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| distribution and is of minor importance. Possible Depth of Mining and-Boring. ALFRED C. LANE. Geol. Society of America...depth of mining was studied from the construction of a curve representing the minimum cost of mining at various...normal fault in the railroad cut near Yardley, Bucks county, Pa., had seeming importance from a mistake, through...highly quartzose filling is derived from neighboring gneiss, or still closer sand rock, and not Small geological...fault rock of the Chalfont railroad cut, Bucks county, Pa., formerly supposed to fill confusedly a fault |
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| main drainage channel for the area. It enters the district from the Yellowstone SCIENCE. Park about the...country are partly crystalline schists, including gneiss, schists, with granite and other granular rocks...with sandstone and some shale. Over this is the Colorado group, including Benton shales and Niobrara limestone...extensively in the southeastern corner of the district and form the Gallatin Range along the south- ...sheet. The chief economic deposits of the district are the gold-bearing gravels of Emigrant, Bear and Crevice |
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| COLORADO GEOLOGICAL SURVEY BOULDER R. D. GEORGE. State Geologist BULLETIN 10 GEOLOGY AND ORE DEPOSITS...DEPOSITS OF THE GOLD BRICK DISTRICT COLORADO By R. D. CRAWFORD and P. G. WORCESTER DOI: https://doi.org/10...CHARLES A. CARLSON Governor of Colorado Presi dent University of Colorado President State School of Mines...honor to transmit herewith Bulletin 10 of the Colorado Geological Survey. Very respectfully, R. D. GEORGE.... . . . . . . . . . . . . . . . . History of mining . . . . . . . . . . . . . . . . . . . . . . . |
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| 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 |
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| ............................................. 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 |
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| of the Leadville 1°X2° quadrangle, west-central Colorado : summary and discussion I by Alan R. Wallace...Radioactive dating-Colorado-Leadville Region. 2. Geology, Stratigraphic. 3. Geology-Colorado-Leadville Region...Appendix E. Geochronologic data listed by mining district .. ........... ............. .......... .....geochronology samples, Leadville 1°X2 o quadrangle, Colorado. III IV CONTENTS FIGURES 1. 2. 3. 4. 5. 6...of the Leadville 1°X2° quadrangle, west-central Colorado........................ 2 Map showing major geologic |
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| Chief Geologist Logan, District Mining Engineer W. Burling Tucker, District Mining Engineer Reid J. Sampson...Assistant District Mining Engineer Chas. V. Averill, District Mining Engineer J. C. O'Brien, District Mining...Statistician and Curator James M. Little, Junior Mining Engineer (Librarian) Elisabeth L. Egenhoff, Editor...military service. • Los Angelas Los Angeles Sacramento Redding San San San San San San San Francisco...Geology of Palm Springs-Blythe Strip, Riverside County, California, by William J. Miller Geology of Parts |
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| Maroon Bells-Snowmass Wilderness, Gunnison and Pitkin Counties, Colorado. [Denver, CO] : U.S. Geological...Geologic map of the Mt. Axtell quadrangle, Gunnison County, Colorado. Reston, Va. : U.S. Geological Survey...Falls-Lawton Index to mining assessment reports, Northwest Territories. Index t9 mining assessment reports...geologic map of the Big Ten Peak quadrangle, Nye County, Nevada. [Reston, Va.] : U.S. Geological Survey...map of the Miles jCity Creek quadrangle, Custer County, Montana. Reston, Va. : U.S. Geological Survey |
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| resource map 24 Mining Districts and Prospect Areas in New Mexico by Virginia T. McLemore edited by...New Mexico Institute of Mining and Technology Socorro, New Mexico 2017 Mining Districts and Prospect...Resources Nelia Dunbar, Director and State Geologist Mining Districts and Prospect Areas in New Mexico by Virginia...Maureen Wilks A division of New Mexico Institute of Mining and Technology Dr. Stephen G. Wells, President...1800s from 246 mining districts and prospect areas (excluding coal, oil and gas). Today, mining is still an |
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| 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 |
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| YEAR 1687"—DAVID T. DAY, CHIEF OF THE DIVISION OF MINING STATISTICS AND TECHNOLOGY WASHINGTON GOVERNMENT...exten sive deposits, such as coal and iron fields, gold belts, etc., are mentioned in general terms. 688...and consump tion, or better and cheaper means of mining, extraction, and convey ance to market, may in...correspondence has been carried on with geologists, mining engineers, and other local authorities, and various...ALABAMA—Mined. Mineralogical name. Coal, var. bitu minous. Gold. Common name. Remarks. Coal, bituminous coal |
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| ........................ 5 5 Distribution of mining districts..................................................................................... Colorado......................................................................... PART II. Catalogue of mining districts, by J. M. Hill..................................................... Classification of mining districts........................................counties....................................... Colorado.............................................. |
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| £LqL \3 —OF— Colorado Deposits. u PROFESSOR AT STATE SCHOOL OF GOLDEN, COLORADO DENVER, COLO.:...delivered by the author to the students of the Colorado State School of Mines. It is published with a...interested in the geological relations of the mines of Colorado. The first part of the work contains a rough sketch...sketch is further applied to the local geology of Colorado. The second part refers to the phe¬ nomena of...illustrated by Colorado. The last part contains a brief account of some of the principal mining districts |
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| INSTITUTE OF MINING & TECHNOLOGY CAMPUS STATION SOCORRO, NEW MEXICO NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY......... 87 26. Dry Canyon bioherm, Virgilian, Sacramento Mountains . ...............94 27. Permian and............. " " 12. Diagrammatic section from Sacramento Mountains area west-southwestward to Naco Hills...Gobbler, Beeman, and Holder formations in the Sacramento Mountains, the Red House, Nakayc, and Bar B formations...parts of the region, on the southern edge of the Colorado Plateau, and in the Estancia Valley, Acoma embayment |
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| nos. 1, 2. Boston, Mass. American Institute of Mining Engineers: Bulletin, nos. 121-132; Transactions...Mineralogist, vol. 2. Philadelphia, Pa. American Mining Congress: Report of Proceedings, 19th Annual Session...nos. 1-9. San Francisco, Cal. California State Mining Bureau: Bulletin, nos. 72-75. San Francisco, Cal...Summary report for 1916. Ottawa, Ont. Canadian Mining Institute: Monthly Bulletin, nos. 57-68;. Transactions...Transactions, vols. 19, 20. Ottawa, Ont. ' Canadian Mining Journal, vol. 38. Toronto and Montreal, Canada |
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| BLACK MOUNTAINS, AND.GRAND WASH CLIFFS MOHAVE COUNTY, ARIZOiNA BY F. C. SCHRADER WASHINGTON GOVERNMENT...Physiographic features_____________________________ 17 Colorado Plateau_______________________ Great Basin province__________...Mountains ______________________ Black Mountains, or Colorado Range____________ Eldorado Range____________________________..._____________________.__.___________ Detrital-Sacramento Valley___________________ Hualpai Valley.___...__ .___ 44 Mining districts._____________ ______.____ ___ 45 Production of Mohave County._____________ |
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| Geology in the Leadville 30-Minute Quadrangle, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 726-C...Geology in the Leadville 30-Minute Quadrangle, Colorado By OGDEN TWETO and J. E. CASE GEOPHYSICAL FIELD...geophysical data on the most productive part of the Colorado mineral belt UNITED STATES GOVERNMENT PRINTING...-----------------------------------Precambrian gneiss ........... --------------------------------------·...of the Leadville 30-minute quadrangle, central Colorado.... ----------------------------------------- |
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| DIVING FOR GOLD IN OREGON* Introduction The combination of leisure time, the lure of gold lying hidden...large demand for information on diving for placer gold. This article has been prepared to assist and inform...skin diver who wants to try his luck looking for gold in Oregon. Most of the information on methods and...comprehensive article by W. B. Clark, "Skin diving for gold in California", which ,appeared in the June, 1960...references to articles concerned with placer gold mining appear at the end of the article. Information |
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| GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................San Isabel and White River National Forests Lake County Land Exchange Offer (Iocmin40) ......................... 47 White River National Forest Dillon District Land Exchange Joint Venture (Iocmin38) ................................... 94 White River and Gunnison National Forests Sylvan Lake Land Exchange (Iocmin42) |
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| organization is carrying on for the direct advancement of mining interests throughout the country than can readily...in area of folio. stone, mica, corundum, iron, gold. shale, sandstone. Grant, U. S.; Bur- Zinc, lead...Pisgah........ ...... N.C.-S.C..... 148 Joplin district...... Mo.-Kans .... 476 149 Penobscot Bay ........... Mica, corundum, soapstone, talc,kaolin,gold,graphite, copper, building stone, lime, clay. Smith...Leverett, F. earth, underground water. Silver, gold, building stone, lime. Lime, clay, coal, underground |
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| Geology of the Ahmednagar District, Maharashtra. FftMGeology of the Dhule District, Maharashtra. PAM Geology...Geology of the Jalgaon District, Maharashtra. PAH Geology of the Nasik District, Maharashtra. PAM 870901-870930...GIS GISS Main PAGE Geology of the Sholapur District, Maharashtra. PAM 1976. Geology of the west-central...G(227) V818m no.3 Management and economics of mining operations : proceedings. Kalgoorlie, Western...Kingston Range Wilderness Study Area, San Bernardino County, California. (200) E no.!709-D Washington, D.C |
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| 206, GEOLOGY AND ORE DEPOSITS OF THE BODIE MINING DISTRICT 5:0 in ccercisevenernneseisneineet ne tees...Calaveras County, showing the heap leaching pad during construction. An article describing gold recovery...Woods Dupras Louise Huckaby 14th Congress — 1990 Mining and Metallurgical Institutions Jeff Tambert Department...Council of Mining and Metallurgical Institutions, 1416 Ninth Street, Room 1341, Sacramento, CA 95814...916-445-1923) organized by the Institution of Mining and Metallurgy, will be held in Edinburgh, Publications |
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| ......................................... 395 Colorado.......................................................................................... 401 District of Columbia................................................................. 407 Maryland and District of Columbia............................................................................... 463 Mining operations.......................................center and Tillman in extreme right. Copper River district (No. 115). Looking down th e Copper river, showing |
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| Bulletin 955-D GOLD PLACERS AND THEIR GEOLOGIC ENVIRONMENT IN NORTHWESTERN PARK COUNTY, COLORADO BY QUENTIN...STATE OF COLORADO, THE COLORADO METAL MINING FUND THE COLORADO MINING ASSOCIATION AND THE COLORADO GEOLOGICAL...Glacier_____ _____ _ _ _ ___ .Wisconsin stage of Sacramento Glacier-_--___-__-__-_______,Moraines of pre-Wisconsin...Gulch______________________ 144 144 144 CONTENTS Gold placers___________-__________________-_------------------__-_...--_-__-_------_-..__ Production and fineness of gold.___________________________ Distribution ______ |
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| org/details/reportofstatemin15cali CALIFORNIA STATE MINING BUREAU FERRY BUILDING, SAN FRANCISCO ^LETCHER...1915-1916 CALIFORNIA STATE PRINTING OFFICE SACRAMENTO 19 19 LIBRARY UNIVERSITY Cr CALIFORNIA Da...Statement xxiii Participation of the California State Mining Bureau in the Panama-Pacific International Exposition...Production General Features I. Alpine County. 5 6 6 , Mining Districts The Mogul and Monitor Districts...Hercules Company 14 23 Silver Mountain District Silver King District Mineral Water Grover's Hot Springs |
