Lithic clasts in the Begaa LL3 chondrite

Abstract

White lithic clasts in the Begaa LL3 chondrite are about 3mm in apparent diameter. The major constituents are magnesian olivine, magnesian low-Ca pyroxene, anorthitic plagioclase. The mineralogy of the clast is similar to those of plagioclase-rich inclusions but different in the absence of metal and sulfides. The oxygen compositions of the clasts are essentially identical to the Earth value and homogeneous within the clast. The O-compositions suggest that the clasts have originated from the precursor or in the ambient gas isotopically similar to the Earth.