The heat treatment of lithic raw material is a globally dispersed technology that improves the flaking quality of toolstone. While not all types of stone respond to heat treatment, many forms of microcrystalline silicates do, including jasper. Here, we aim to better understand how Perkinsville jasper responds to heat treatment. Perkinsville jasper occurs in the Perkinsville Valley of Yavapai County, Arizona, and was utilized prehistorically by the Prescott, Sinagua, and Hohokam cultures.
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