L-14 (Little Colorado River Chert/Quartzite/Petrified Wood/Chalcedony/Agate): Not direct collection from outcrop. Provenience includes samples from gravel deposits. Unknown collection procedure.
L-23 (Little Colorado River Gravel Chert, Petrified Wood, Agate, Chalcedony): Not a direct collection from outcrop; Provenience includes samples from gravel deposits; Collection includes raw material, ...
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