Title
Chert
Alternative Title
Slightly metamorphosed sandstone
Identifier
GC-12
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.
Modal Abundances:
Quartz (95%)
Matrix (5%)
Both thin section images were taken at a 400x magnification.
Date
no date
Contributor
Western Minerals Inc.
Spatial Coverage
S. side of roadcut 13 mi, E. of Peach Springs, Coconino Co., Ariz.
Temporal Coverage
Mississippian
Accrual Method
Purchased from Western Minerals Inc.
Unit
Redwall Limestone
Number of Thin Sections
1