Northwest Africa 1756

Morocco

Found 2002

Ordinary chondrite (LL3.0/3.2)

A 68.2 g meteorite was purchased in Safsaf, October, 2002. Classification and mineralogy (T. Bunch and J. Wittke, NAU): monomict chondritic breccia; chondrules are very similar to equivalent chondrules in the LL3.0 Semarkona chondrite in terms of phase/mesostasis compositions, zoning profiles, and textures. Type IA olivine: FeO = 0.21 to 1.94 wt%; CaO = 0.31 to 0.51 wt%. Type IIA olivine: FeO = 11.8 to 15.9 wt%; CaO = 0.10 to 0.19 wt%; P₂O₅ = 0.09 to 0.36 wt%; Chondrule mesostasis is optically isotropic. Matrix metal is Ni-rich (50 to 60 wt%) and occurs in metal-pyrrhotite-haxonite ± magnetite, chromite, carbon, cohenite, 0.1 to 0.2 mm aggregates; metal contains small (<1 µm) SiO₂-rich inclusions. Shock level, S1; one xenolith is S4; weathering grade, W1/W2. Specimens: type specimen, 12.5 g and 2 thin sections, NAU; main mass, xHupé.