This specimen is a piece of rough Picture Jasper (specifically matching variants like Owyhee or Cripple Creek jasper), which also shows distinct features of a prehistoric chipped stone tool like a scraper or a side-blade core. [1, 2, 3]Geological CompositionMaterial: It is an opaque, microcrystalline variety of quartz known as jasper or high-silica banded chert.Appearance: It features characteristic swirling ribbons of mustard yellow, tan, and dark gray-brown iron oxide inclusions, typical of landscape and picture jaspers found across North America. [1, 2, 3]Archaeological FeaturesFlintknapping Evidence: The rock has a notable flat planar face with scallop-shaped fracture scars along the edges. These are flake scars created by intentional percussion or pressure flaking. [1, 2, 3, 4]Tool Classification: The tapered, worked edge along the bottom and sides suggests it was utilized as a side scraper or portable cutting tool used by early humans for tasks like processing animal hides or carving wood measures 5.5 in x 3.5 in x 1.5 in

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