Black obsidian stemmed and shouldered point. 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-] 47 [Collection Name] Bergen [Analysis] Specimen No: 16 [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.

Black obsidian, stemmed, shouldered point with concave base. One shoulder is round; the opposite should is square. D. Bradley 01/12/99

A dark grey, chert, bifacial, flaked point; shoulder is chipped.

Triangular. Very dark brown. Planoconvex in cross section.

A black, obsidian, stemmed, shouldered point. T. Curtis-Flaherty 2/10/98

Black obsidian, stemmed point with square shoulders. Base is broken. D. Bradley 02/05/99

Black obsidian, stemmed, point with one rounded shoulder and one square shoulder. K. Peterson 1/20/98

Black obsidian, stemmed point with square shoulders and notched base. D. Bradley 02/05/99

Black obsidian stemmed, shouldered point. The stem is broken. 10/30/98 D. Bradley.

Black obsidian stemmed, shouldered point. D. Bradley 10-30-98.