Subtype analysis of the SAN JUAN 126, 127, 128 meteorites.

The classification of ordinary chondrites has been a profound field of research that is allowing us to know the most primitive secrets of the origins of our solar system. This is due to the advancement of scientific research. This research reveals that chondritic asteroids, precursors of the rest of the bodies in the solar system, have undergone throughout their geological history, a series of changes or metamorphisms caused, on the one hand, by the increase of heat in the parent bodies, or by aqueous alteration that occurred in their materials. This allows us to divide chondritic materials into petrographic types, depending on the temperature range those materials have experienced. In this paper we analyze the data we obtained from the Chilean meteorites SAN JUAN 126, 127 and 128 that we classified in our laboratory, to discuss their estimated subtypes.