 | | Report (issue) | | Kofa Mountains lies in the central part of Yuma County, Ariz. These mountains cover an area of approximately...Castle Dome Range are the nearest. The Kofa mining district, from which the mountains derive their name...of Arizona ore body in 1896. The King of Arizona mine produced ore continuously from the date of its opening...of top low grade for profitable treatment. -The mine produced gold and silver bullion to the amount of...greatly predominating in value. The surface ore of the mine was extremely rich, much of it being worth SI a |  | | Journal (article/letter/editorial) | | CO 80401, USA; tmonecke@mines.edu FLUID INC., 1401 Wewatta St. #PH3, Denver, CO 80202, USA; fluidinc@comcast...low-sulfidation epithermal precious metal deposit in Nevada showed that colloform bands in these veins exhibit...epithermal quartz veins from the Sleeper deposit in Nevada forms dendrites intergrown with fine-grained colloform...low-sulfidation epithermal gold–silver deposit in Nevada. Both silica deposits are composed of silica microspheres...Deposit in Nevada 7 of 18 7 of 18 3. Epithermal Veins from the Buckskin National Deposit in Nevada 3.1. |  | | Report (issue) | | resource areas in the Basin and Range Province of Nevada by George Wong Open-File Report 83-721 This...Appendix A **~""~~"* "* *** *"* * » Table Table 1. District descriptions . .-.-.-. . -.-. . . . .-. .-. <...resource areas in the Basin and Range Province of Nevada By George Wong The purpose of this map is to identify...Province. These areas include past and present mining and prospecting localities as well as areas of...map are not legal mining district boundaries and may include more than one district as well as adjacent |  | | Journal (article/letter/editorial) | | SEPTEMBER 1948 HIGH-POTASH DIKES IN THE HOMESTAKE MINE, LEAD, SOUTH DAKOTA BY JAMES A. NOBLE CONTENTS Abstract...northern Black Hills Rhyolite dikes in the Homestake Mine Other occurrences of high potash dikes Origin of...the high potash rhyolite dikes in the Homestake Mine References cited Page 927 927 928 930 934 935 938...typical sections of rhyolite from the Homestake mine Page 933 934 936 Facing page 930 ABSTRACT Widely...about 10-mile radius with Lead and the Homestake Mine at the center. Five rock types are represented: |  | | Report (volume) | | _____ ________ 44 Miscellaneous occurrences in Nevada __ __ ______ 48 Tres Cerritos, Cal______________________________...__ 49 Cl if ton-Mo reuci district, Ariz__________ ,______ 50 Beaver County, Utah __ _____ _ ______ 50...about 7 miles due southwest of Marysvale, Piute County, Utah. It is located in and near sec. 16, T. 28...S., R. 4 W., and so far as known is covered by mining-claim locations. Marysvale is the present terminus...control of the Florence Mining & Milling Co., lessee of the Utah Gold Mountain Mining Co., including the so-called |  | | Journal (article/letter/editorial) | | temperature in holes drilled in hydrothermally active geyser-basins of Yellowstone Park. A temperature of 180°C...hole, drilled to a depth of 406 feet in the Upper Geyser Basin, measured 205°C at the bottom. In Italy diiring...al. (1948) reported that at Steamboat Springs. Nevada, the temperature in the bottom of one well, 156...COo-eharged water on albite; in 1937 he developed sericite by the same method, using orthoclase, anorthite...and 2950 psi pressure. Noll (1932) found that sericite forms in greatest amount at 250°C, the lowest |  | Vukoičić, Danijela, Ivanović, Radomir, Radovanović, Dragan, Dragojlović, Jovan, Martić-Bursać, Nataša, Ivanović, Marko, Ristić, Dušan (2020) Assessment of Geotourism Values and Ecological Status of Mines in Kopaonik Mountain (Serbia) Minerals, 10 (3) 269 doi:10.3390/min10030269 | Journal (article/letter/editorial) | | these historically valuable complexes, and the mining heritage was recognized as a potential for the...exploration covers mines in the Kopaonik Mountain area. Mining on this mountain began in ancient times. It has...one mine is active. Three abandoned (Gvozdac, Suvo Rudište and Raičeva Gora) and one active mine (Belo...Development Strategy in the Kopaonik area. Keywords: mining heritage; geosites; geotourism value; ecological...attractiveness, on the example of abandoned quarries. Mining activity and related mineral processing are generally |  | | Report (volume) | | ...................... 1. Rocks from Aroostook County..... ^..................'........... 2. Miscellaneous............................... Maryland and the District of Columbia.....................................1. Elliott County dike............................................... 2. Crittenden County dike..................................... 2. Crystal Falls district, Michigan.................................. ....................... Schist from the Aragon iron mine............................... ill 17 .18 18 19 |  | | Report (issue) | | matching the exposed mineralized rocks of a mining district with corresponding parts of a model (Briggs...for water and sulfur to produce a pyritic quartz-sericite or quartz-clay rock, corresponding to the destruction...fluid is greatly increased by fixation of water in sericite and clays and by dissolution of calcium and sodium...and pyrophyllite, in addition to or in place of sericite, and chalcedony, opal, and recrystallized as well...figure 4. The area includes the Crater and Elwoiod mining districts, which have no recorded production. Mineralized |  | | Report (volume) | | crystalline rocks Maine 1. Rocks from Aroostook County 2. Litchtieldite and associated minerals New lIampshire...rocks New Jersey Pennsylvania Delaware Maryland, District of Columbia 1. Peridotite and pyroxenite 2. Gabbro...Carolina (ieorgia Kentucky 1. Elliott County (like 2. Crittenden County dike Tennessee Missouri Arkansas Texas...1. Marquette region, Michigan 2. Crystal Falls district, Michigan 3 4 CONTENTS. Analyses-Continued...Aragon iron mine 4. Penokee-c iogebic region 5. Rocks of Pigeon Point, Minnesota 6. Mesabi district, Minnesota |  | | Report (issue) | | Metallurgist MARK EHLE, Mining Engineer J. B. TENNEY, Geologist G. R. FANSETT, Mining Engineer R. E. S. HEINEMAN..."The Geology and Mineral Deposits of Southern Yuma County" is the most pretentious bulletin of the kind that...in many parts of the county, it has not been easy to prospect southern Yuma County at all thoroughly, but...__________ . __ .____ _____ ______ __. General mining history_______________________ __________ ._______________...46 46 46 47 47 48 PART H.-MOUNTAIN RANGES AND MINING DISTRICTS .............. CHAPTER L-TRIGO MOUNTAINS |  | | Journal (article/letter/editorial) | | particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...stockworks, disseminated bodies Silicification, quartz-sericite/illite Main gangue minerals Steep and shallowly...alteration peripheral to the La Coipa HS-IS gold-silver district, Chile. f Hydrothermal breccia, generated by shallow-seated... Hycroft [Crowfoot-Lewis], and Florida Canyon, Nevada; Wood 1991; Ebert and Rye 1997; Fifarek et al....Coipa HS-IS gold-silver district (Fig. 4e), in the Fresnillo IS silver district, Mexico (Albinson 1988; |  | | Journal (article/letter/editorial) | | isotopiccompositions of other minerals in thesedeposits,suchas sericite,quartz, K-feldspar, etc. These analysesare appliedto...thesedeepcirwere recorded in quartz, K-feldspar and sericite. culating solutionsthe mineralization and alteration...meltedsnow. In this paper the term quartz,feldspar,sericite,alunite,etc.). The oxygen specifically appliesto...quartz-orthoclase-biotite alteration (2) quartz-sericite alteration closely associated Sample Localities...formations of this are given in Table 3. ! A [] OSWALDO MINE / LEEHILLAREA 1886 // (tactite copper mineralization) |  | | Report (issue) | | of the La Sal Quadrangle San Juan County, Utah, and Montrose County, Colorado GEOLOGICAL SURVEY Prepared...of the La Sal Quadrangle San Juan County, Utah, and Montrose County, Colorado By WILLIAM D. CARTER and...Tertiary(?) System _____________________________ _ Geyser Creek Fanglomerate_________________ _ Quaternary...Scorup anticline _______ -- ____ -_------- ___ --Geyser Creek syncline ________ --_----_------La Sal Creek...________________ - - Dugway fault _____________________ _ Geyser Creek faults ___________ - __ --Transverse faults |  | | Journal (volume) | | Tucker, District Mining Engineer Logan, District Mining Engineer Chas. V. Averill, District Mining Engineer...Engineer J. C. O'Brien, District Mining Engineer Arthur A. Center, Associate Metallurgical Engineer John...Mineral Technologist Reid J. Sampson, Assistant District Mining Engineer C. A. James M. Little, Assistant...Geology of Santa Rosa Mountain Area, Riverside County, California, by Lawrence B. Wright Geology and...Diego 15 County, California, by S. C. Creasey Tin Deposits of the Gorman District, Kern County, California |  | | Journal (article/letter/editorial) | | BOULDER COUNTY FREDERIC TUNGSTEN B. LOOMIS, ORES JR. ABSTRACT. Ferberite, the chief tungsten...potash feldspars,and muscovite,but are chiefly sericite and minerals of the montmorillonite-beidellite-nontronite...spring channel. T•I•, tungsten veins of Boulder County, Colorado, have been classedas epithermaldeposits;however...in the rough dissectedFront Range 952 BOULDER COUNTY TUNGSTEN ORES. 953 Province of the ColoradoRockieswith...miles from Montezuma County in southwesternColorado, northeastwardto Boulder County. This zone is from |  | | Book (edition) | | Rs v Engineering News -Record ~ Engineering and Mining Journal-Press Power Chemical and Metallurgical...rocks — Acid sulphate waters in igneous rocks — Mine waters of sulphate type —Sodium carbonate waters...veins Mineral association Origin Mine waters Rock alteration Mining and smelting operations The copper...rhyolite Argentite-gold-quartz veins — Tonopah, Nevada — The Comstock lode — Argentite veins — Gold veins...telluride of region, district district district district district district Nevada. CHAPTER XXV Metalliferous |  | | Report (issue) | | the Steamboat Springs Thermal System, Washoe County Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 458-C...the Steamboat Springs Thermal System, Washoe County Nevada By DONALD E. WHITE GEOLOGY AND GEOCHEMISTRY...GEOCHEMISTRY OF THE STEAMBOAT SPRINGS AREA, NEVADA GEOLOGICAL SURVEY PROFESSIONAL PAPER 458-C The present physical...level, vent 35, Main Terrace, showing subterranean geyser eruptions _____________ - ___ -_-----------------------------____...discharge rate and other eruption characteristics of geyser 23n, Main Terrace_____________________________ |  | | Report (volume) | | silver ores remain at the surface in this old mining district UNITED STATES GOVERNMENT PRINTING OFFICE,................................................. Mining history .........................................Colorado Map showing principal mining area of Silver Cliff-Rosita mining district and areas of detailed sampling...and sphalerite from the Silver Cliff-Rosita mining district .............................................of Oligocene age in the Silver Cliff-Rosita mining district of south-central Colorado discloses that appreciable |  | | Report (issue) | | of the Sleeper Gold-Silver Deposit, Humboldt County, Nevada an interim report By J. T. Nash , W. C. Utterback2................................................. Mining and exploration history......................................................................... Mine geology...........................................Figure 1. Location and geology setting of the Sleeper mine. Regional geology is simplified from Wilden (1964)... 3 Figure 2. Generalized geology of the Sleeper mine area and western foothills of the Slumbering Hills |  | | Report (issue) | | West New Market area, Mascot-Jefferson City mining district, Tennessee, by Helmuth Wedow, Jr., and J. R...Structure of the Timber Mountain caldera, southern Nevada, and its relation to basin-range structure, by...Tuff-a pantellerite ash-flow sheet in southern Nevada, by D. C. Noble_____ Precipitation and recycling...the Nevada Test Site, by K. A. Sargent_ The best value of porosity of lapilli tuff from the Nevada Test...circulation in the hot springs and geysers of the Daisy geyser group, Yellowstone National Park, by J. J. Rowe |  | | Journal (article/letter/editorial) | | vari- 3 eties. In the Joplin lead and zinc district of southwest Missouri the minerals crystallizing...blueblack powder (covellite) appears. In the Joplin district covellite after sphalerite has been found, so...naturally are the minerals which have been formed on .mine-tools, prehistoric implements, old coins and other...to hornblende (unitization), and orthoclase to sericite, a variety of muscovite mica, the process being...to show surface alteration to cerussite. Jasoer County. Missouri. U.S.N.M. 82Z04 Fig. 2. Pyrite to limonite |  | Djokic, Tara, Van Kranendonk, Martin J., Campbell, Kathleen A., Havig, Jeff R., Walter, Malcolm R., Guido, Diego M. (2021) A Reconstructed Subaerial Hot Spring Field in the ∼3.5 Billion-Year-Old Dresser Formation, North Pole Dome, Pilbara Craton, Western Australia. Astrobiology, 21 (1) 1-38 doi:10.1089/ast.2019.2072 | Journal (article/letter/editorial) | | those from New Zealand, Yellowstone National Park, USA, and Argentina. Rare earth element and yttrium geochemistry...University of Minnesota, Minneapolis, Minnesota, USA. 7 CONICET and Facultad de Ciencias Naturales y Museo...deposits from New Zealand, Yellowstone National Park, USA and Argentina. FIG. 2. Proximal to distal vent facies...fragments, and hydrothermal alteration minerals, i.e., sericite (Supplementary Fig. S3D–G). Bedded chert units...wide) that are commonly filled with white mica (sericite), and they terminate into dark, irregular bedding-parallel |  | | Report (volume) | | ...................... 1. Eocks from Aroostook County I............................. 19 19 2. Litchfieldite...................................... Maryland, District of Columbia.....................................56 1. Elliott County dike........................................ 56 2. Crittenden County dike....................................... 2. Crystal Falls district, Michigan ............................. 3. Menominee.............. Fourth. Schist from the Aragon iron mine ................. 5 64 66 70 70 71 72 72 ( 6 |  | | Report (volume) | | crystalline rocks Maine 1. Rocks from Aroostook 'County 2. Miscellaneous rocks5 v New Hampshire 5 Vermont...rocks New Jersey Pennsylvania Maryland and the District of Columbia 1. Peridotite and pyroxenite 2. Gabbro...Carolina Georgia Kentucky 1.. Elliott County dike 2. Crittenden County dike Tennessee Missouri Arkansas Oklahoma...1. Marquette region, Michigan 2. Crystal Falls district, Michigan 5 3. Keweenaw Point, Michigan 4. Menominee...Upper Quinnesec Falls Schist from the Aragon iron mine Page. 5 15 5 18 5 24 5 25 5 25 5 25 5 26 26 5 27 |
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