Mottled dark grey chert. Curved with short stem.

Irregular shape. Thick, retouch on flat edge. Dark red color.

Brown rectangular cobble, triangular in cross section, ends are fragmented and battered.

Brown;

Black obsidian side-notched base fragment. D. Bradley 10-26-98.

Black obsidian, corner-notched point. Tip and one tang are broken. D. Bradley 01/29/99

Black obsidian biface fragment that is broken at one end and tapers to a point on the opposite end. There is an adhering matrix on one side. M. Christopher 11/02/1998.

Black obsidian biface fragment that is broken at one end and tapers to a point on the opposite end. There is an adhering matrix on one side. M. Christopher 11/02/1998.

Black obsidian leaf-shaped, stemmed point. Both tips are rounded and the point is waterworn. K. Peterson 12/02/98

Black obsidian point with a bifurcate stem. M. Christopher 10/23/1998. 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-] 125 [Collection Name] Bergen [Analysis] Specimen No: 52 [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.