Black obsidian side-notched point, with concave base. M. Christopher 01/08/99

Black obsidian side-notched point with chipped base and one notch not as deeply notched as the other. Ash on dorsal side. M. Christopher 5/28/98

Black obsidian biface that is broken at both ends and tapers narrower at one end. M. Christopher 5/27/98

Brown

Black obsidian biface with both ends broken. 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 Silver Lake/Sycan Marsh. 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-] 33 [Collection Name] Bergen [Analysis] Specimen No: 9 [Source Location] Silver Lake/Sycan Marsh 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.

Black obsidian, corner-notched point. D. Bradley 02/10/99

Black obsidian corner notched point with concave base. The tip and corner are chipped. K. Peterson 10-16-98

Black obsidian, side-notched point; tip is broken along one edge (break is 1.8cm long). D. Bradley 01/12/99

Black obsidian biface. K. Peterson 1/20/98

Black obsidian side-notched point with a flat base and a broken tip. M. Christopher 10/23/1998.