“ ...The  Comanche Trail jasper is designated in the USA also as “ Comanche Trail Agate" even it shows however only few agate structures. Many Ruin-jaspers world-wide show similar structures. The most similar to Comanche Trail jasper are the jaspers from California or Sicily, since they show a typical ruin structure of jasper embedded into blue to light blue masses o chalcedony.  The Comanche Trail is situated in close proximity to Amarillo...”

written by M. Siegeris, Tübingen