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Presley Wash Obsidian

presleywash.jpg Partridge Creek ObsidianThumbnailsAwatobi (Awatovi Polychrome)

Description: Presley Wash obsidian is actually a sub-vitreous rhyolite ranging from black to gray-green to opaque gray. Sanidine phenocrysts are often present in the matrix, as seen in both samples depicted here. The source of this material is in Presley Wash, east of Round Mountain, Arizona, and in the alluvium south of the juncture of Partridge Creek and Presley Wash in the same area.

Author
Michael Terlep/William Bryce, Northern Arizona University Anthropology Laboratories
File
presleywash.jpg
Filesize
133 KB