Granite doesn't "turn into" anything in the sense of a direct transformation like a caterpillar into a butterfly. However, granite can weather and erode over very long periods, breaking down into smaller pieces and eventually forming:

* Sand: The quartz and feldspar crystals in granite can break down into sand grains.

* Clay: Feldspar can chemically alter into clay minerals.

* Soil: The broken-down granite, along with organic matter and other minerals, forms soil.

Granite can also be metamorphosed under intense heat and pressure, transforming into other rocks like:

* Gneiss: A metamorphic rock with a banded appearance.

* Migmatite: A mixed rock with both igneous and metamorphic characteristics.

Important Note: These processes take millions of years. Granite is very durable and resistant to weathering, so it can last for a long time in its original form.