Color: Hogback Chalcedony ranges from light gray to
brown with small lighter colored circles. Mottling may be present
Texture:
Luster:
Translucency:
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping:
Distribution:
Distribution Comments: Hogback Chalcedony primarily occurs on the Dakota Hogback
surrounding Red Valley forming the rim of the Black Hills, South Dakota
and Wyoming.
Projectile point made from this material:
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