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Tezontle (Spanish: tezontle) is a porous, highly oxidized, volcanic rock used extensively in construction in Mexico. It is usually reddish in color due to iron oxide.[1] Tezontle is a well-cemented, agglomeritic and scoriaceous rock.[2]


Tezontle can be mixed with concrete to form lightweight concrete blocks,[3] or mixed with cement to create stucco finishes.[1] Tezontle is often used as the top layer of gravel on unpaved roads in Mexico. Many colonial buildings in Mexico use the reddish cut tezontle on their facades.



  1. ^ a b "Tezontle" (in Spanish). Retrieved 2009-01-04.
  2. ^ Segerstrom, K. (1962) Geology of South-central Hidalgo and Northeastern Mexico, USGS Bulletin 1104-C, page 124.
  3. ^ "Tezontle aggregate substitute optimization in building blocks mixture". IEEE. September 2007. Retrieved 2009-01-04.