A "Mexican Tile" is a type of terra cotta (terracotta) tile, however, it has its own unique characteristics that requires this special page. There is another page for Terracotta tile and you might want to review that page also. That page is specific for the non-Mexico made terracotta tile (from Brazil, France, etc.) and those also have different and specific requirements.
True "Mexican Tile" is hand made and fired at relatively low temperatures. Therefore, they are not flat or perfectly square. There might even be animal tracks in the surface.
The colors vary considerably from beiges, yellows, and oranges as you can see in the second tile above. All these names are treated in the same manner: "Mexican Tile", "Saltillo Tile", "Tecate Tile". However, if a tile has been sealed by the supplier - it is a different tile. See the "Factory Sealed Surfaces" page instead.
"Talavera Tile" are a type of Mexican Tile that has a multi-color kiln fired glazed applied in a decorative pattern. This glaze puts it into a different "care" catagory - that is "Glazed Tile".
"Mission Tile" is a cement product and is discussed on the " Concrete Tile" page.