Abstract

The Mono de La Mina meteorite was found in 1986 in the Atacama Desert, western Chile, presumably in its place of fall. Thin and polished sections were studied under optical microscopy in-plane polarízed transmitted and reflected light, scanning electron microscopy (SEM/EDS) with dot mapping image and light contrast backscattering electron images, and electron microprobe. This meteorite presents a chondritic structure with a variety of chondrules embedded in a fine-grained matrix. The internal textile of the chondrules corresponds un the most common ones as barred divine, radial pyroxene, granular olivine-pyroxene,. and porphyritic olivine- pyroxene; polysomatic barred olivine, recrystallize annealed olivine and also pyroxene chondrules. Correspond m those of an H5, weakly shocked, S3 chondrite.