Broad Run Chalcedony
AKA: Wissahickson Schist
Description of Physical Characteristics:
Color: Broad
Run Chalcedony ranges in color from a mottled white to light gray,
cream to yellow, or a light yellowish brown to brown. Black specks are present through the material.
Texture: Fine grain
Luster: Waxy to vitreous
Translucency: Opaque to slightly translucent
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping:
Distribution:
Distribution Comments:
Broad Run Chalcedony is associated with the Wissahickon Formation of
eastern Maryland into northern Delaware and southeastern Pennsylvania.
Primary outcroppings are located near Landenberg Pennsylvania.
This is part of the Delaware Chalcedony Complex.
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:
