/sci/ - Science & Math

>>10316368
Apollo samples have a chemistry that can be matched fairly closely with terrestrial basalts and eucrites, a basaltic meteorite [fig-2]. The same is true for the mineralogy:

“The minerals found in JSC-1 (lunar regolith simulant), plagioclase, pyroxene, olivine, ilmenite, and chromite, are also characteristic of many lunar basalts and mare soils. The compositional ranges of these lunar minerals generally overlap the ranges of their terrestrial counterparts.”

Apollo samples and earth rocks have oxygen18 to oxygen17 ratios of around 5:3 per mil. Although Eucrites are generally slightly less than this, there have been exceptions in which their oxygen isotope ratios are the same as earth - 'DaG 872' being a good example.