Xenoblade Chronicles X catex

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I've been wanting to view the graphics from Xenoblade Chronicles X, but they're all stored as .catex files.
Viewing them with a hex editor reveals there's several lines of duplicated bytes and apart from MTXT at the end of the file, there's no file header. There's nothing I can find on these types of files either.

Sample

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I still have no idea how to view these. If anyone would like to help, that would be greatly appreciated.