Bove, D.J., Caine, J.S., and Lowers, H.A., 2012, Geologic and mineralogic controls on acid and metal-rich rock drainage in an alpine watershed, Handcart Gulch, Colorado: U.S. Geological Survey Scientific Investigations Report 2012–5067, 121 p.

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	*(1961) Minerals of Colorado; a 100-year record. Bulletin* Vol. 1114. US Geological Survey doi:10.3133/b1114**	Report (volume)
	Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT
	*Schrader, FC, Stone, RC, Sanford S. (1914) Useful minerals of the United States. Bulletin* Vol. 585. US Geological Survey doi:10.3133/b585**	Report (volume)
	it helpful to refer to Survey Bulletin 507, "The mining districts of the western United States," and to...abundant, it may have been completely exhausted by mining or quarrying. Deposits of minerals of wide distribution...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found
	*(1917) Useful minerals of the United States. Bulletin* Vol. 624. US Geological Survey doi:10.3133/b624**	Report (volume)
	............................................. Colorado........................................................................................ 102 District of Columbia ....................................to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to...abundant it may have been completely exhausted by mining or quarrying. Deposits of minerals that are widely...because they occur in sufficient quantity to warrant mining for their usual products, but because they furnish
	(1993) Mineral resource potential and geology of the White River National Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado, with a section on salable commodities. Bulletin Vol. 2035. US Geological Survey doi:10.3133/b2035	Report (volume)
	Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado U.S. GEOLOGICAL SURVEY BULLETIN...Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado By MARGO I. TOTH, ANNA B....Forest and the Dillon Ranger District of the Arapaho National Forest, Colorado / by Margo I. Toth ... [et...mineral resources Colorado White River National Forest. 2. Mines and mineral resources Colorado Arapaho National...National Forest. 3. Geology Colorado White River National Forest. 4. Geology Colorado Arapaho National Forest
	*Henderson, C.W. (1926) Mining in Colorado, a history of discovery, development, and production. Professional Paper* 138. US Geological Survey doi:10.3133/pp138**	Report (issue)
	Smith. Director Professional Paper 138 MINING IN COLORADO A HISTORY OF DISCOVERY, DEVELOPMENT AND PRODUCTJON...location, area, and organization of the mining counties of Colorado _________________________ _ Adams County_-..._____________________ _ Alamosa County __________________________ _ Arapahoe County _________________________...Archuleta County _________________________ _ Baca CountY-----------------------------Boulder CountY------...CountY----------------------~----Chaffee County _____________________·______ _ Clear Creek County _______________________
	*Kemp, James Furman (1901) The Ore Deposits of the United States and Canada* (4th ed.) The Scientific Publishing Co., New York.**	Book (edition)
	who have been engaged in the study of our great mining regions, especially in the West, have laid the...now in the active practice of the profession of mining engi neering. J. F. K. DECEMBER, 1899. NO TEXT...125-129; Marquette district, 129-136; Menominee dis trict, 136-139; Penokee-Gogebic district, 139-143; Vermilion...Western North Carolina and Virginia, 169, 170; Colorado, 170, 171; California, 171; Example 13, titaniferous...CHAPTER VI.— LEAD AND ZINC. Example 24, Upper Miss. Valley, 233-237; Washington Co., Mo., 238, 239; Livingston

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Chalcocite from Handcart Gulch, Hall Valley (Hall's Valley), Montezuma Mining District, Park County, Colorado, USA

Chalcocite from
Handcart Gulch, Hall Valley (Hall's Valley), Montezuma Mining District, Park County, Colorado, USA