 | | Report (issue) | | Mountain-type Au-Ag polymetallic veins, Blue Mountains, Oregon, for use in resource and environmental assessment...Mountain-type Au-Ag polymetallic veins of eastern Oregon can be used: (1) to characterize the gold and silver...maximum depths, target areas, and overall lengths of mine workings for use in environmental assessment. The...target area of 160 hectares (fig. 8). Depth of mining in known deposits range from 31 to 915 m. The geometric... Eighty percent of the deposits have subsurface mine workings lengths between 1,100 and 5,900 m (fig |  | | Report (issue) | | eoresofo0000kell Telluride Ores of Boulder County, Colorado The Memoir Series of The Geological...America, Inc. Memoir 109 Telluride Ores of Boulder County, Colorado WILLIAM C. KELLY EpwINn N. GODDARD Department...and numerous ore samples were donated by local mining men, particularly Fred Dopp, H. M. Williamson,...supplied by William Byron, a mineral dealer and former mining engineer in Boulder, and by Professor Russell Honea...47 47 Vil Vili TELLURIDE ORES OF BOULDER COUNTY, COLORADO }.'1C=}(0)4)| ae aaa ene eens eee es |  | | Journal (article/letter/editorial) | | 23:14 19 October 2014 Vindicator Mine, Cripple Creek, Teller County, Colorado I n terms of sheer volume...globe, they have striking similarities in their mining history and mineralogy, but their geology is seemingly...ROCKS & MINERALS the Golden Circle mine at Sorrento and the Cline mine at Hancock, Maine, and from a vaguely...vaguely described locality near Monroe, Fairfield County, Connecticut. A compilation of telluride mineral...Consolidated mine at Dahlonega, Lumpkin County, Georgia; the Barite Hill gold mine in McCormick County, South |  | | Report (volume) | | Acknowledgements 5 Appraisal of identified resources 5 Mining and mineral exploration history 5 Mines, prospects...associated dikes host gold deposits at the Magnolia mine. Tungsten occurs in skarn deposits and quartz...geochemical values for gold and tungsten. The Magnolia mine, which is presently active, has in excess of...The area around the Blue Max prospect and the Magnolia mine has moderate mineral resource potential for...especially above 5,000 ft, it would probably not affect mining. Local roads sometimes become impassable due to |  | | Report (issue) | | Geological Survey Board and the Colorado Metal Mining Fund ~ oopr is PUBliC P[O'J>ERTY aud 1• DOt ~re~~o~...__________________________________________ _ 1 Summary of mining districts---.---------------------Introduction... _ Quartz monzonite gneiss ________________ _ Granite gneiss and gneissic aplite ________ _ Quartz diorite...Creek granite _________________ _ Pikes Peak granite _____________________ _ Silver Plume granite ___________________...Pre-Cambrian deposits _________________________ _ Mine descriptions __________________________ _ 39 39 |  | | Report (issue) | | description of the geology, mining history, and production of the major gold-mining districts in 21 States...relations ---------------------------History of gold mining and trends in production_ J\labama -----------...--------------Cleburne County ----------~----------------- Tallapoosa County --------------------------Alaska...------------------Cochise County -----------------------------Gila County --------------------------------Greenlee...ee County ----------------------------R[aricopa County ----------------------------R[ohave County -- |  | | Report (volume) | | map of the Richards mine, Mineral Point. 17. Geologic map of the Grayville mine, Mineral Point. 18. Geologic...No. 3 mine, Iowa County. Page FIGURE 25. Index map of Wisconsin-Illinois-Iowa zinc-lead district showing...PARTS OF THE UPPER MISSISSIPPI VALLEY ZINC-LEAD DISTRICT GEOLOGY OF THE DODGEVILLE AND MINERAL POINT QUADRANGLES...sandstone and an important aquifer in the mining district. The Platteville formation is 53 to 65 feet...GEOLOGY OF UPPER MISSISSIPPI VALLEY ZINC-LEAD DISTRICT member is subdivided into blue beds of dark bluish-gray |  | | 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...museum specimens. Some mineral aggregates, as clay, granite, limestone, sand, and sandstone, are included,...Oberlb Oklahoma........Prof. D. W. Ohern, Norman. Oregon............Prof. A. J. Collier, Eugene. Pennsylvania |  | | Report (issue) | | recovered by Dean Farris from mine dump waste in the Gold Hill district. The actual diameter of the button... . . . . . . . . . . . . . . . . . . . Kirwin district . . . . . . , . . . . . . . . . . . . . . . ....City) district .. . . . . . . . . . . . . . . . . . . . . . . . . 13 16 Stinkingwater district . . ...Sunlight district . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 18 22 Mine and... . . . . . . .. 39 39 40 40 40 41 41 Reported mine and prospect descriptions . . . . .. . . . . . |  | | Report (issue) | | Part II Geology and Gold Deposits of the Oatman District, Northwestern Arizona By ED DEWITT, JON P. THORSON...Marysville Mining District, Montana By JAMES W. WHIPPLE Gold Deposits of the Boulder County Gold District...Ferry County. 3. Hydrothermal deposits Nevada. 4. Hydrothermal deposits Washington Ferry County. I. Geological... CONTENTS Geology and gold deposits of the Oatman district, northwestern Arizona Abstract II Introduction...Geology and gold deposits of the Marysville mining district, Montana Abstract 129 Introduction 129 Geologic |  | Snyder, George L., Hausel, W. Dan, Klein, Terry L., Houston, Robert S., Graff, Paul J. (1989) Precambrian Rocks and Mineralization, Southern Wyoming Province - Hartville Uplift to Copper Mountain Area, Wyoming July 19-25, 1989. Field Trip Guidebook T332. American Geophysical Union | Report (issue) | | 2356). Cultural opportunity to visit traces of Oregon Trail stage coach route by which migrating settlers...iron-formation formerly quarried at the Atlantic City mine. Return to Holiday Lodge, Lander, for evenin~. Tuesday...Company, Bart Rea and Bruce Ward, owners of the Duncan Mine, Michelle Vinich of Club EI Toro, and Sue Homec...enclosing granite that they originally intruded, suggesting remobilization of the granite mass (Houston...2356). Cultural opportunity to visit traces of Oregon Trail stage coach route by which migrating settlers |  | | Journal (article/letter/editorial) | | alkaline-related gold deposits in the southern Rocky Mountains, USA: in¯uence of regional tectonics Received: 5 January...Geological Survey, Mail Stop 964, Denver, CO 80225, USA E-mail: kdkelley@usgs.gov S. Ludington US Geological...901, 345 Middle®eld Road, Menlo Park, CA 94025, USA magmas may have resulted in more productive gold...nature of mineralization in the Cripple Creek district and other smaller deposits along the Rocky Mountain...mineral belt (La Plata, Central City, and Boulder County areas), and in isolated complexes such as Cripple |  | | Journal (article/letter/editorial) | | THE ORIGIN GEOLOGY MAY, 1941 OF THE TUNGSTEN COUNTY, T. No. 3 ORES OF BOULDER COLORADO. • S. LOVERING...of sericitic alteration encases the Boulder County ferberite veins, but gives way abruptlyto a wide...GeologicalSurvey Board and of the ColoradoMetal Mining Fund. 229 230 T. S. LOVERING. Quartz gangue... Index map showing the location of the Boulder County tungsten belt and the general features of the regional...regional geology. TUNGSTEN ORES OF BOULDER COUNTY. 231 narrow belt from ArkansasMountain,9• milesW-SW |  | | Report (volume) | | GEORGE OTIS SMITH, DIRECTOR BULLETIN 594 SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN...GEORGE OTIS SMITH, DIRECTOR BULLETIN 594 SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN...of the ore deposits 2 27 30 Mining districts 2 Hayden Hill, Lassen County, Cal 2 30 30 Location and accessibility...filling 3 42 CONTENTS. Mining districts—Continued. Hayden Hill, Lassen County, Cal.—Continued. Ore deposits—Continued...shoots Milling High Grade district, Modoc County, Cal Location History of mining Accessibilty Previous descriptions |  | | Report (volume) | | ....................................... 102 District of Columbia .................................................................................. Oregon. ................................................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 |  | | Report (volume) | | location and means of access to all the metallic mining districts in the State, as well as a large number..._____________________________ 595 Copper: Chalcopyrite _________________________________________ -...documented summary of the beginning of Colorado mining history. Part of his summary is given here in the...had been recently found in the Tenmile district, Summit County. In his booklet, which today would be classed...however, because it contains lists of the mines and mining districts that were active at the time in Clear |  | | Journal (article/letter/editorial) | | : b. Tintic Mining rcgion, Utah. C. Absaroka Rangc, Wyoming. d. Telluride Mining District, Colorado. f...f. Mother Lodc Mining District,, California. f Tenmile Mining District, Colorado. K. Trinidad Coal Ficld...Basin. i. Monograph on the Crystal Falls Iron District of Michigan. tii. Monograph on the Illinois Glacial...Topographical and Geological Maps of Allegheny County, Maryland. Exhibited by thc MAHYLAXD GEOLOGICAL...Copper Ore and Associated Minerals, Last Chance Mine, RIES. Colorado Canyon, Col. Exhibited by HEISKICII |  | | Journal (article/letter/editorial) | | MELONITE IN BOULDER COUNTY, COLORADO EnNnsr E. Wanr,srnow, Uniaersity of Colorado,Bouliler, Colorad'o... possibly, native tellurium from the Stanislaus mine in the Mother Lode region of California. Later,...in telluride ore from the Forlorn Hope mine in Boulder County, Colorado. Additional occurrenceshave been...been noted for the Cripple Creek District of Colorado; Illinawortina, South Australial and, recently...(1946), who found that melonite in the RobbMontbray Mine appears in patches up to 20 mm. wide associatedwith |  | | Journal (article/letter/editorial) | | late discovery of the phenomenal Cripple Creek district, essentially subsequent to the development of...Analyses of calaverite from the Kirkland Lake district, Ontario, Canada, show up to several tenths of...1995). Calaverite is known from the Star mine in Montgomery County, North Carolina, where it occurs rarely...Vindicator mine, Haralson County, and the Consolidated and Singleton mines of the Dahlonega district, Lumpkin...Lumpkin County, Georgia. Although similarly almost unknown in the north-central states, it occurs as 5-mm |  | | Report (issue) | | Geology and Ore Deposits of the Boulder County Tungsten District Colorado GEOLOGICAL SURVEY PROFESSIONAL... Geology and Ore Deposits of the Boulder County Tungsten District Colorado By T. S. LOVERING and OGDEN TWETO...Geological Survey Board and the Colorado Metal Mining Fund UNITED STATES GOVERNMENT PRINTING OFFICE...__________________________ Principal rocks of the district.________________________ Pre-Cambrian rocks__...__________________________________ Boulder Creek granite and related rocks. ____ Distribution and mode of |  | | Report (volume) | | ~De_p"oSits. 'o.f. the' .· .· · : eese River·:District .ander County. . eVada ···· . ·, ·. ·· .·. " - '· ...Geology and Ore Deposits of the Reese River District Lander County Nevada By CLYDE P. ROSS GEOLOGICAL SURVEY..._______ ___ __ __ _______ The Manhattan Silver Mining Company and its contemporaries_ The interim pe...___________________ ~- _____ .., __________________ _ Mine descriptions _________________________________________________..._______________ _ Mines of the Austin Silver Mining Company _____________________ _ Mines on Lander HilL |  | | Journal (issue) | | Famous mineral localities: the Home Sweet Home mine ..................................................quartz, 10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo by...significant mineral localities in C o l o r a d o ,by county. In addition, there is a complete listing o f all...type localities, and an alphabetical cross-index by mine name. T INTRODUCTION In the Spring of 1976 a group...LOCALITY INDEX BOULDER COUNTY Caribou Mine Caribou (near Nederland), Caribou District (Silver, Uraninite |  | | Report (issue) | | ever since. Besides the La Grange mine, the largest hydraulic mine now in active operation, it contains...mines, particularly in the northern portion of the county. Large bodies of gravel of lower grade yet remain... Murphy, of the Union Hill mine; Mr. Pierre Bouery, of the La Grange mine; Mr. W. D. Ayers, of Poker...Globe mine; but more particularly to Mr. H. L. Lowden, formerly county surveyor of Trinity County, who...the whole of Trinity County except the south end and also the part of Humboldt County about the Hoopa Reservation |  | | Book (edition) | | YEAR 1687"—DAVID T. DAY, CHIEF OF THE DIVISION OF MINING STATISTICS AND TECHNOLOGY WASHINGTON GOVERNMENT...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...mmed at Broken Arrow aud Trout creek, in Sc. Clair county. The strata in this field are more faulted und...prong of Canoe creek, in St. Clair county, to Ha\sop creek, in Bibb county, a distance of 60 miles. Down to |  | | Report (issue) | | Encampment Mining District, Carbon County, Wyoming, with Comparisons to Deposits in the New Rambler Mine District...85540 INTRODUCTION The Grand Encampment Mining District, located in the Sierra Madre Range of southeastern...has been a center of considerable exploration and mining activity for a number of decades. Principal production...ores (Spencer, 1904). The Battle Lake area of the district (figs. 1 and 2) is traversed by a major shear...area is somewhat similar to that of the New Rambler Mine area in the Medicine Bow Mountains (fig. 1) where |
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