What do you think is the reason it takes a very ling time for granite to break down?

Granite takes a long time to break down primarily due to its composition and structure. It is an igneous rock made up of tightly interlocking minerals like quartz, feldspar, and mica, which are highly resistant to weathering and erosion. Additionally, the slow chemical weathering processes, such as hydrolysis and oxidation, are less effective on granite compared to softer, more reactive rocks. This durability allows granite to persist in the landscape for thousands to millions of years.