Bisher Chert
 AKA: Highland Chert, Lilley Chert









Natural Form:



Description of Physical Characteristics:

Color:  Bisher Chert ranges in color from a white to yellow including mottled tan and creams and grays.

Texture: Medium to Fine grain

Luster: Porcellaneous

Silica Fabrics / Fossils: Multiple fossils, often referred to as "fossil hash" including sponge spicules, echinoderms, trilobites, and brachiopods.

Patina: Brown

Heat Treatment:  Produces pink or mauve colors.

Knapping: 


 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Primary Source Distribution:
Distribution Comments:

Bisher Chert is associated with the Bisher Dolomite formation, Lilley and West Union Members and has primary sources in Liberty, Highland, and Adams Counties, Ohio

 

Projectile point made from this material:



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References: (See Reference Page, Entry Number):

Similar Material:
Commonly made projectile point from this material:

NAME: Vanport. SYNONYM: Flint Ridge, Nethers, Plum Run. Raccoon Creek, Ribbon Flint. TYPE: Chert. DISTRIBUTION: Columbiana, Coshocton, Hocking, Holmes, Jackson, Lawrence, Licking, Mahoning, Muskingum, Perry. Scioto, Stark, Tuscarawas, Vinton, and Wayne Counties. STRATIGRAPHY: Pennsylvanian System, Pottsville Group, Vanport Formation. COLOR: Multicolors. COMMENTS: Flint Ridge Vanport chert is the state stone of Ohio.
Archaeological Context:

Bisher Chert saw it's highest usage in the Late Archaic period.  Was used heavily by the Adena culture.