Olivine chemistry from Cameroon: evidence of carbonate metasomatism along the ocean-continental boundary of the Cameroon volcanic line

We report olivine chemistry in basaltic rocks from the Mt. Cameroon Volcanic area, which is used as a proxy to understand mantle and early igneous processes along the ocean-continent segment of the Cameroon Volcanic Line. Most primitive olivine phenocrysts in this study have forsterite contents of 86–87.5%. Their Li concentrations are below 3.5 ppm and occur in similar concentrations in all the samples. Ni has a large range in concentration,...