Loyalhanna Chert
AKA: St. Xavier Chert, Seger Chert, Benwood Chert, Latrob Chert










Natural Form:



Description of Physical Characteristics:

Color: Loyalhanna chert ranges in color from a chalky white, light gray, or light green to greenish brown
Texture: Medium grain

Luster: Dull to waxy

Silica Fabrics / Fossils:  Fossiliferous

Patina: White to brown

Heat Treatment: 

Knapping: 
 

 

 

 

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Distribution:
Distribution Comments:

Loyalhanna Chert is associated with the Loyalhanna Limestone Formation of the Maxwell Group of Pennsylvania and West Virginia.  Primary outcroppings occur along the Loyalhanna Creek, Conemaugh River and Youghiogheny River in southwestern Pennsylvania, Cemetery Hill, Derry, and near St. Xavier in Westmoreland County, Pennsylvania.

 

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:
Archaeological Context:
widely used chert in upland Westmoreland County, Pennsylvania