Data tables of mineral and bulk-rock chemistry for rocks from Aitutaki and Rarotonga Islands, Cook Islands

Presented data include mineral compositions of a lherzolite xenolith (named AI70) with bulk major-element compositions and Sr-Nd-Pb isotope compositions of alkali basalts from Aitutaki and Rarotonga Islands, Cook Islands. The data provide an outlook for mantle heterogeneity in terms of mineral chemistry and Sr-Nd-Pb isotope geochemistry. Analytical methods are provided herein.