Black obsidian side-notched point with a flat base. There is a natural notch on the ventral side. 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-] 54 [Collection Name] Bergen [Analysis] Specimen No: 23 [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, glassy.

Triangular and black; base broken.

Black obsidian, unstemmed point with concave base. D. Bradley 01/14/99

Black obsidian, lanceolate, corner-notched point. Base is broken. D. Bradley 01/11/99

Black flake with edge retouch.

Black obsidian biface. D. Bradley 02/07/99

Black obsidian leaf-shaped biface. D. Bradley 10-26-98.

Black obsidian point fragment with missing base. There is an adhering matrix on one side. K. Peterson 2/5/99

Black obsidian, stemmed, bifurcated point with a broken tip. D. Bradley 01/20/99