2013-04-10_PERMIT FILE - C1981019A (16)

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Historic Properties Treatment Plan, Collom Mine, Colorado 23 Two retouched flakes were recovered. Retouched Flake 1 is made from an opaque white chert flake and exhibited 1.3 cm of retouch along a single lateral margin. The overall flake measures 3.2 x 2.5 x 0.3 em. Retouched Flake 2 is made from a gray chert flake that was retouched along a single lateral side. The flake measures 5.2 x 4.6 x 0.8 cm, and the retouched portion of the flake measures 4.0 cm. The single sidescraper recorded at the site, Scraper 1, is made from a tan chert and measures 5.6 x 4.7 x 1.3 cm. The scraper is made from a tertiary flake with a worked steep lateral angle. Three choppers were recovered. Chopper 1 is a sandstone cobble exhibiting working on two lateral edges that create steep angles. The chopper measures 14.7 x 11.2 x 4.8 cm. Chopper 2 is a sandstone cobble that was worked along both lateral edges, with heavy usewear. The chopper measures 17.9 x 11.6 x 6.4 cm. Chopper 3 is a chert cobble exhibiting steep bifacial flaking along the proximal edge that appears utilized. The chopper measures 9.0 x 6.2 x 3.0 cm. Most of the 789 pieces of debitage recorded at the site consist of white chert flakes (n = 469; 59.4 %), followed by brown, black, gray, and tan chert. Six obsidian flakes also were recorded at the site. Approximately 80% of the flakes are tertiary, with about 12% secondary and 8% primary. Nine pieces of groundstone were recovered. Groundstone 1 is a mano with one pecked face made from a rounded sandstone river cobble. The groundstone measures 14.6 x 8.5 x 4.0 em, and the pecked portion of the mano measures 6.0 x 3.2 cm. Groundstone 2 is a sandstone metate measuring 56.3 x 31.2 x 2.7 em with one significantly ground face. The grinding surface measures 24.0 x 13.0 cm. Groundstone 3 is a sandstone metate measuring 30.3 x 21.2 x 6.9 cm with a single grinding surface exhibiting moderate use. The grinding surface covers one side completely. Groundstone 4 is a metate fragment measuring 14.2 x 13.2 x 6.0 cm with a grinding surface that exhibits moderate use. The metate may have been damaged by a plow. A single entire side is ground. Groundstone 5 is a sandstone mano with a single grinding surface that 47599 TRC Mariah Associates Inc.