  We report the electronic properties of the cubic laves phase superconductor
CaIr2 (Tc = 5.8 K), in which the Ir atoms have a Pyrochlore lattice. The
estimated superconducting parameters obtained from magnetization and specific
heat measurements indicate that CaIr2 is a weakly coupled BCS superconductor.
Electronic band structure calculations show that the Ir d-states are dominant
at the Fermi level, creating a complex Fermi surface that is impacted
substantially by spin orbit coupling.
