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Sahara 03500
Basic information Name: Sahara 03500
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2003
Country: (Sahara)
Mass:help 221 g
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  Achondrite-ung
MetBase:  v. 7.1  (2006)  Achondrite-ung
Recommended:  Achondrite-ung    [explanation]

This is 1 of 95 approved meteorites classified as Achondrite-ung.   [show all]
Search for other: Achondrites, Ungrouped achondrites
Writeuphelp
Writeup from MB 88:

Sahara 03500

Found 2003 May

Achondrite (ungrouped)

In May 2003, a dark 221.33 g stone was discovered in the Sahara by a person prospecting for meteorites, acting on behalf of Caillou Noir. The rock is light gray-green, fine-grained, and displays dark globules of a few mm to cm with rusty rims. Cracked fusion crust (dark greenish brown) and a deep regmaglyt on one side, broken on the other side with desert alteration.  Petrography and mineralogy (A. Jambon and O Boudouma, UPVI; and B. Devouard, UBP):  Magmatic texture of orthopyroxene and olivine with interstitial glass. A few rounded metal-sulfide globules (~16% vol.), 0.5-10 mm, are dispersed in this silicate "matrix". Glomerocrysts of pyroxene ~50-300 µm, En77Fs20Wo3, FeO/MnO = 27.8±0.4.. Fine rims of clinopyroxene (En50Fs14Wo36) where in contact with the glass phase. Slightly zoned olivine, 20-50 µm, Fo81 to Fo76, FeO/MnO = 45.5 ±0.6. Interstitial glass (c. 15 % vol.) close to feldspathic composition (c. Ab17An4Or13Qz65). Very minor Fe sulfide grains (<5 µm) in the glass phase or between crystals. Metal-sulfide globules consist of dendritic metal in pyrrhotite (coarse texture, visible with the naked eye). Metal grains have discontinuous rims of Fe-Ni phosphide, and display a fine-grained texture with irregular exsolutions of taenite.  Smaller globules  (<500 μm; Fe= 89 %, Ni=9-10 %, P= 0.5-1.5 %) consist of kamacite  with phosphide and taenite exsolution, surrounded by pyrrhotite. The rock is highly fractured, with secondary veins of Ca-carbonate of probable terrestrial origin. Minor oxydation is visible around the metal-sulfide globules (W1). Specimens: type specimens: UPVI 21.36 g, Université de Clermont III: 2.0 g; main mass: Caillou Noir.

Data from:
  MB88
  Table 1
  Line 13:
Mass (g):221.3
Pieces:1
Class:Achanom
Fayalite (mol%):-
Ferrosilite (mol%):-
Classifier:A. Jambon and O. Boudouma, UPVI, and B. Devouard, UBP
Type spec mass (g):23.36
Type spec location:21.36g, UPVI and 2.0g UBP
Main mass:MFranco, Caillou Noir
Finder:MFranco, Caillou Noir
Comments:See separate entry
Institutions
   and collections
UPVI: Université Pierre et Marie Curie (Paris VI),Case 110, 4 Place Jussieu, 75005 Paris, France (institutional address; updated 5 Oct 2014)
Caillou Noir: Caillou Noir 100 Chemin des Campenes, 74400 Chamonix, France; Website (private address)
MFranco: Michel Franco (of Caillou Noir), 100 Chemin des Campenes 74400 Les Praz de Chamonix, France; Website (private address)
UBP: Universite Blaise Pascal, Clermont-Ferrand, France (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Michel Franco         
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Wang Ziyao         
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 1036 approved meteorites from (Sahara) (plus 1 unapproved name)

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