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Highly siderophile element abundances and 182W/184W and 187Os/188Os were determined for a suite of Mauna Kea lavas from the Hawaiian Scientific Drilling Project phase 2 drill core. The new analyses, combined with previous measurements, compose the largest database for μ182W (the parts-per-million deviation of 182W/184W from a terrestrial standard) for a single volcano (n = 16). Although most lavas analyzed are characterized by negative μ182W values, lavas with values similar to the modern bulk silicate Earth are found throughout the entire stratigraphic column. This suggests that components with normal μ182W are collocated with components that host μ182W deficits in the plume. Negative μ182W values are associated with elevated 3He/4He, as well as elevated Ti and Nb. These correlations may link μ182W anomalies to ancient deep mantle crystal-liquid fractionation processes. Consistent with previously measured 3He/4He (R/RA) in the drill core, the magnitude of negative μ182W values was greatest when Mauna Kea was close to the plume axis then generally decreased over the ~400 kyr captured by the stratigraphic section. The component with anomalous μ182W was either concentrated near the plume axis, or was more effectively sampled by melting near the plume axis where the temperature excess was greatest, suggesting it was less fusible than the dominant plume components. The process leading to the generation of a mantle component with a negative μ182W anomaly could either be related to some form of core-mantle isotopic equilibration, or early-Earth fractionation within the silicate Earth. At present each possibility remains viable.more » « lessFree, publicly-accessible full text available August 1, 2025