L-1474 (Upper Mercer Chert): Direct collection from outcrop. Provenience includes bedrock. Not a collection from archaeological context. Known collection procedure. Collection includes raw material, ...
Moline Chert, also known as Spoon, or Rock Island, is a light gray to very dark gray chert. It may have bluish tints, become off-white, become stained orange to red by iron oxides, or have banded blue ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results