Brandywine Blue Gneiss
AKA: Wilmington Blue Gneiss
Description of Physical Characteristics:
Color:
Brandywine Blue Gneiss ranges from a bright blue to a bluish gray.
Texture: Course to medium grain
Luster: Dull
Translucency:
Opaque
Silica Fabrics / Fossils:
Plagioclase, quartz, orthopyroxene, brown-green hornblend,
magnetite, and ilmenite.
Patina:
Heat Treatment:
Knapping:
Distribution:
Distribution Comments:
Brandywine Blue Gneiss is associated with the Brandywine Blue Gneiss
Formation of the Wilmington Complex of Delaware. Primary
outcroppings occur along the northeast side of Brandy Creek.
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:
