 | | Report (volume) | | RELATED TO WILDERNESS WILDERNESS AREAS f EAGLE CAP, OREGON GEOLOGICAL SURVEY BULLETIN 1385 -E MINERAL...OF THE EAGLE CAP WILDERNESS AND ADJACENT AREAS, OREGON View north from the crest of Eagle Cap, July...of the Eagle Cap Wilderness and Adjacent Areas, Oregon By PAUL L. WEIS, J. L. GUALTIERI, and WILLIAM F...the Eagle Cap Wilderness Area and adjacent areas, Oregon (Studies related to wilderness wilderness areas)...Bibliography: p. 84-86. 1. Mines and mineral resources Oregon-Eagle Cap Wilderness. I. Weis, Paul Lester, 1922II |  | 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...2356). Cultural opportunity to visit traces of Oregon Trail stage coach route by which migrating settlers...2356). Cultural opportunity to visit traces of Oregon Trail stage coach route by which migrating settlers...of Silver Springs Fault ~~~~ ~"'~"," [3l] Metabasalt of Mother Featherlegs i ~ L Fold axis ā¢...of Silver Springs Fault ~~~~ ~"'~"," [3l] Metabasalt of Mother Featherlegs i ~ L Fold axis ā¢ |  | | Journal (article/letter/editorial) | | settlement was initially spurred by the lead-zinc mining in its southwest comer, a heritage preserved by...Racine (Scovil 1994), the pegmatites of Florence County (Koehier 1989) and the Wausau area (Falster 1987)...marcasite. A major mining district, the Upper Mississippi Valley zinc-lead district, was in these rocks...barite, and copper minerals were found. Mining in this district ceased in the late 1970s. A branch of the...zircon), particularly in the Wausau area of Marathon County (Falster 1987). Middle Proterozoic quartzites (1 |  | | Journal (article/letter/editorial) | | Alterationand Fluid InclusionStudiesin the Fresnillo District, Mexico: Evidence for a Brine Reservoir and a...Formationof HydrothermalAg-Pb-ZnOrebodies STUART F. SIMMONS EpithermalMineralisation Research Unit,Geology...adulariaoccursin scatteredexposures aroundthe district and indicatesthe former widespreadpresenceof near-neutralpH...aboveblind orebodiesin the southernpart of the district and in outlying exposures andindicatesthe formerpresenceof...0361-0128/91/128.5/1579-23$3.00 15 7 9 1580 STUART F. SIMMONS relatedalterationpatternsare known(e.g.,White |  | | Report (issue) | | DEPOSITS OF THE TAKILMA-WALDO DISTRICT, OREGON INCLUDING THE BLUE CREEK DISTRICT BY PHILIP J. SHENON Contributions..._Location and topography of the Takilma-Waldo district.-__----__----. Geology______..._._...___..____...__--------_-_------_--------___--__________--_ Metabasalt.. _ ________________________________________...production.___________________________________ Mining methods. ___--._-___--_---___-__-..-__..__---__-__-_... ILLUSTKATIONS Page PLATE 9. Index map of southwestern Oregon and northwestern California. _________________ |  | | Journal (issue) | | OREGON GEOLOGY published by the Oregon Department of Geology and Mineral Industries VOLUME 51, NUMBER...NUMBER 6 NOVEMBER 1989 OIL AND GAS NEWS OREGON GEOLOGY Drilling activity at Mist (ISSN 0164-3304) VOLUME...March, May. July. September. and November by the Oregon Department of Geology and Mineral Industries. (Volumes...Governing Board Sidney R. Johnson, Chair . . . . Baker Rooald K. Culbertson Myrtle Creek Donald A. Haagensen...97201, phone. (503) 229-5580. Baker Field Office: 1831 First Street, Baker 97814, phone (503) 5233133. |  | | Report (issue) | | ........................................... 15 Baker Terrane...........................................vicinity..................................... 4 A4. Mining districts in Payette National Forest and vicinity...(1975) Skurla (1974) Mann (unpub. mapping, 1991) OREGON Figure A2. 44Ā°30' 45Ā° 117Ā° 45Ā°30' 116Ā° Cater...terrane (Triassic to Permian) Fore-arc basin rocks of Baker terrane (Mesozoic to Paleozoic) Metamorphosed island-arc...Formation (banded siltite unit) of the Blackbird mining district (Tysdal, 2000; Tysdal and others, 2000). Metaplutonic |  | | Journal (article/letter/editorial) | | Manganese-Barium Mineral Locality in Northern Pittsylvania County, Virginia Downloaded by [McMaster University]...nineteenth-century HutĀ ter iron mine in Pittsylvania County, Virginia, exposed a small dump composed almost...deposit of the Trondheim district in Norway or the Besshi deposit in the Shikoku district of Japan. Background...Background The area around Pittsville in Pittsylvania County, Virginia, was a major iron producer for about...of the nineteenth century. The last major iron-mining operĀ ation in the Pittsville area, the Hutter |  | Smith, Christopher N., Kesler, Stephen E., Blum, Joel D., Rytuba, James J. (2008) Isotope geochemistry of mercury in source rocks, mineral deposits and spring deposits of the California Coast Ranges, USA. Earth and Planetary Science Letters, 269 (3) 399-407 doi:10.1016/j.epsl.2008.02.029 | Journal (article/letter/editorial) | | spring deposits of the California Coast Ranges, USA Christopher N. Smith a,1, Stephen E. Kesler a,ā,...Arbor, MI 48109, USA U.S. Geological Survey, 345 Middleļ¬eld Road, Menlo Park, CA 94025, USA a r t i c l...Production Co., 3737 Bellaire Blvd., Houston, TX 77025, USA. 0012-821X/$ ā see front matter Ā© 2008 Elsevier B...Lake area at The Geysers and in the Sulphur Bank district (Fig. 1B). Mercury deposits in the California...B. Generalized geologic map of the Clear Lake district showing location of deposits and other features |  | | Journal (article/letter/editorial) | | sedimentary manganese deposits, Sierra Nevada, California, USA Marta J.K. Flohr and J. Stephen Huebner U.S. Geological...Geological Survey, MS 959, Reston, FA 22092, USA (Received July 16, 1991; revised and accepted April 24...sedimentary manganese deposits, Sierra Nevada, California, USA. Lithos, 29: 57-85. Laminated to massive rhodochrosite...hydrothermal fluids and seawater. The composition of a metabasalt from the Smith prospect is consistent with those...mine are compositionally distinct from the Smith metabasalt and have alkaline to calc-alkaline affinities |  | | Report (issue) | | _--__._-____.....__...____._.___.__..___ Mineral Mining Co__________________________________________ Missouri...continuity of the lodes as a whole entitle the district to more extensive exploration, both horizontally...REPORT The Boise Basin, one of the most famous mining districts in Idaho because of its large production...the early days, is in the central part of Boise County, Idaho. Its center is about 25 miles in an air...northeast of the State capital (fig. 32). Placer mining 239 240 CONTRIBUTIONS TO ECONOMIC GEOLOGY, 1933 |  | | Report (issue) | | Formation and Aaron Formation of the Virgilina copper district in the western part of the slate belt. The phyllite...with the Hyco Formation of the Virgilina copper district The oldest felsic volcaniclastic unit, very coarse-grained...and Virgilina Formation in the Virgilina copper district, coupled with the observation of copper sulfide-quartz...valleys in western Mecklenburg County and a tiny part of eastern Charlotte County. The map area is for the...areas. Laney (1917) mapped the Virgilina copper district (inch-to-mile scale on a planimetric base) in |  | | Journal (article/letter/editorial) | | diorite. monzonite, plauenite, amphibolite, schist, metabasalt . BOLOARSPY, MICEEL (1950) &tude gbologique et...dolerite. BRAMYAL.L. ALFRED, H. F. HARWOOD, and W. C. SIMMONS (1934) The Chabakonzo and Chitwe granites outcropping...the Karroo dolerite sill and dyke at Paardekop, district Volksrust: Univ. Stellenbosch Annals 22, sec....geology of the country around Filabusi, Insiza district: S. Rhodesia Geol. Surv. Bull. 27, 179 pp. S....geology of the country around the Jumbo mine, Mazoe district: S. Rhodesia Geol. Surv. Bull. 33, 131 pp. S. |  | | Journal (article/letter/editorial) | | Mn-rich rocks from the Hutter mine, Pittsylvania County, Virginia, U.S.A.: Implications for miscibility...transport modelsāWilliam E. Glassley, Ardyth M. Simmons, and James R. Kercher U-Pb ages of secondary silica...flow in the vicinity of Yucca Mountain, Nevada, USAā James B. Paces, Kenneth R. Ludwig, Zell E. Peterman...itabirite-hosted AuāPdāPt mineralization (jacutinga), Itabira District, Minas Gerais, BrazilāR. Kwitko, A.R. Cabral,...the Kupferschiefer of the Lubin-Sieroszowice mining district (SW Poland)āA. Bechtel, R. Gratzer, W. PĆ¼ttmann |  | | Journal (article/letter/editorial) | | metavolcanic sequence is bimodal, containing tholeiitic metabasalt and high-Al metadacite. Trace element contents...determined by INNA (t = trace). (1) greenschistfacies metabasalt; (2) greenschistfacies met&a&t; (3) mafic xenoIitb...(1979): (1) greenschist facies metabasalt; (2) greenschist facies metabasalt; (3) mafic xenolith (FG); (4)...the average REE abundances of the Burditt Lake metabasalt (Table I, items 1, 2) as a starting composition...our discussion. The distribution coefficients of Simmons and Hedge (1978) and Hellman and Green (1979) show |  | | Report (issue) | | Survey, Federal Center, Denver, Colorado 80225, USA Department of Geology, Portsmouth Polytechnic, Portsmouth...Survey, Federal Center, Denver, Colorado 80225, USA Department of Geology, Portsmouth Polytechnic, Portsmouth...Mountains varies from older plagioclase-porphyritic metabasalt through nonporphyritic metadiabase or basaltic...DePaolo and Wasserburg, 1979; Lambert, Unruh, and Simmons, 1982). Differentiation of basaltic magmas produced...(Todd, Schissel, and Irvine, 1979; Lambert and Simmons, 1980; McCallum, Raedeke, and Mathez, 1980; Irvine |  | | Journal (article/letter/editorial) | | (serpentinite (3), metagabbro (1), greenstone (1), and metabasalt breccia (1)) were recovered from the escarpments...serpentinites, one metagabbro, one greenstone, and one metabasalt breccia. METHOD The samples chosen for analysis...Serpentinite Serpentinite Basalt Basalt Greenstone Metabasalt breccia Basalt Basalt Basalt Basalt Basalt Basalt...products. The metabasalt breccia is characterized by fragments of greenschist-facies metabasalt set in veins...km/sec (0.25 kb) to 6.25 km/sec (6.00 kb). The metabasalt breccia has a density of 2.75 gm/cm 3 and a velocity |  | | Report (issue) | | organization is carrying on for the direct advancement of mining interests throughout the country than can readily...GOLD LODES OF THE CARRVILLE DISĀ 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 pubĀ lished, but baggage...written. In November, 1910, another visit to the district was made, but inclement weather handicapped the |  | | Journal (article/letter/editorial) | | Editorial handling: B. Lehmann J. M. A. Hronsky Western Mining Services, Suite 26, 17 Prowse St, West Perth, WA...features at the mineral deposit scale, less commonly district scale, in order to better classify deposit styles...classic low-sulphidation AuāAg deposits (e.g. Simmons et al. 2005), low-sulphidation Au deposits centred...Potassic Lamprophyres Laowangzhai District, Yunnan, China Hillgrove District, NSW, Australia Gold-fertile...province recognised by Sillitoe (2008) in western USA correlates broadly with the inferred extent of the |  | Simpson, Mark P., Gazley, Michael F., Stuart, Alistair G.J., Pearce, Mark A., Birchall, Renee, Chappell, Debra, Christie, Anthony B., Stevens, Murray R. (2019) Hydrothermal Alteration at the Karangahake Epithermal Au-Ag Deposit, Hauraki Goldfield, New Zealand. Economic Geology, 114 (2) 243-273 doi:10.5382/econgeo.2019.4630 | Journal (article/letter/editorial) | | 1987; White et al., 1995; Hedenquist et al., 2000; Simmons et al., 2005; Simpson and Christie, 2019). Alteration...email, m.simpson@gns.cri.nz *Current address: RSC Mining and Mineral Exploration, 93 The Terrace, Wellington...Cross, New Zealand, Simpson et al., 2001; Comstock, USA, Hudson, 2003; Gosowong, Indonesia, Gemmell, 2007;...1983; Henley and Hedenquist, 1986; Reyes, 1990; Simmons and Browne, 2000). In these hydrothermal systems...from deep wells to generate electricity (e.g., Simmons et al., 2016). At shallow levels and A Illite |  | Mao, Jingwen, Zhang, Jiandong, Pirajno, Franco, Ishiyama, Daizo, Su, Huimin, Guo, Chunli, Chen, Yuchuan (2011) Porphyry CuāAuāMoāepithermal AgāPbāZnādistal hydrothermal Au deposits in the Dexing area, Jiangxi province, East ChinaāA linked ore system. Ore Geology Reviews, 43 (1) 203-216 doi:10.1016/j.oregeorev.2011.08.005 | Journal (article/letter/editorial) | | and the Jinshan shear zone-hosted gold deposit. Mining of these deposits began in the Sui and Tang Dynasties...lies in the northeastern part of the Dele ore district (Fig. 2) and is hosted in the Tongchang, Zhushahong...and Fujiawu granitic porphyries and surrounding county rocks (Zhu et al., 1983). These granitic porphyries...and Fujiawu in the Dexing porphyry CuāAuāMo ore district, Northeastern Jiangxi (modiļ¬ed from Zhu et al...systematic ļ¬uid inclusion studies in the Yinshan district area, and recognized that three major types of |  | | Journal (article/letter/editorial) | | s al- technology terranes and the needs of the mining industry? In thisgroup readydiscovered andexploited...andcompressional wavevelocities weredetermined crystal data(Simmons andWang,1971),butmanyeconomi- densities in the...situpressures. Despitetheseshort- tionfromthe Selbaie, mining districts. To keep the problem tractable, the study...Theoreticaldensitiesfrom Hurlbut (1971) References: 1, Simmons andWang(1971);2, thisstudy;3, N. Christensen, pers...(sphalerite-carbonate; pyrite,chalcopyrite, pyrrhotite-metabasalt, metagabbro, serpentinite), it isapparent that |  | | Report (issue) | | the Ashfork (1967a), Picacho Butte (1967b), and Simmons (1967c) quadrangles at 1:62,500. The only digital...metavolcanic rocks range from 2 (meta-rhyolite) to 8000 (metabasalt) 10-6 SI units (Ed deWitt, written commun., 2000)...data from the southeastern Chino Valley, Yavapai County, Arizona: Northern Arizona University Masterās...map of central Yavapai County, Arizona, including the Jerome mining district: U.S. Geological Survey...M.H., 1967c, Reconaissance geologic map of the Simmons quadrangle, Yavapai and Coconino counties, Arizona: |  | | Report (chapter) | | are thought to have been leached from unexposed metabasalt or ultramafic rocks through the circulation of...pointing towards significant gold mining during the Roman-Ptolemaic eras. Mining activities in the area remained...granted to British companies from the year 1902, but mining ceased completely in 1958 (Neubauer 1962). Between...reported ancient dumps along the contact between metabasalt and granodiorite in the southern part of the...porphyry dike, and up to 0.34 ppm in the ferruginous metabasalt. In 1989, Minex Minerals From: Garofalo, P. |  | | Report (volume) | | Meetings. Washington, D. C. American Institute of Mining and Metallurgical Engineers: Contributions, nos...Section of Bulletin, 1933, 1934. New York. See also Mining and Metallurgy. American Journal of Science, 5th...Canadian Institute of Mining and Metallurgy: Transactions, vols. 35, 36; Canadian Mining and Metallurgical...special no. 11 (nos. 1-6). Ottawa, Ontario. Canadian Mining Journal, vols. 54, 55. Gardenvale, Quebec. Carnegie...2), 49, 50. Chapel Hill, N. C. Engineering and Mining Journal, vols. 134, 135. New York. Engineers' Society |
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