 | | Report (volume) | | Economic Geology of the Idaho Springs District Clear Creek and Gilpin Counties, Colorado GEOLOGICAL (=) I...Geology of the Idaho Springs District Clear Creek and -i ;i ?i Gilpin Counties, Colorado By ROBERT H. MOENCH...___________ Mines and prospects in the Idaho Springs district ________________ Previous studies.____...are in pocket] PLATE 1. Map of the Idaho Springs district, Colorado, showing location of mines and distribution...Generalized geologic map and sections of the Idaho Springs district. 3. Geologic section along the Big Five |  | | Report (issue) | | Deposits Central Part of the Front Range Mineral Belt Colorado By P. K. SIMS and others GEOLOGICAL SURVEY PROFESSIONAL...______________________________ _ History of uranium mining and production ____________ _ Geologic setting...__________ - ___ - ________ -----------Central City district _____________________ ------Quartz Hill-upper...____________________________ _ West Flack mine __________________ _ ~ercer County mine ______________ -German and Belcher...Iron mine, by A. A. Drake, Jr ___________ _ Jefferson-Calhoun vein _________________ _ Kirk mine ____ |  | | Report (volume) | | Geology of Uranium Deposits in the Front Range, Colorado By P. K. SIMS and D. M. SHERIDAN With sections...mines_______________________________________ Boulder CountY----------------------------------~-----------Jamestown...Generalfeatures--------------------------------------Blue Jay mine, by R. U. King__________________________ Fair Day...mine________________________________________ Nations Treasure mine, by R. U. King___________________ Victory group...Description of principal mines-Continued Boulder County-Continued Other areas __________________________ |  | | Report (issue) | | Nines and Prospects, Idaho Springs District Clear Creek and Gilpin Counties, Colorado Descriptions and Kapa...Energy Commission Introduction The Idoiho Springs mining district forms an important segment of tae Front...From 1859, when placer gold was discovered in Idaho Springs and lode gold in Central City, through 1959...from a 50-square-mile area that includes the Idaho Springs and adjacent districts to the north, west, and...and southwest. The adjacent Central City district, which produced ores valued at more than $100 million |  | | Report (issue) | | Geochemical Maps of Stream Sediments in Central Colorado, from New Mexico to Wyoming Open-File Report...Survey Cover: Overlooking North Fork Lake Creek and Colorado highway 82 east of Independence Pass, with... Geochemical Maps of Stream Sediments in Central Colorado, from New Mexico to Wyoming By Robert G. Eppinger...Acting Director U.S. Geological Survey, Reston, Virginia: 2015 For more information on the USGS—the Federal...Geochemical maps of stream sediments in central Colorado, from New Mexico to Wyoming: U.S. Geological Survey |  | | Report (issue) | | Front Range Mineral Belt Gilpin and Clear Creek Counties. Colorado GEOLOGICAL SURVEY PROFESSIONAL Prepared...Front Range Mineral Belt Gilpin and Clear Creek Counties, Colorado By E. W. TOOKER GEOLOGICAL SURVEY...Front Kange mineral belt, Gilpin and Clear Creek Counties, Colorado. Washington, U.S. Govt. Print. Off...belt, Gilpin and Clear Creek Counties, Colorado. 1963. (Card 2) 1. Geology Colorado Front Range. 2. Petrology...Petrology Colorado Front Range. 3. Ore deposits Colorado. 4. Mineralogy Colorado Front Range. 5. Metamorphism |  | | Report (volume) | | (A) Geology of Precambrian rocks, Idaho Springs district, Colorado, by Robert H. Moench. (B) Geology... Geology of Precambrian Rocks, Idaho Springs District, Colorado By ROBERT H. MOENCH CONTRIBUTIONS...of the Idaho Springs district____________ In pocket 2. Geologic sections of the Idaho Springs district...by present and previous workers in the Idaho Springs district ____________________ ----- ________ ----2-9...ROCKS, IDAHO SPRINGS DISTRICT, COLORADO By RoBERT H. MoENCH ABSTRACT The Idaho Springs district, an area |  | | Report (volume) | | . 234 " y { " ,-t .. .~,:",. I " , COLORADO "or.! _ +, (~ STATE OF .~ :'(' COL~ADO /... BULLETIN 40 RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BlaLlllGRAPHY by James L. Nelson-Moore,...Energy COLORADO GEOLOGICAL SURVEY DEPARTMENT OF NATURAL RESUURCES STATE OF COLORADO DENVER, COLORADO 1978...ete 11 st r ng of rad i aaet 1ve occurrences 1n Colorado, with a comprehensive blbi iography and bibliographic...on the Colorado Plateau sparked several periods of exploratIon that ultimately led to a mining "boom ll |  | | Report (volume) | | ; Garland Peyton, director, division of mines, mining, and geology, department of natural rnsources,...geologist, and Linwood H. Warwick, chief clerk, Virginia Geological Survey, Clrnrlottesville, Va.; Harold...the generous support of thousands of individual mine operators, distributors, and consurnors, as wdl...Bituminous-coal mining suffered the largest increase in its fotulity rate, mainly because of a series of mine disast;ars...Govnr.mn ('.nt C(lncern eel with d ofcnst~. 'l'ho Mining u.n |
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