propylitization
/ˌprɒpɪlɪtʌɪˈzeɪʃn/(also propylitisation) Geology
noun
The hydrothermal alteration of an igneous rock to propylite, especially around an ore body; an instance of this.
Origin
Early 20th century; earliest use found in Archibald Geikie (1835–1924), geologist and historian. From propylite + -ization.