 | | Book | | Bart Cannon 1975 CORD ILLERAN Mercer Island, Washington Lilli liliiiLt' 111? KLi-KlLLLIlrVlIlI Copyright...Cordilleran 18 Holly Hill Drive Mercer Island, Washington 98040 COVER ILLUSTRATION: Amethyst scepter heads...upon milky quartz stems. Denny Mountain area of King County. Specimen from the collection of Cary A. Maykut...publications dealing with the various aspects of Washington State's diverse mineral wealth exist, but none..."Minerals of Washington" represents an attempt to begin such a cata logue. "Minerals of Washington" shall |  | | Journal (article/letter/editorial) | | pots and, exclusive to HS systems, in hyperacidic crater lakes. In contrast, silica sinter and more distal...particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...Silicification, quartz-adulariaillite Quartz, chalcedony, adularia Sulfide abundance Sulfidation-state indicators...Quartz, calcite, manganoan carbonates, rhodonite, adularia Moderate (5–30 vol.%) Tetrahedrite, chalcopyrite...corrosive waters, which can be ponded in hyperacidic crater lakes and mud pots and emitted from hot springs |  | | Report (volume) | | with the STATE MINING BOARD OF OREGON UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1938 For sale...sale by the Superintendent of Documents, Washington, D.C. ------ Price 1.25 CONTENTS Page Abstract__...Mineralized areas and mining districts.____-_--_-----_____-______---_ Bohemia district.._i_-_-__--_---_-...CONTENTS Mineralized areas and mining districts Continued. Bohemia district Continued. Mineral deposits... CONTENTS Mineralized areas and mining districts Continued. Bohemia district Continued. Mines and prospects |  | | Report (volume) | | GEORGE OTIS SMITH, DIRECTOR BULLETIN 594 SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN...NEVADA BY JAMES M. HILL ,,i/ ct, cg -. 1 WASHINGTON GOVERNMENT PRINTING OFFICE 1915 DEPARTMENT...GEORGE OTIS SMITH, DIRECTOR BULLETIN 594 SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN...NORTHWESTERN NEVADA BY JAMES M. HILL WASHINGTON GOVERNMENT PRINTING OFFICE 1915 CONTENTS. Page. Preface...of the ore deposits 2 27 30 Mining districts 2 Hayden Hill, Lassen County, Cal 2 30 30 Location and accessibility |  | | Journal (article/letter/editorial) | | Iwojima is an island ~50 km south of the Nansatsu district that has been active volcanically for at least...acidic solution that leaches rock within the summit crater (leaving a 90–97 wt% SiO2 residue), and forms alunite...low-density magma conduit within 200 m of the summit crater, based on an assessment of muon radiography data...1800s and 1900s (Uto et al., 1983). The acidic crater lake of Yugama (pH ~ 1.5; Kusakabe et al., 2000) is...discharge both to the east and west of the summit crater lake (Kikawada et al., 1993; Musashi et al., 2008) |  | | Report (issue) | | steam-heated environments, such as those at the Tolfa district, Italy and Marysvale, Utah, and numerous modern...zoning. Such acid-sulfate alteration may occur over adularia-sericite type base- and precious-metal ore deposits...Summitville, Colorado; Julcani, Peru and Red Mountain, Lake City, Colorado are characterized by vertical aspect...Red Mountain, CO and Alunite Ridge, UT and over adularia-sericite type deposits as at Cactus, CA. INTRODUCTION...by reconnaissance data on samples from several mining districts and predictions about the origin of the |  | | Journal (article/letter/editorial) | | surfaceoutcrops,the largesteruptivesite being a crater of 1.5 km in diameterwhich formed about 6,060 yrs...yrs ago and is presently occupiedby an acid lake (LakeRotokawa)with a pH • 2. Significantbeddedsulfurdeposits...rdeposits which formed in an earlier crater lake existbeneaththe presentlake. The deep fluidsare dilute...Thermalwatersdischarging on the northeastshoreof the lake are depositinggold oregradearsenicandantimonysu...been transportedinto the environmentbeneaththe crater. It is estimatedthat 1.7 to 3.3 million oz of gold |  | | Report (issue) | | of formation. Analyses of alunite from over 20 mining districts and geothermal fields suggest that the...different origins of alunite in the Marysvale, Utah district. Pickthorn and O'Neil (1985) determined the fractionation...kaolinites: Buckskin Mtn., National district, NV The National district has been well documented by the comprehensive...overlie base- and precious metal veins of the adularia-sericite type with kaolinite-dominated alteration...magmatic hydrothermal alunites: Julcani district, Peru The Julcani district has been described by Petersen et |  | | Report (volume) | | River Altered Area and in the Osceola Mudflow, Washington By David A. John, James J. Rytuba, Roger P. Ashley...River Altered Area and in the Osceola Mudflow, Washington By David A. John, James J. Rytuba, Roger P. Ashley...Osceola Mudflow along the lower White River, Washington ...............................................Mudflow along the White River near Greenwater, Washington ...............................................River Altered Area and in the Osceola Mudflow, Washington Field Guide to Hydrothermal Alteration in the |  | | Report (volume) | | 5808 South Rapp St., Suite 209 Littleton, CO 80120 USA Telephone: (303) 797-0332 FAX: (303) 797-0417 Price... oh tee seareae 203 The Banska Stiavnica Ore District: Relationship between Metallogenetic Processes...Slovakia, and many other deposits (e.g. several mining districts in the Oas-Gutai Mtns., Tokaj Mtns.,...to rich mining cities whose splendor still lasts, and also supported the development of mining technologies...treatise on medieval mining methods by Agricola is based on his experience from these mining districts. In the |  | | Journal (article/letter/editorial) | | (1935) reported the alunite deposit at the Fukata district (Fig. 1), which was the first study of the acid...are the Upper Yugashima Group, Koshimoda Andesite, lake sediment and intrusive rocks. These rock sequences...eastward dip of 10–20°. Mt. Tanaba Fig. 4 Kamo 2.2.2 Lake sediment 0 Acid alteration area Chokuro andesite...volcanic rocks Koshimoda andesite Kano andesite The lake sediment with a maximum thickness of approximately...Iijima and Iwao (1970), who called it the Shibayama Lake Bed. Fault 2.2.3 Koshimoda Andesite Fig. 2 Geological |  | John, David A., Lee, Robert G., Breit, George N., Dilles, John H., Calvert, Andrew T., Muffler, L.J. Patrick, Clynne, Michael A. (2019) Pleistocene hydrothermal activity on Brokeoff volcano and in the Maidu volcanic center, Lassen Peak area, northeast California: Evolution of magmatic-hydrothermal systems on stratovolcanoes. Geosphere, 15. 946-982 doi:10.1130/ges02049.1 | Journal (article/letter/editorial) | | Middlefield Road, Menlo Park, California 94025, USA Mineral Deposits Research Unit, University of British...Denver, Colorado 80225, USA 4 Oregon State University, Corvallis, Oregon 97331, USA 5 Volcano Science Center...Middlefield Road, Menlo Park, California 94025, USA 1 14 figures; 5 tables; 1 set of supplemental files...vertically zoned over 1000 m from shallow zeolite ± adularia through intermediate argillic (smectite-pyrite...Williams, 1993), as observed at Mount Rainier, Washington (USA) (Vallance and Scott, 1997; Finn et al., 2001; |  | | Journal (article/letter/editorial) | | Pliocene El Dorado Low-Sulfidation Epithermal Gold District, El Salvador MATHIEU RICHER, RICHARD M. TOSDAL...epithermal Au-Ag vein system, located within an 84-km2 district in north-central El Salvador, is hosted by volcanic...epithermal veins, and effective basement in the district, consist of a >400-m-thick sequence of basaltic...superimposed volcanic centers. Vein formation in the district occurred in the Pliocene between 4.7 ± 0.2 Ma...based on K-Ar and 40Ar-39Ar plateau ages on vein adularia. Vein formation overlapped with Pliocene felsic |  | | Journal (article/letter/editorial) | | of magmatic fluid and groundwater in high-level adularia–sericite (so-called ‘low sulfidation’ gold–silver)...inclusions in alteration assemblages in the Nansatsu district, Japan, as did Jannas et al. (1999) in alunite...the sulfide assemblages encountered in epithermal adularia–sericite type deposits. Sulfide stage mineral assemblages...hundred meters of rock have been removed by erosion. Mining extended to about 850 m below the present surface...at the paleosurface in the eastern part of the district indicating that mineralization and alteration |  | | Report (issue) | | (10 x 8 cm). (Photo: Wendy St George). Figure 5 Adularia. From fissure in hydrothermally altered rhyolitic...chlorite schis t , Mount Drow ne, Toaroha Survey District , Westland. (13 x 10 cm). (Photo: Wendy St George)...present in nephrite (q.v.) See also Tremolite. Adularia Feldspar group Figure s Found particularly in...vein-filling mineral, and adularia for that replacing plagioclase. Adularia is widespread in the high-temperature...Nicholls & Carmichael 1969, p. 280, anal); Dunedin district, e.g. in phonolite (Marshall 1906a, p. 395; Coombs |  | | Book | | long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described.../960--20/ 5 ONTARIO Bentley Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and |  | | Book | | Bagby US Geological Survey, Menlo Park, California, USA William Bagby received a Ph.D. in Earth Science from...rocks in the Sierra Madre Occidental, Mexico. His mining industry experience includes porphyry copper exploration...B.R. Berger US Geological Survey, Spokane, Washington, USA Byron Berger has been involved in exploration...Zimbabwe). In 1977 he moved to the Institute of Mining Research at the University of Rhodesia (Zimbabwe)...applied research in collaboration with the local mining industry. In 1984 he moved to the University of |  | | Book (volume) | | Society of Resource Geology (formerly The Society of Mining Geologists of Japan) Guidebook Series 1. Geology...published as Guidebook Series of The Society of Mining Geologists of Japan. 1992 PREFACE Extensive...Volcano Meakan volcano, situated on the south side of Lake Akan, is a multiple stratovolcano consisting of...Nakamachineshiri, which resulted in the formation of a large crater. Pyroclastic deposits during this stage consist...craters and occasionally from Nakamachineshiri crater. Rocks of Meakan volcano are mostly pyroxene andesites |  | | Report (volume) | | area UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1985 DEPARTMENT OF THE INTERIOR DONALD PAUL...silver, and gold have been produced from adjacent mining districts, but there is no record of production...Investigations by the Bureau of Mines of claims and mining properties within the study area indicate reserves...WILDERNESS, COLORADO RIO §_RAND~ COUN]Y _____ _ CONEJOS COUNTY 3JC 15 ' \ \ \ 37° \ OO ' - - '\...._ _ _...Continental Divide Trail. The trails connect with several county and U.S. Forest Service roads that approach the |  | | Report (volume) | | 977 'JNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1951 UNITED STATES DEPARTMENT OF THE INTERIOR...of Documents, U.S. Government Printing Office Washington 25, D. C. - Price 55 cents (paper cover) CONTENTS...Union Transactions. Washington. A. I. M. E. Trans.-American Institute of Mining and Metallurgical Engineers...Institute of Mining , and Metallurgy Transactions. Montreal. · Canadian Min. Met. Bull.-Canadian Mining and Metallurgical...Min. J our.-Canadian Mining Journal. Gardenvale, Quebec. Carnegie Inst. Washington Pub.-Carnegie Institution |  | | Conference Paper/Abstract | | suitable for habitation. Common examples are impact crater lakes, both now (e.g., Bosumtwi, Clearwater East...complete evaluation of a hydrothermal system in a crater does not yet exist. Thus, the nature of these systems...craters. Chicxulub. This is an ~170 km diameter crater produced 64.98 ± 0.05 Ma [24]. Anhydrite and quartz...Yucatán-6 borehole [25], ~50 km from the center of the crater, within the peak ring, and near the top of a section...Project in 2000. Manson. This is a 35 km diameter crater produced 73.8 ± 0.3 Ma [24]. Evidence of hydrothermal |  | | Report (volume) | | BULLETIN OF THE UNITED STATES GEOLOGICAL SURVEY WASHINGTON G-UVEltNMENT PRINTING OFFICE 1900 [JOTTED...FOR THE YEA.R 1899 BY FRED BOTJGHTON WEEKS WASHINGTON GOVERNMENT PRINTING OFFICE 1900 CONTENTS....1899. Minneapolis, Minn. American Institute of Mining Engineers: Transactions, Vol. XXVIII, 1899. New...VI, 1899. San Francisco, Cal. California State Mining Bureau: Bulletins Nos. 13,14, and 16,1899. Sacramento...Canada. Canadian Mining Institute: Journal, Vol. II, 1899. Ottawa, Ontario. Canadian Mining Eeview, Vol. |  | | Journal (article/letter/editorial) | | ROCK ALTERATIONS IN THE SEIGOSHI GOLD SILVER MINING DISTRICT, WESTERN PART OF THE IZU PENINSULA, JAPAN NAOTATSU...rock alterations in the Seigoshi gold-silver mining district, western part of the Izu Peninsula, Japan....alterations occur in the Seigoshi gold--silver mining district, in the western part of the Izu Peninsula,...alterations are commonly found in the other Au--Ag mining districts in Japan. 1. Introduction In Japan many...features of the hydrothermal alteration in this district with those o f some active geothermal areas will |  | | Journal (article/letter/editorial) | | activegeothermalsystems Volcanicgascondensates suchasthosein the crater Geothermal systemsin volcanic terrane have a lakesof...Broadlands in a pH increaseanda localshiftinto the adularia where lead hydroxy-carbonate complexesmay be stabilityfield...relatively low salinityin comdepositionof calciteand adularia: parisonwith epithermalbasemetal deposits.In the... or in the stabilityfield of HS-: Calcite and adularia are commonlyobservedin the boilingzonesof geo...Coromandel peninsula, N. Z.: Australasian Inst. Mining MetallurgyConf., May 1980, Queenstown,New Zealand |  | | Report (issue) | | PROFESSIONAL GOVERNMENT PRINTING OFFICE, PAPER 1456 WASHINGTON 1988 DEPARTMENT OF THE INTERIOR DONALD PAUL...- - - - - - - - - - - - - - - - Monarch Geyser Crater - - - - - - - - - - - - - - - - - - Phillips Cauldron...5. Aerial view looking eastward over explosion crater - - - - .. - - - .. - - - - - - - - - - - - - ...- - - - - 19. Looking west-northwest over Nuphar Lake, Porcelain Basin, and the Annex Area - - - - - -...temperatures of identified hydrothermal K-feldspar (adularia), chalcedony, and fJ-cristobalite in research |
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