Piedra de Lumbre Chert
Description of Physical Characteristics:
Color:
Piedra de Lumbre Chert color is most
commonly a yellowish brown to gray but may range from black bright red
or white with dark browns and greens being rare. The most
distinctive attribute is the presence of angular quartz grains within
the matrix.
Texture: Fine grain
Luster: Waxy
Translucency:
Silica Fabrics / Fossils:
Patina:
Heat Treatment:
Knapping:
Distribution:
Distribution Comments:
Piedra de Lumbre Chert only outcrops on a single ridge at the head of
Piedra de Lumbre Canyon on Camp Pendleton in northern San Diego County.
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:
Multiple prehistoric quarries have been located near this source.
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