Here's why:

* Igneous rocks form from the cooling and solidification of magma (molten rock below the Earth's surface) or lava (molten rock erupted onto the Earth's surface).

* Sodalite is a mineral that crystallizes from magmas, specifically those rich in sodium and aluminum. It is often found in association with other igneous rocks like nepheline syenite.

While some sodalite might be found in sedimentary rocks as a result of weathering and erosion, sodalite itself doesn't form from the processes that create sedimentary rocks.