 | | Report (volume) | | DIRECTOR BuiiIiETIN 574 MINING DISTRICTS OF THE DILLON QUADRANGLE, MONTANA AND ADJACENT AREAS BY ALEXANDER................................................. Mining districts...................................................................................... Mining development. ...................... .. - - ' -..................................... 18 Placer mining....... ~................................................................ 20 Present status of mining .....:........................................ |  | | Journal (issue) | | Famous mineral localities: the Home Sweet Home mine ..................................................Foord and R. F. Martin Mineral collecting at the Sunnyside & Idarado m in e s .............................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 |  | | Report (issue) | | zinc, tungsten, and copper. In 1896 world-renowned mining engineer Thomas ''T.A." Rickard called the San...San Juans one of Colorado's four great mining regions along with Leadville, Cripple Creek, and Central City...during the eighteenth century, were the first to mine in the San Juans. One of the earliest recorded expeditions...Above: August sunrise on middle Blue Lake, Ouray County Photo Jack Brauer/WideRange Photo LLC, 2010 Facing...discovered, mines were opened, and by 1874, small mining camps had begun to appear. The towns of Silverton |  | Vikre, P. G., Graybeal, F. T., Fleck, R. J., Barton, M. D., Seedorff, E. (2014) Succession of Laramide Magmatic and Magmatic-Hydrothermal Events in the Patagonia Mountains, Santa Cruz County, Arizona. Economic Geology, 109 (6) 1667-1704 doi:10.2113/econgeo.109.6.1667 | Journal (article/letter/editorial) | | Events in the Patagonia Mountains, Santa Cruz County, Arizona* Peter G. Vikre,1,† Frederick T. Graybeal...carbonate rocks of the Washington Camp-Duquesne district. Eruption of 73 to 68 Ma volcanic rocks in the...deposits in Paleozoic carbonate rocks at the Flux mine (~71 Ma). An event at 65 to 62 Ma is marked by emplacement...northern end of the batholith. It includes a deep, chalcopyrite-bornite resource (~60 Ma) that is associated...includes the Sunnyside porphyry Cu-Mo system and a Cu-Mo breccia deposit at Red Hill (Four Metals mine), both |  | | Journal (volume) | | on some Microminerals from the Ohio pit, Baraga County, Michigan Al Falster 920 McIntosh Wausau, Wl 54401... i The Ohio pit in Baraga County, Michigan, is an old open-pit iron mine. In vugs and cavities of the...minerals can be collected. Due to the fact that the mine has been abandoned for several years, the lower...black crystals up to 5 mm in maximum dimension. Chalcopyrite is about as abundant as sphalerite, it occurs...crude crystals on partially altered sphalerite, chalcopyrite and bornite. In cavities bearing both copper |  | | Journal (article/letter/editorial) | | 0.75 inch on edge, from the Henderson mine, Clear Creek County. Figure 2 (right). Green fluorite encrusted...Mountain Wilderness area near Columbine Lake, La Plata County; largest crystal measures 1.25 inches on edge;...C*O*L*O*R*A*D*O FLUORITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs...locations in Mexico; in Elmwood, Smith County, Tennessee, and in Hardin County, Illinois, in the United States;...Fluorite occurs in significant amounts in many of the mining districts of the Colorado mineral belt. [The Colorado |  | | Journal (article/letter/editorial) | | Hotazel and N'Chwaning, South Africa; at Butte, Montana; at Mont St. Hilaire, Ouebec; at several localities...Rhodochrosite occurs in significant amounts in many mining districts of the Colorado mineral belt, a large...southwestem comer of Colorado. Most of the metal mining in Colorado has been within this belt since the...Sweet Home mine, the 1 1. Urad mine, Clear Creek County 1. Sweet Home mine, Park County Climax mine, the Eagle...Eagle 12. Moose mine, Gilpin County 2. Sunnyside mine, San Juan County mine in Gilman, and var13. Julia |  | | Journal (article/letter/editorial) | | (above). Pyrite, Alice Glory Hole, Clear Creek County. Cluster of intergrown crystals showing light...Figure 2 (right). Pyrite, Mountain Spring mine, Rico, Dolores County. Cluster of modified cubes; specimen...C*O*L*O*R*A*D*O PYRITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs...fine pyrite specimens have been found at Butte, Montana; Park City, Utah; Washington State; and numerous...in significant amounts in virtually all of the mining districts of the Colorado mineral belt. (The Colorado |  | | Journal (article/letter/editorial) | | Economic Geology Vol. 72, 1977, pp. 1285-1320 Sunnyside Mine,EurekaMiningDistrict,SanJuanCounty, Colorado'Geochemistry... The Sunnysidemine, in the Eureka mining district, San Juan County, Colorado, produces700 tons/day of...quartz-sulfideores (30%); (III) massivegalena-sphalerite-chalcopyrite-bornite-hema- rite ores(40%); (IV) gold-telluride-quartz...geologicaland •09 o MONTROSE iO =1 'IsUN NYs IDE MINE __ <[I •-•:1 Ii iI •I -- •' • •U•AN•O COLa...southwesternColorado showing location of the Sunnyside mine and calderas of the San Juan volcanicfield |  | | Book | | enter must be obtained to prevent trespass. Old mine workings are dangerous and entering underground...oFtne ato aa Gem Ghd nQkTeane Uva a nes ly ia" mine Ui nrobs inesob cere ts ou ioe tok us 'aaieomolitt...exception of the rhodochrosites of the Sweet Home Mine, Alma, Colorado, which were loaned for photography...and the Central Mining District, Grant County Burro Mountains Apache No, 2 District Lake Valley Caballo...Mountains Chloride District Hansonburg District Socorro Area New Placers District Grants Area Nacimiento |  | | Journal (article/letter/editorial) | | Colorado quartz is inextricably tied to the state's mining history because so many superbly crystallized quartz...specimens originated from its innumerable mines. The mining industry and resultant mineral wealth directed...more authoritative accounts of the state's early mining and economic resources, provides a timeless perspective...Other comprehensive overviews of Colorado's mines, mining his tory, and/or economic geology are provided...rhyolite at Ruby Mountain near Nathrop in Chaffee County, Colorado). Striatums (which are perpendicular |  | | Journal (article/letter/editorial) | | THE SUNNYSIDE MINE EUREKA MINING DISTRICT SAN JUAN COUNTY, COLORADO TOM ROSEMEYER Box 586 Ouray, Colorado...Colorado 81427 The Sunnyside mine is Colorado's largest underground gold producer and to date has produced...mountain valley at an elevation of 12,240 feet, the mine was originally located on the shores of the now-drained...early 1900s, at the height of mining activity, the sprawling Sunnyside mine complex was a self-contained...boardinghouses, a hospital, and a commissary. Winters at the mine were long and harsh, often with snow depths of 10 |  | | 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 -- |  | | Journal (article/letter/editorial) | | Geography, Auburn University, Auburn, AL 36849, USA; E-Mail: saundja@auburn.edu; Tel.: +1-334-844-4884...sulfidation (LS) epithermal deposits in the western USA often show evidence of the former presence of nanoparticle-sized...naumannite (Ag2Se). Here it is proposed that chalcopyrite also forms nanoparticles in these ores, but...textures (e.g., no textural evidence of previous chalcopyrite nanoparticles). Textures described here show...bonanza veins typical of many western USA epithermal deposits. Chalcopyrite is the most abundant metal-sulfide |  | | Journal (article/letter/editorial) | | Photographs January-February: Aquamarine, Pioneira mine, Teofilo Otoni, Minas Gerais, Brazil. Keith Proctor...Fluorite and calcite, Minerva No. 1 Mine, Cave in Rock district, Har din County, Illinois. Harvard Mineralogical...photo. July-August: Quartz and chalcopyrite, Bandora mine, San Juan County, Col orado. Barbara and John...and photo. September-October: Grossular, Jeffrey mine, Asbestos, Quebec; painting by Susan Robinson. November-December:...November-December: Gold, Jamestown, Tuolumne County, California. California State Mining and Mineral Exhibit specimen; |  | | Journal (article/letter/editorial) | | Elmwood, Tennessee; the mines of the Tri-State district of Missouri-OklaDownloaded by [University of Nebraska...Lincoln] at 13:31 09 June 2016 homa-Kansas; Butte, Montana; Santander, Spain; many localities in Mexico, Germany...Barbara L. Muntyan, former director of the Ouray County Museum in Ouray, Colorado, is a frequent contributor...Portland mine, Ouray County 2. Camp Bird mine, Ouray County 3. Idarado mine, San Miguel County 4. Bachelor...Bachelor mine, Creede, Mineral County 5. Bulldog mine, Creede, Mineral County 6. Grizzly Bear mine, Ouray |  | | Report (issue) | | deposit. Table 4, part B, gives an alphabetic list of mine and properties followed by the deposit name. CHARACTERISTICS...deposits used in Table 1 may represent a major mine, district name, or local town name or other prominent... Pyrrhotite appears to be been reported in just a single mine in the East Belt of the Sierra Nevada foothills...86 percent of the districts in Nova Scotia. Chalcopyrite was "very minor" in the Mother Lode (Knopf,...Victoria (Junner, 1921). Hotz (1971) reports that chalcopyrite was uncommon in deposits of this type in the |  | | Report (volume) | | ....................................... 102 District of Columbia ......................................... 139 144 146 153 158 163 169 . 172 174 Montana..................................................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 |  | | Journal (article/letter/editorial) | | Recent Collecting Activity in SAN JUAN COUNTY, COLORADO B A R B A R A and J O H N M U N T Y A N 6978...material has been obtained from a number of San Juan County mines and prospects during the last decade, in...vicinity of Silverton, the principal town in the county. The American Tunnel, located just north of town...part of the Sunnyside mine complex and has been the major source of specimens in the county. Most museums...also a number of lesser-known mines in San Juan County from which fine mineral speci mens have been obtained |  | | Report (issue) | | organization is carrying on for the direct advancement of mining interests throughout the country than can readily...GOLD LODES OF THE CARRVILLE DIS TRICT, TRINITY COUNTY, CALIFORNIA. By DONALD FRANCIS MACDONALD. INTRODUCTION...writer spent 10 days in the Carrville district, Trinity County, Cal., and, incidental to other work,... gathered some data on its mining geology. A paper on the gold gravels x was pub lished, but baggage...written. In November, 1910, another visit to the district was made, but inclement weather handicapped the |  | | Journal (article/letter/editorial) | | inches; a floater specimen, Cross vein, Idarado mine, Ouray and San Miguel countries. Figure 2 (right)... Howard, Fremont County. C-O-L-O-R-A-O-O CALCITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado...Tennessee; the Viburnum Trend district, southeastern Missouri; the Tri-State district (Missouri-Kansas-Oklahoma);...marble (from the Yule quarry at Marble in Gunnison County) that has been used for many of the great monuments...Calcite occurs in significant amounts in many of the mining districts of the Colorado mineral belt. [The Colorado |  | | Report (issue) | | Prepared in cooperation with the Colorado State Mining Industrial Development Board A study of part of...hypogene enrichment_ -- __ ----- _--Exploration and mining ____________________________ _ Lake Emma-Ross Basin...of the Eureka district and adjoining areas. 3. Geologic sections of the Eureka district and adjoining...Forks, and Gladstone areas. 7. Map showing principal mine workings in the Eureka and adjoining districts....map and vertical projections of mine workings and stopes in the Sunnyside and Gold King mines. ni 23 24 |  | | Report (issue) | | 88-91. 1. Zinc ores-Colorado. 2. Zinc mines and mining-Colorado. I. Title. (Series) For sale by the Superintendent...Georgetown-Silver Plume district____________________________ Jefferson County______________________________________________...__ ___ __ __ __ __ __ _____ Kokomo (Ten ~ile) district _______ ._________________________ Breckenridge...district_______________________________ ~osquito Range district, including some outlying parts of the Leadville...County_______________________________________________ C86 Sunnyside district_ _ _ _ ______ __ ____ ____ ____ ____ |  | | Journal (article/letter/editorial) | | other minerals. These include arsenopyrite, chalcopyrite, chalcostibite, covelline, digenite, galena...invariably accompanies gold and is a coproduct of gold mining. In spite of its low price, coproduct silver is...dashed where approximately located _J_.J_.J_ Sunnyside rhyolite Thunder Mountain caldera JJ- ..LL _LL...FRACTURES .~R GRABEN \ MARGIN OF CALDERA COMPLEX A MINE 0 I 10 t 20 I KM Fig. 2. Main silicified zones...environs. Patterned area--Challis Volcanies, triangle--mine, circle--prospect Residence of Silver in Mineral |  | | Journal (article/letter/editorial) | | noted Figure 1. Camp Bird mine, level 2, Sneffels district, Ouray County. Raines-Pettem collection,...from the Leadville district, with another 50 million pounds mined in San Juan County (Henderson 1926).... During the twentieth century, the Gilman district surpassed Leadville in total copper production with...million pounds (Del Rio 1960). By comparison, Butte, Montana, produced more than 266 million pounds of copper...the Eagle mine’s (Gil304 ROCKS & MINERALS man district) production. This does not mean that copper has |
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