	*Ransom, Jay Ellis (1964) A Range Guide to Mines and Minerals* - How and Where to Find Valuable Ores and Minerals in the United States. Harper & Row, New York.**	Book
	commercial ores and secondary minerals by state, county, township, and geologic range. For easy identification...cities, and many of today’s prosperous western county seats began as mining-boom camps. trating sand...Whether you such as those listed alphabetically by county, township, and range in Part II of this book. Where...the heart of the then most prolific metal-mining district of Central Europe. He had grown up with a boy’s...regional offices include: Federal Center, Denver 25, Colorado; 345 Middlefield Road, Menlo Park, California;
	*Lovering, T.S., Goddard, E.N. (1950) Geology and ore deposits of the Front Range, Colorado. Professional Paper* 223. US Geological Survey doi:10.3133/pp223**	Report (issue)
	Geology and Ore Deposits of the Front Range Colorado By T. S. LO\'ERING and E. N. GODDARD GEOLOGICAL...in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund ~ oopr...hornblende gneiss ____________ _ Quartzite at Coal Creek ________________ _ Igneous rocks _____________________________...Quartz diorite and associated hornblendite_ Boulder Creek granite _________________ _ Pikes Peak granite ..._____________________ _ Copper deposits in Jefferson County __ _ F. M.D. property _____________ _ Malachite
	*(1990) Bibliography and Index of Colorado Geology, 1984-1989. Information Series* 30. Colorado Geological Survey**	Report (issue)
	Series 30 Bibliography and Index of Colorado Geology, 1984-1989 Colorado Geological Survey Department of...Resources Denver, Colorado 1990 Information Series 30 Bibliography and Index of Colorado Geology, 1984-1989...Institute under contract to the Colorado Geological Survey Colorado Geological Survey Department of...of Natural Resources Denver, Colorado 1990 ii FOREWORD In recognition of the need to more effectively...published literature on the state's geology, the Colorado Geological Survey is pleased to release Information
	*(1994) USGS research on mineral resources, 1994; Part A, Program and abstracts. Circular* 1103. US Geological Survey doi:10.3133/cir1103a**	Report (issue)
	National Scenic Area, California. Summitville, Colorado, has been the focus of an intense effort to understand...San Juan Mountains and adjacent San Luis Valley, Colorado Historic mining camps of southeastern Arizona...and the formation of iron bogs, Rocky Mountains, Colorado 9:10 Solid Waste, U.S. Environmental Protection...southwestern edge of the Colorado Plateau Robert J. Kamilli (USGS), The Mogollon mining district-Results from mapping...alteration, and mineralization at the Orcopampa Ag-Au district, southern Peru EdDeWitt1, G. P. Landis1, R. E

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Goethite from Geneva Creek, Geneva District, Clear Creek County, Colorado, USA

Goethite from
Geneva Creek, Geneva District, Clear Creek County, Colorado, USA