Color: Rainy
Butte Chert ranges from a dark reddish brown to a dark chocolate brown
with yellowish streaking, containing fossilized wood
with banding or growth rings being present.
Texture:
Luster: Earthy to waxy
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping:
Distribution:
Distribution Comments:
Rainy Butte Chert is associated with the Sentinel Butte formation and is found through out northwestern North Dakota and
into South Dakota and Montana. Primary outcroppings are located in
eastern Slope County and Billings County.
Projectile point made from this material:
Pictures Provided By:
Do you see information that is incorrect on this
page, or do you have information that should be added? If so, please:
