 | Schütte, Philip, Chiaradia, Massimo, Barra, Fernando, Villagómez, Diego, Beate, Bernardo (2012) Metallogenic features of Miocene porphyry Cu and porphyry-related mineral deposits in Ecuador revealed by Re-Os, 40Ar/39Ar, and U-Pb geochronology. Mineralium Deposita, 47 (4) 383-410 doi:10.1007/s00126-011-0378-z | Journal (article/letter/editorial) | | porphyry Cu and porphyry-related mineral deposits in Ecuador revealed by Re-Os, 40Ar/39Ar, and U-Pb geochronology...mineral deposits in southern, central, and northern Ecuador were dated by means of molybdenite Re-Os, biotite...rocks of a similar age, porphyry Cu deposits in Ecuador are frequently spatially associated with deeper-seated...B. Beate Escuela Politecnica Nacional, Quito, Ecuador e-mail: bbeate@uio.satnet.net Present Address:...majority of Miocene deposits occurs in southern Ecuador where areally extensive, post-mineralization (late |  | | Report (issue) | | base-metal-sulfide-bearing barite veins...........8 Late-stage kaolinite matrix breccias.........................9 Supergene...in pocket Figure 1. Location map showing the San Juan volcanic field.......21 Figure 2. Schematic cross-section..... 28 Figure 10. Aerial view of the Summitville mine................... 29 INTRODUCTION The Summitville...of Galactic Resources, operated an open-pit gold mine at Summitville during the period from 1986 to 1992...pond. Acidic, metal-rich mine waters emanating from several sources on the mine site are long-term concerns |  | | Journal (article/letter/editorial) | | MINERALOGY OF THE IDARADO Introduction MINE, ALTERED SAN SILVERTON JUAN FORMATION DISTRICT, AT THE ... the district is in rock alterationwithin the San Juan Formation,the order. Our studiesdeal with the...mineralogy San Juan is primarily a greenish-graytuff breccia of the altered wall rock of the Idarado mine. Emcomposed...centimeters across and show slight rounding. The San Juan alteration and can thus aid in the recognition...The geologyof the Silverton district in which the mine, showsextensivepropyliticalteration. Intrusive rocksof |  | | Report (issue) | | 11 The metamorphic belts of Ecuador The metamorphic belts of Ecuador CQVer photograph Cerro Hermoso... OVERSEAS MEMOIR 11 The metamorphic belts of Ecuador M Litherland,] A Aspden and RAJemielita Keyworth...andjf.MIEl,ITA, RA. )994. The metamorphic belts of Ecuador. Overseas Memofr of the British Geologi-cal Survey...7 Andean metallogenesis 9 Metamorphic rocks of Ecuador l0 Stratigraphical nomenclature 10 Metamorphic...15 16 17 18 19 Geomorphological framework of Ecuador 1 Location of the metamorphic/plutonic belts 4 |  | | Journal (article/letter/editorial) | | The Zuni Mine Downloaded by [North Carolina State University] at 12:59 07 January 2015 SAN JUAN COUNTY...Mexico 87185 he Zuni mine is located about 3 miles northwest of Silverton in the San Juan Mountains of southwestern...were described in 1884 by W. F. Hillebrand. The mine is located near timberline on the southern face...000 feet. Topography and the area surrounding the mine are shown on the U.S. Geological Survey Downloaded...map of the Zuni mine and vicinity. The approximate location of the trail to the mine is shown as a dashed |  | | Report (issue) | | the Veins and Vein Sediments, of the Golden Wonder Mine Lake City, Colorado: an Epithermal Hot Springs Gold-Alunite...west-east section, Golden Wonder Mine. West-east section, Golden Wonder Mine. Plan view map, third level....Quartzose sandstone with chert-kaolinite-alunite matrix. Bedded kaolinite-alunite. Rip-up clast of alunite-cemented...alunite. Hot-spring model for the Golden Wonder Mine. Isothermal log fO£-fS2 diagram, 250^C, 1 atm. pressure...Golden Wonder Mine 11 GEOLOGY OF THE VEINS AND VEIN SEDIMENTS OF THE GOLDEN WONDER MINE, LAKE CITY, |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . 23 San Juan County . . . . . . . . . . . . . . . . . . . ...mineral localities, with the minerals found at each mine or locality. Most mining districts and mineral localities...whole, along with those for which the specific area (mine, for instance) is not known. Other minerals, however...District (San Francisco Mountains). Rocky District (Rocky Range). San Francisco (Frisco) District (San Francisco...Green River District (S. W. Green River). San Rafael District (San Rafael Swell). GARFIELD COUNTY Colorado |  | | Report (issue) | | Geology and Ore Deposits ofthe Summitville District San Juan Mountains Colorado By THOMAS A. STEVEN and JAMES...rock____________ Primary ore deposits-__,._--___---Illite-kaolinite zone ___________________ Montmorillonite-chlorite...hole; B, Photomicrograph of rock from the illite-kaolinite zone, showing altered phenocryst; C, Photomicrograph...an altered feldspar phenocryst in the illite-kaolinite zone_,_____________ Following 8. A, Photomicrograph...Photomicrograph of kaolinitic rock from the illite-kaolinite zone; B, photomicrograph of a rock from the mont |  | | Report (issue) | | of geologic and climatic environments. Illite, kaolinite, vermiculite, aluminum-interlay ere d clay minerals...and mixed-layer clay along with some illite, kaolinite, quartz, feldspars, and carbonates but little...solution of cesium chloride, which contains as kaolinite. The removal of chlorite by acid treatradioactive...measure of the degree of crystallinity of the kaolinite (Schultz, 1960, p. 221). When the 7-A peak area...kaolmite-pluschlorite to illite: 7-A peak area Kaolinite -f- chlorite 10-A peak area (glycollated) = illite |  | | Report (issue) | | OF THE INTERIOR GEOLOGICAL SURVEY The Gladiator Mine, Lake City, Colorado: The mineralogy and paragenesis...................................... Geology and mine workings............................................... Generalized geologic map of the Gladiator Mine Lake City, Colorado...............................profile showing the three working levels of Gladiator Mine............................................. Diagram...paragenesis of vein minerals occurring in the Gladiator Mine............................ Overlay sketch of hand |  | Ringrose, Christopher R., Harmon, Russell S., Jackson, Simon E., Rice, Clive M. (1986) Stable isotope geochemistry of a porphyry-style hydrothermal system, West Silverton District, San Juan Mountains, Colorado, U.S.A. Applied Geochemistry, 1 (3) 357-373 doi:10.1016/0883-2927(86)90021-1 | Journal (article/letter/editorial) | | hydrothermal system, West Silverton District, San Juan Mountains, Colorado, U.S.A. CHRISTOPHER R . RINGROSE...intrudes Tertiary volcanic rocks of pre- and post-San Juan Caldera age along the western margin of the Silverton...INTRODUCTION STABLE isotope evidence from the San Juan Volcanic Field in C o l o r a d o has demonstrated...complex in the western San Juan Mountains (FORESTERand TAYLOR, 1980) and the Sunnyside Mine within the Silverton...the Silverton Caldera, which together with the San Juan and Uncompahgre Calderas, comprises a caldera |  | | Report (issue) | | Scientific Publishing Company, 1966-. Ame~ican Mine~alogist. CIM Bulletin (1974). Montreal, PQ: Canadian...for Quaternary Research). Cont~tb. Mine~al. Pet~ol .--Beit~. Mine~al. Pet~ol. Contributions to Mineralogy...to and Petrology. York: Springer International, Mine~alogy N~w I E & M~. Engineering and Mining York...Geological Survey, Reston, Virginia. Lapidary Journal. San Diego, Calif.: Lapidary Journal, Inc., 1947-. LPI... Colo.: Hart Publications, 1966-. World Mining. San Francisco, CA: Miller Freeman Publ tcation, 1974- |  | | Journal (article/letter/editorial) | | MultistageVein Ores of the Lake City District, Western San Juan Mountains,Colorado John,• F. SL^CK U.S. Geological...ores of the Lake City district, in the western San Juan Mountains, Colorado,have producedapproximately$12...pyroxmangite,calcite,sericite,and fluorite. At the Ute-Ulay mine, the largest producerof the district, titis assemblagehas...the Ute-Hidden Treasure vein systemat the Ute-Ulay mine, from quartzand sulfidesat the southwest end nearestthe...liquid-rich and vapor-rich inclusionsthat at the Ute-Ulay mine yield temperaturesof 206ø to 385øC and salinities |  | | Report (issue) | | ............42 10. The grid systems for the San Juan Basin study area..............46 in Tables...tabular humate-related uranium deposit model, San Juan Basin, N. Mex.................36 4. Application...is being applied using a prototype model in the San Juan Basin, the Nation's dominant uranium production...deposits and the results of the testing of the San Juan Basin model. to the authors: Critiques of each...III—Genetic-geologic model for tabular humate uranium deposits, San Juan Basin, New Mexico by H. C. Granger, W. I. Finch |  | | Journal (article/letter/editorial) | | Arizona, the Orphan deposit lies northwest of the San Francisco volcanic center, and the Cameron ore bodies... and the accompanying chemical changes. Caribou Mine, Boulder County, Colorado Among the Front Range...pyrite Argillization Orthoc1ase, andesine Kaolinite, montmorillonite Seridtization Orthoc1ase, andesine...lesser amounts of montmorillonite (5 per cent) and kaolinite (10 per cent). Quartz, calcite, and siderite are...altered to montmorillonite (35 per cent) with kaolinite (10 per cent). Primary orthoclase is partially |  | | Report (issue) | | THE BLANCO TRADING POST 7 1/2-MINUTE QUADRANGLE, SAN JUAN COUNTY, NEW MEXICO [Report includes 8 plates]...short tons) in the Blanco Trading Post quadrangle, San Juan County, New Mexico 17 11 BLANCO TRADING POST...(CDP) Map of the Blanco Trading Post quadrangle, San Juan County, New Mexico. These maps were com- piled...quadrangle is located in southeastern (48 km) San Juan County, New Mexico. It is approximately 31...the larger structural depression known as the San Juan Basin. Total relief is approximately 540 ft (162 |  | | Journal (article/letter/editorial) | | alteration minerals. Lithocap: blankets of alunite, kaolinite, and vuggy quartz formed from acid leaching of...Tayoltita), the 100-km-long Zamora belt in southern Ecuador (e.g., Fruta del Norte), and the 300-km-long Middle...sporadic IS deposits were also reported in Altiplano province (Noble et al., 1990) as well as central and Northern...interstratified clays, and smectite as well as kaolinite and siderite that extend locally to 1,000 m depth...Romania; Wallier et al., 2006; Fruta del Norte, Ecuador, Leary et al., 2016). Anyway, it seems that local |  | | Report (issue) | | ......... Creasus mine ........................................ 77 Red Jacket mine ....................and mineralogic boundaries in the crystalline province. Tusas Mountains . . . . . . . . . . . . . . ...district .................... 78 8. Mine and sample map of the Croesus mine . . . . . . . . . . . . . . 79...showing location of the Eureka mine . . . . . . . . . 98 13. Mine map, Eureka mine ...........................small deposits. These include kyanite,fluorspar,kaolinite,diatomite, and bentonite. T h e county has very |  | | Report (issue) | | 14 1. 2. 3. 4. 5. Asbestos ore Lead ore, Balmat mine, N. Y. Chromite-chromium ore, Washington Zinc ore...not yet discovered or not currently profitable to mine. The mining of mineral deposits, once discovered...inner argillic zone containing quartz, alunite, kaolinite, dickite, sericite assemblage, minor iron and...zunyite; (4) outer argillic zone containing quartz, kaolinite, sericite, illite, and less abundant chlorite...alunite-rich altered volcanic rock in Chekiang Province, China, has been mined since the 17th century |  | | Journal (article/letter/editorial) | | Copper Mine Downloaded by [North Carolina State University] at 23:01 15 March 2015 SAN JUAN COUNTY,...COPPER MINE is an open-pit copper mine located within the Big Indian mining district in San Juan County...and about the same distance southeast of Moab. The mine has been a noted source of exceptionally fine specimens... 7 miles south of the Big Indian Copper mine along San Juan County Route 106 (Big Indian Road). 372 ...Indian Copper mine is situated in southeastern Utah in the northeastern portion of San Juan County and in |  | | Report (issue) | | Utah-Federal Bldg., Rm. 8105,125 South State St. SAN FRANCISCO, California-Customhouse, Rm. 504,555 Battery...BULLETIN 1808 EVOLUTION OF SEDIMENTARY BASINS-SAN JUAN BASIN DEPARTMENT OF THE INTERIOR DONALD PAUL... New Mexico. (Evolution of sedimentary basins San Juan Basin ; ch. A) (U.S. Geological Survey bulletin...Geologic setting of the Morrison Formation in the San Juan basin A3 Methods of sample preparation A4 Description...A24 FIGURES 1. Grants uranium region, southern San Juan basin, northwestern New Mexico A2 2. Generalized |  | | Report (issue) | | pieces exposed in the Colorado mineral belt and the San Juan volcanic field. Hydrothermally altered rocks in...of like character in the enclosing geochemical province. The argument is made for the porphyrymetal system...caldera (Lipman and Steven, 1971) of the southern San Juan Mountains of Colorado. The Model The porphyry-metal...(James, 1971) of the porphyry-metal edifices in the province containing the study area. The provincial model...Creek Platoro caldera area field. -3- of the'San Juan volcanic The final construction consists of the |  | | Report (volume) | | formation________________________________________ San Juan breccia_______________________-_____________-____...Suffolk mine and Staatsburg Basin_-_-__------__------26. Map showing property boundaries and mine workings...the resurvey of the mineralized region of the San Juan Mountains. The youthful topography, with a total...that followed several periods of uplift of the San Juan peneplain, with repeated glaciations that formed...As this area is on the west flank of the great San Juan volcanic pile, west of the Silverton caldera, |  | | Report (issue) | | POTENTIAL MAPS OF THE FARMINGTON SOUTH QUADRANGLE, SAN JUAN COUNTY, NEW MEXICO [Report includes 12 plates]...short tons) in the Farmington South quadrangle, San Juan County, New Mexico 17 ii FARMINGTON SOUTH...(CDP) Map of the Farmington South quadrangle, San Juan County, New Mexico. These maps were compiled...1/2-minute quadrangle is located in northcentral San Juan County, New Mexico. Farmington, New Mexico, is...the quadrangle, north of the westward-flowing San Juan River. _1 _ Accessibility The Farmington South |  | | Journal (article/letter/editorial) | | composition of the Canton Saint-Onge wollastonite deposit, central Grenville province, Canada—M.D. Higgins...principles modeling of the infrared spectrum of kaolinite— E. Balan, A.M. Saitta, F. Mauri, and G. Calas...and kimberlites from the Alto Paranaiba alkaline province, Minas Gerais, Brazil—A.L.N. Araujo, R.W. Carlson...reduction and enhanced mobilization of arsenic in mine tailings—R.E. Macur, J.T. Wheeler, T.R. McDermott...Chamberlain, and F.J. Magilligan 1334 Quantification of mine-drainage inflows to Little Cottonwood Creek, Utah |
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