| Writeup |
Writeup from MB 84:
Zag (b) Morocco Found 1992 Primitive achondrite A well oriented stone weighing 300 g and covered with fusion crust was found by a Moroccan in search of additional pieces from the Zag fall. Classification and mineralogy (B. Zanda, MNHNP, and J. Delaney, Rut): olivine Fa19.4; orthopyroxene, Fs25.7Wo2.3, clinopyroxene, Fs10.5Wo4.9; feldspar, Ab74.6; olivines contain small ( ~ 10 μm) reaction "channels" in which metal (often transformed into sulfide or oxide) is associated with Fs17Wo1 orthopyroxene. Oxygen isotopes (R. Clayton, UChi): δ18O = +4.84‰, δ17O = 2.06‰, which places it within the winonaites field and very close to Divnoe. Specimens: 12.7 g plus thin sections, MNHNP; main mass, 255 g, Radomsky. Zag (a) will now become a recognized synonym for the Zag fall, although use of this name is discouraged. Writeup from MB 85: Zag (b), correction This meteorite was found in 1999. The date listed in MetBull 84 was incorrect.
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| Plots: | O isotopes: | ||||||||||||||||
| Institutions and collections |
MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address) UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011) Radomsky: Walt Radomsky, Rutgers Meteorite Laboratory, Piscataway, NJ 08854, United States (private address; updated 26 Apr 2005) Rut: Department of Geological Sciences, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854, United States (institutional address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000) Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)
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Geography:
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Statistics: This is 1 of 117 approved meteorites from Saguia el Hamra, Western Sahara (plus 1 unapproved name) This is 1 of 286 approved meteorites from Western Sahara (plus 20 unapproved names) | ||||||||||||||||
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