https://www.usgs.gov/publications/apollo-11-and-12-mare-basalts-and-gabbros-classification-compositional-variations-and
Apollo 11 and 12 mare basalts and gabbros: Classification, compositional variations, and possible...
On the basis of composition, it is possible to distinguish three major groups of Apollo 12 basaltic rocks: olivine-pigeonite basalts and gabbros,...
apollo 11mare basalts12