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Spear point or knive of obsidian. Height: 2.6 inch Anasazi Culture, Bandelier National Monument (New Mexico).

Finely worked spear and arrow points made of flint, quartz, obsidian and chalcedony. Maximum length about 3.6 inches. Snaketown (Arizona), Hohokam culture, ASM.
ASM = Arizona State Museum, University of Arizona, Tucson (Arizona)