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NGC 2419 is a massive outer halo Galactic globular cluster whose stars havepreviously been shown to have somewhat peculiar abundance patterns. We haveobserved seven luminous giants that are members of NGC 2419 with Keck/HIRES atreasonable SNR. One of these giants is very peculiar, with an extremely low[Mg/Fe] and high [K/Fe] but normal abundances of most other elements. Theabundance pattern does not match the nucleosynthetic yields of any supernovamodel. The other six stars show abundance ratios typical of inner halo Galacticglobular clusters, represented here by a sample of giants in the nearbyglobular cluster M30. Although our measurements show that NGC 2419 is unusualin some respects, its bulk properties do not provide compelling evidence for adifference between inner and outer halo globular clusters.

The Peculiar Chemical Inventory of NGC 2419 -- An Extreme Outer Halo "Globular Cluster"