Description
Collected from the Redwall Formation, this is a highly silicious sample defined in the suite's documentation as chert, but the sample lacks the nano-crystalline appearance of a traditional chert. It appears to be more of a slightly metamorphosed quartzose sandstone.
Modal Abundances:
Quartz (95%)
Matrix (5%)
Both thin section images were taken at a 400x magnification.
Spatial Coverage
S. side of roadcut 13 mi, E. of Peach Springs, Coconino Co., Ariz.