Grey chert, bifacial flaked, it has a five sides and a concave base; basal sides diverge slightly toward distal end; pentagonal.

Black obsidian biface (point?). Base is broken. D. Bradley 02/07/99

Desert Side Notched. Light gray.

Obsidian leaf-shaped stemmed point, with contracting stem.

Black obsidian side-notched point with a split-stemmed and serrated edges. M. Christopher 10/16/1998. Dr. Dennis Jenkins, University of Oregon, sent this specimen to Northwest Research Obsidian Studies Laboratory, Corvalis, OR for analysis (on loan 11/30/98 - 4/9/99). A portion of this specimen was removed for obsidian hydration. The source of raw material was determined to be Cougar Mountain. Northwest Research Obsidian Lab placed a paper tag in the specimen bag with the following information: [Lab Contract #] BO-98-91 [Catalog #1989-57/35-M-] 51 [Collection Name] Bergen [Analysis] Specimen No: 20 [Source Location] Cougar Mountain See also the following report from Northwest Research Obsidian Studies Lab for more detailed analytical data: Skinner, Craig E. and Jennifer J. Thatcher 1998 "X-ray Fluoresence Analysis of Artifact Obsidian from the Bergen Site, Fort Rock Lake Basin, Lake County, Oregon." Northwest Research Obsidian Studies Laboratory, Report 98-91, Corvalis OR. Dr. Jenkins' interpretation of the data was reported at the Northwest Anthropological Conference, 4/8/99 - 4/10/99 in his paper entitled, "Obsidian Characterization and Hydration Results of the Fort Rock Basin Prehistory Project." D. Bradley 04/12/99.

Grey oval cobble with flat base (bifacially flaked), battering on opposing end.

White

White.

Brown.

Surface Depth: 2`, #10066 Flat triangular