Color:
Norwood chert is opaque and ranges in color from a light to medium gray.
Darker or lighter banding is commonly present.
May have darker gray patches present.
The outer cortex is a chalky white.
Texture: Medium to fine grain
Luster: Dull to satin like luster
Silica Fabrics / Fossils:
Patina: The patina is a brownish color.
Heat Treatment: Heat treatment deepens
color and increases the luster.
Knapping:
Distribution:
Distribution Comments:
Norwood Chert is associated with the Petoskey Formation in Charlevoix
County, Michigan.
Primary outcroppings are in the L'Arbre Croche area on the west side of
Michigan lower peninsula.
Projectile point made from this material:
Heat Treated
Pictures Provided By:
Douglas Holliday
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