Kootenai Argillite
AKA: Kootenay Argillite, Kootenie Argillite
Description of Physical Characteristics:
Color:
Kootenai Argillite ranges from a light green to a light gray,
rarely purplish brown.
Texture: Very fine grain
Luster: Dull to waxy
Translucency: Opaque to slightly translucent
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping: Good flaking quality prone to
step fractures
Distribution:
Distribution Comments:
Kootenai Argillite is associated with the Kootenai Formation of southern
Alberta and into British Columbia, Idaho, and Montana. Primary
outcroppings occur in the Kootenay Lake region of southeastern British
Columbia. This is considered an exotic material.
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:
