Jasper, Chalcedony, Opal & ???

This rock has characteristics that suggest it could be a type of brecciated jasper or agate. Here are the reasons for this identification:

Texture and Appearance: The rock has a mix of colors, predominantly white with patches of brown, red, and possibly some darker inclusions. This mottled appearance with different colored sections embedded within a matrix is typical of brecciated materials.
Brecciation: The rock appears to have a brecciated texture, where there are fragments of one material (likely agate or jasper) embedded in a matrix of another. This can happen due to geological processes like faulting or intense weathering.
Silica Content: Jasper and agate are both forms of chalcedony, which is a type of silica. The shiny, somewhat translucent appearance of parts of the rock aligns with the properties of chalcedony.
Commonality: Jasper and agate are common and widely found, often appreciated for their decorative qualities due to their color and pattern.

If this rock was found in a specific location known for certain types of rocks, or if you're looking for a more precise identification, details about its origin or taking it to a local geologist or gemologist could provide more accurate information. However, based on the visual characteristics from the image, brecciated jasper or agate seems a likely identification.