Question

Under most weathering conditions, which mineral component of granites and rhyolites would be most resistant to decomposition?

Answer 1

Granite would be more resistant to decomposition as compared to rhyolite because rhyolite is a fine-grained rock and Granite is a coarse-grained rock.

Granite tends to be more stable to weathering conditions. The major component of quartz, orthoclase, muscovite and biotite are the in order of resistant to decomposition.