Mdaouer        29°54.56’N, 6°55.31’W

Guelmime-Es-Semara, Morocco

Purchased: 2014 May 4

Classification: Carbonaceous chondrite (CO3.0)

History: Found and purchased from the finder in the Foum Zguid region of Morocco, May 4, 2014.

Physical characteristics: Many dark fragments, some with dull fusion crust.

Petrography: Chondrules and chondrule fragments in an abundant fine-grained foliated Fe-rich matrix. Abundances (by point counting, N=236): matrix 62 vol%, chondrules and fragments 38 vol%. Average chondrule apparent size 130±90 μm (N=35). Sulfide/magnetite and sulfide/metal assemblages are found in the matrix and chondrules as 100 μm blebs and as abundant μm-sized grains in the matrix.

Geochemistry: Olivine Fa_17.3±19.2 (Fa_0.4-61.8, PMD=112%, N=33). Cr₂O₃ in ferroan olivine is 0.40±0.15 wt% (N=28). Orthopyroxene Fs_3.1±2.3Wo_2.0±1.2 (N=10). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.32.

Classification: CO3.0, sub-type from Cr₂O₃ content of ferroan olivine and olivine Fa range. Minor weathering.

Specimens: 15.3 g at CEREGE. Main mass with P. Thomas.