Archeology
Lithic Comparative Collection

Archean Banded Iron

Argentine Chert

Battle Mountain Quartzite

Bethany Falls A Chert

Bethany Falls Chert

Blue River Agate

Blue Springs Chert

Blue Springs Vicinity

Burlington Chert

Burlington Chert

Burlington Chert

Burlington Chert

Burlington Chert

Chadron Cobbles

Chadron Formation Basal Conglomeration Silicified Wood

Chadron Formation Chalcedony

Chalcedony

Chouteau Chert

Cochrane Chert

Cottonwood Chert
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