Abundances of D, O, and other species towards the Halo Star HD 93521

FUSE spectra of the halo star HD 93521 have been analyzed to determine column densities of D I, O I, N I, Ar I, Fe II, and H₂ in the intermediate velocity cloud (IVC) along the line of sight. Combining these results with those from GHRS and ground-based spectra provides a comprehensive inventory of abundances in the IVC. We find a relatively high value for D/H (17.4 ppm), near solar abundances and low depletions for refractory elements, and a very low molecular fraction.