Olivine Ni isotopes of Ni-Cu deposits in northwest China: A potential . . . A set of olivine from sulfide-barren and sulfide-bearing rocks, coupled with numerical modeling, was analyzed to (1) better understand Ni isotopic behavior during key processes in the formation of magmatic Ni-Cu deposits, such as postcumulus re-equilibration (diffusion modification), sulfide segregation, and magma replenishment, and (2
Olivine - an overview | ScienceDirect Topics Introduction Olivine is an important rock-forming mineral and is common in mafic igneous rocks such as peridotite, gabbro, and basalt, along with pyroxene and plagioclase The ultramafic rock dunite consists almost entirely of olivine, and is the result of the fractional crystallization of peridotite-composition melts to form cumulate olivine
Geochemistry of pallasite olivine and the origin of pallasites Olivine is the dominant non-metallic phase and the proto-pallasite mantle was composed of roughly cm-sized olivine with minor chromite formed either as magma-ocean cumulates or restites
Olivine dissolution rates: A critical review - ScienceDirect A survey of the literature suggests that the major factors influencing forsteritic olivine dissolution rates are 1) pH, 2) water activity, 3) temperature, and 4) mineral-fluid interfacial surface area Evidence suggests that the effects of aqueous inorganic and organic species are relatively limited, and may be attributed at least in part to their influence on aqueous solution pH Moreover