  We examine the origin of heavy elements in the intracluster medium (ICM) of
galaxy clusters, concentrating upon the roles played by supernovae (SNe) Types
Ia and II. The most accurately determined elemental abundances, Si and Fe,
imply a mild predominance of Type II SNe as the source of ICM Fe, contributing
approximately 60-80% of its total (and approximately 100% of the
alpha-elements). (Currently) intractable uncertainties in measuring X-ray
alpha-element ICM abundances, the initial mass function (IMF), and stellar
evolution ingredients, make a more precise determination of the Ia:II ICM iron
``ratio'' impossible.
