  In this article, we provide theoretical support for the use of geometric
measures of nonclassicality as a general tool to identify quantum phase
transitions. We argue that divergences in the susceptibility of any geometric
measure of nonclassicality are sufficient conditions to identify phase
transitions at arbitrary temperature. This establishes that geometric measures
of nonclassicality, in any quantum resource theory, are generic tools to
investigate phase transitions in quantum systems. At zero temperature, we show
that geometric measures of quantum coherence are especially useful for
identifying first order quantum phase transitions, and can be a particularly
robust alternative to other approaches employing measures of quantum
correlations.
