NWA 13643 - carbonaceous chondrite CM2 - iVesmir.cz

A carbonaceous chondrite of type CM2 with the designation NWA 13643 was purchased in Morocco in 2020.It was a multiple small dark grey to black specimen without fused crust. Petrographically, the meteorite is composed of small (apparent diameter of about 250 μm) chondrules, chondrule pseudomorphs, mineral fragments and rare CAI, many of which are surrounded by fine-grained dusty rims set in an abundant fine-grained matrix. The matrix is Fe-rich with abundant Fe-sulphides and rare Ca-carbonates. Low analytical matrix analysis totals indicate the presence of hydrous phyllosilicates.