With the addition of water, the minerals in granite rocks chemically weather into other minerals, known as products. Test your knowledge of the by-product of each mineral as a result of chemical weathering by labeling the minerals below with their respective products.

1. Feldspar
Clay, no chemical change, or limonite?

2. Quartz
Clay, no chemical change, or limonite?

3.Olivine
Clay, no chemical change, or limonite?

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.

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