propylization

propylization

[‚prō·pəl·ə′zā·shən]
(petrology)
A hydrothermal process by which propylite is formed from andesite by the introduction of or replacement by an assemblage of minerals.
References in periodicals archive ?
Silicification and propylization are the most common and pervasive alterations observed in the ground mass of the volcanic rocks.