A New Component of the Mezö-Madaras Breccia: A Microchondrule- and Carbon-Bearing L-Related Chondrite

Abstract— Microchondrules with apparent diameters of 2 to 150 μm are found in a black carbon—bearing inclusion in Mezö-Madaras. Some are homogeneous (glassy or micro-crystalline) others show two phases: mainly silica and a pyroxene-rich glass. The bulk chemical composition of the inclusion is related to the host-chondrite in which silica-pyroxene chondrules are ubiquitous. Small black lumps of the same kind are dispersed in bulk Mezö-Madaras. This L-related carbon-bearing material may represent a new specimen of C-rich ordinary chondrite.