Rossport Chert
Description of Physical Characteristics:
Color:
Rossport Chert is opaque and black in color
Texture: Fine grain
Luster: Vitreous
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping:
Distribution:
Rossport Chert is associated with the Gunflint Formation, Animikian
Group. Primary sources along Isle Royale in Michigan and Lake
Superior in Ontario.
![](Distributions/Rossport%20Chert.png)
Projectile point made from this material:
Pictures Provided By:
References: (See Reference Page, Entry Number):
Similar Material:
Commonly made projectile point from this material:
Archaeological Context:
Primarily used during the Woodland period on Isle
Royale