Answer:
Feldspar-clay
Quartz- No chemical change
Olivine- Limonite
Explanation:
When chemically weathered, some of the original minerals of granite change into different minerals.
Feldspar, for example, tends to hydrate and transform into a clay mineral.
Iron-rich minerals, like olivine, turn into limonite by chemical weathering. Quartz is considerably resistant to chemical weathering, so it´s the least susceptible to the chemical change.