Color:
Nantasket Argillite is a dark gray to black on freshly fractures
surfaces weathering to a tan to pale green or green and may have pale
banding present.
Texture:
Luster:
Translucency:
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping:
Distribution:
Distribution Comments:
Nantasket Argillite outcrops in the Boston region. Formation not
provided, but in this area both Braintree Argillite (black) and
Cambridge Agrillite (green) occur. This could be an AKA for
Braintree Agrillite.
Projectile point made from this material:
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