Final answer:
Hydrolysis leads to minerals taking up more volume due to the breakdown of the original mineral and formation of new minerals that occupy more space.
Step-by-step explanation:
Invariably, hydrolysis makes a mineral take up more volume. This happens because when minerals undergo hydrolysis, they react with water which often leads to the breakdown of the mineral and the formation of new minerals that occupy more space. For example, feldspar can be converted to clay minerals through hydrolysis, with the resultant clay taking up more volume than the original feldspar mineral.