A microscopic and electron microprobe study of the Sete Lagoas chondrite shows that based on the compositions of olivine (Fa19.4), orthopyroxene (Fs17.1), and chromite, the chondrite belongs to the H-group. A well-developed chondritic texture, combined with slight variations in the compositions of ferromagnesian minerals, as well as the presence of glassy material (particularly in chondrules), suggest that the meteorite belongs to the petrologic class H4.
