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NWA 6258 (24.94 gram)

2 250 $

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[ Meteoritical Bulletin Database ]


Classification: Chondrite EL-melt rock S4/W1
Place/Time: 11.2008 in Morocco
Mass: 1088g

History: Purchased by Marcin Cimala in May 2009 from a Moroccan dealer.
Physical characteristics: A group of dark brown, dense stones comprising two larger pieces and many small fragments (total 1088 g). Fresh interiors are black with abundant, anastomosing metal and sulfide grains.
Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of clasts rich in irregular, elongated grains of metal and sulfides with associated Fe-poor silicates. Minerals are forsterite, enstatite, diopside, albite, Si-poor kamacite, troilite, taenite, schreibersite, and daubreelite.
Geochemistry: Forsterite (Fa0.9), enstatite (Fs1.5-1.8Wo1.4-1.2), diopside (Fs0.7-2.3Wo45.9-44.6).
Specimens: A total of 36 g of type material and one polished thin section are on deposit at UWB. The remaining material is held jointly by Mr. M. Cimala and Mr. T. Jakubowski.