Ironstone banding!

This rock has a mix of colors and textures that suggest it could be a type of metamorphic or sedimentary rock with mineral inclusions. Here are a few possibilities:

Banded Iron Formation (BIF): Given the banding and the mix of iron-rich (darker) and silica-rich (lighter) layers, this could be a piece of a banded iron formation. BIFs are characterized by alternating layers of iron oxides and chert, which might match the appearance here with the orange and brown hues indicating iron content.
Jasper or Ironstone: The rock's coloration with reds, oranges, and browns might indicate the presence of iron oxides, which are common in jasper or ironstone. Jasper can have similar banding but is usually more solid in color, whereas ironstone might have more varied textures and less distinct banding.
Metamorphic Rock with Iron: If the rock has undergone metamorphism, it could be a type of schist or gneiss with iron-rich minerals like hematite or magnetite. The banding could be due to the alignment of these minerals during the metamorphic process.

Given the banding and the color contrast, a banded iron formation seems like a strong candidate.