Pre-Contact Anasazi Knife

[KuKulzA28]

Glad you posted this laEspadaAncha. Just throwing it out there, that while this does look like obsidian, there is a rock called dacite which can be almost as sharp but seems less brittle. It's grainier than obsidian, more like stone than glass, but still a very good blade-making material.

I wonder what kind of glue it is that holds it in... Pine pitch? Birch tar?
I'm not familiar with the materials that the indigenous Southwestern Americans used.