Comaroff and Comaroff, 1999
The deployment of magical means for material ends or, more expansively, the conjuring of wealth by resort to inherently mysterious techniques, whose principles of operation are neither transparent nor explicable in conventional terms.
Comaroff, Jean, and John L. Comaroff. "Occult economies and the violence of abstraction: notes from the South African postcolony." American ethnologist 26.2 1999:297