189th Post. "Residual nuclei" of jasper (?) N maybe locally pending. The chert, which occurs at special book, and is otherwise was removed from white to yellow and gray, and gray banded varieties before. This residue could have come from Mesolithic contexts and also comes from the northern adjacent parcel of probe 008 (499 South). In the Verwitterungslehmen takes on a variety of chert secondary staining. The Bohnerzhornstein received his bold colors of stored iron oxides. On the Blaubeuren Alb partially raw material sources from the Black Forest are detectable. Examples can be found in older posts. The chert is in "HAHN" described as a harsher variety of jasper.
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