 | | Report (volume) | | 723 GEOLOGY AND ORE DEPOSITS OF THE MANHATTAN DISTRICT NEVADA BY HENRY G. FERGUSON WASHINGTON GOVERNMENT...Ordovician rocks________________'. __________________ Toquima formation__________________________ Permian (?)... Bald Mountain lake beds member_______________ Quartz latite member_____ ________________ Maris rhyolite__...Deep-seated deposits___ __ ____________ __ __ 136 Nemo mine_____ ____________~~___________ 136 Shallow...prospect____________________,.____ 136 Buckeye prospect Wall mine _______________________________ Maris mine_ __ _ |  | | Report (issue) | | PLACER DEPOSITS OF THE MANHATTAN DISTRICT, NEVADA. By HENRY G. FERGUSON. FIELD WORK AND ACKNOWLEDGMENTS...study of the geology and ore deposits of the Manhattan district, Nev. The placer deposits offered problems... Unfortunately in the present state of mining in the district these deposits could not be examined as...of the problems involved in the study of the Manhattan placers. The writer desires particularly to acknowledge...Mr. L. F. Clar, a veteran placer miner of the district, for much valuable information as well as for |  | | Report (issue) | | Assessment of the Tonopah 1° by 2° Quadrangle, Nevada by Greta J. Orris and Frank J. Kleinhampl U.S...provides basic and interpreted geologic data for long-range national mineral resource policy and aids in Federal...Tonopah 1° x 2° quadrangle, Nevada, covers over 19,000 km2 in central Nevada. The region is largely dominated...north-trending valleys and mountain ranges of the Basin and Range physiographic province. Exposures of bedrock are... Location of the Tonopah 1° by 2° quadrangle, Nevada x / 7 v* Most of the granitoid rocks are |  | | Report (volume) | | and Gold Depo~its, Tonopah.l,0 X,2° Qu.adrangle, Nevada~ Description and Applications to Exploration~ ...and gold deposits, Tonopah 1° x 2° quadrangle, Nevada: description and applications to exploration I...3:2077 1. Gold mines and mining-Nevada-Tonopah region. 2. Gold mines and mining-Nevada-Tonopah region. I. Title................................. . Northumberland Mine ................................................................................... . Wall Canyon Mine ............................................... |  | | Report (issue) | | Terranes Part I Geographic Distribution of Gold Mining Regions and Types of Deposits in the United States...EDWIN W. TOOKER Patterns of Gold Mineralization in Nevada and Utah By WILLIAM C BAG BY Gold-Silver Deposits...bibliographies. Contents: Geographic distribution of gold mining regions and types of deposits in the United States...Edwin W. looker Patterns of gold mineralization in Nevada and Utah / by William C. Bagby Gold-silver deposits...Redden and Gregory McN. French. 1. Gold mines and mining United States. 2. Gold deposits United States. |  | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA Peer Hen By CASTOR oan eGORY.C.oFER DOCK NEVADA AND BUREAU... UNIVERSITY Reno & Las Vegas OF NEVADA PRESS GEOLOGY Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs...otherwise noted Map of Mining Districts and significant mineral occurrences of Nevada by Nevada Bureau of Mines...Cataloging-in-Publication Data Castor, Stephen B, Minerals of Nevada / Stephen B. Castor and Gregory C. Ferdock.— Ist | | | Report (issue) | | MINERALS OF NEVADA MINERALS OF NEVADA STEPHEN B. CASTOR and G R EGOR Y C . F E R D OC K l NEVADA BUREAU...association with the UNIVERSITY OF NEVADA PRESS Reno & Las Vegas Nevada Bureau of Mines and Geology Special...University of Nevada Press, Reno, Nevada 89557 USA Copyright© 2004 by Uni versity of Nevada Press Photographs...Districts and si gnificant minernl occurrences of Nevada by Nevada Bureau of Mines and Geology All rights reserved...-Publ ication Dat,i Castor, Stephen B. Minerals of Nevada/ Stephen B. Castor and Gregory C. Ferdock.- rst |  | | Report (volume) | | Metadiabase sills in Negaunee Iron-formation near National Mine, Mich., by George C. Simmons ___________________...Lake sill ______________________________ National Mine sill _____________________________ Ash-flow stratigraphy...Pony Trail Group in the Cortez Mountains, Eureka County, Nev., by J. Fred Smith, Jr ________________________...Mountains Formation in the Pine Valley quadrangle, Nevada, by J. Fred Smith, Jr ________________ References...metadiabase sills in Negaunee Iron-formation near National Mine, Mich _ 7. Columnar sections of metadiabase sills |  | | Report (volume) | | Mineral resources locatable commodities 50 History of mining and exploration 50 Metals 51 Industrial minerals...stratabound deposits 57 Banded iron-formation (A) 57 Quartz-pebble conglomerate deposits (B) 61 Syngenetic...114 Miscellaneous commodities 115 Utilization of mine tailings 115 Aluminum 115 Bentonite 115 Mineral...National Forest FIGURES 5-14. Geologic maps: 5. Nemo area 14 6. Medicine Mountain area 16 7. Bear Lodge...resource potential map for locatable commodities: 15. Nemo area 58 16. Rochford area 62 17. Keystone area 64 |  | | Report (issue) | | middle Precambrian Estes Conglomerate, Nemo District, Lawrence County, South Dakota A preliminary report...Location, accessibility and mining history General geology Black Hills Nemo District Stratigraphy Little Elk...core of the Black Hills showing location of Nemo district and Estes and Greenwood areas 5 Explanation...middle Precambrian Estes Conglomerate, Nemo District, Lawrence County, South Dakota A preliminary report...Estes Conglomerate, which is exposed in the Nemo District on the northeastern flank of the Black Hills |  | | Journal (article/letter/editorial) | | recently dug nuggets and crystal gold in white quartz—perhaps as much as $100 million dollars’ worth...Sutter, a Swiss immigrant who had come to the district in 1839 and had named it Nueva Helvetia (“New...from alluvial workings, but crystalline gold in quartz came only from vein mines such as the one depicted...through 1853. John Little Moffat had operated a gold mine in North Carolina, so the lure of the precious metal...popular, but surviving ingots with their stamp range from $9.43 to $264. They soon began producing a |  | | Journal (article/letter/editorial) | | Province, USA Robert S. Houston Geology Department, Universityof Wyoming, Laramie, WY 82070, USA (Received...near plate margins of the Archean Wyoming Province, USA. In: G. Gadl and K. Schulz (Editors), Precambrian...Mineral deposits include uranium-thorium-gold bearing quartz pebble conglomerate deposited during rifting, stratiform...clastic succession contains uranium and goldbearing quartz pebble conglomerate formed during rifting. The...Department, University of Wyoming Laramie, WY, 82070, USA. 0301-9268/92/$05.00 margin is exposed in the Sierra |  | Frei, Robert, Dahl, Peter S., Frandsson, Mie Munck, Jensen, Lizette Apel, Hansen, Thomas Rintza, Terry, Michael P., Frei, Karin M. (2009) Lead-isotope and trace-element geochemistry of Paleoproterozoic metasedimentary rocks in the Lead and Rochford basins (Black Hills, South Dakota, USA): Implications for genetic models, mineralization ages, and sources of leads in the Homestake gold deposit. Precambrian Research, 172 (1) 1-24 doi:10.1016/j.precamres.2009.03.004 | Journal (article/letter/editorial) | | and Rochford basins (Black Hills, South Dakota, USA): Implications for genetic models, mineralization...Geology, Kent State University, Kent, OH 44242, USA d Geology and Geological Engineering Department,...East Saint Joseph Street, Rapid City, SD 57701, USA b a r t i c l e i n f o Article history: Received...coeval with latest-stage, semibrittle shears and quartz veins that crosscut Homestake ore bodies, has yielded...mineralization event recognized in the Homestake Mine area. Like the Precambrian galena leads, the leads |  | | Journal (article/letter/editorial) | | Ridge Middle Fork of the Snoqualmie River King County Washington RICK DILLHOFF PO Box 2090 Issaquah...exceptional quartz specimens found in King County, Washington. Only two King County quartz localities...produces beautiful amethyst scepter groups and quartz specimens with Japan-law twins that reach 30 cm...The Spruce claim is most famous for pyrite and quartz combinations, sometimes with associated ankerite...marketplace. Here we introduce another King County amethyst scepter and quartz twin locality, the Purple Hope No |  | | Report (issue) | | observations and density logs, Nevada Test Site and Hot Creek Valley, Nyo County, Nev., by D. L. HealeY---...Iron deposits of the Estes Creek area, Lawrence County, S.Dak., by R. W. BayleY----------------------...--High-calcium limestone deposits in Lanc~ster County, southeastern Pennsylvania, by A. E. Becher and...mineral potential of the Adobe Range, Elko Hills, and adjacent areas, Elko County, Nev., by K. B. Ketner--...the White Knob Limestone (Mississippian), Custer County, Idaho, by Betty Skipp and B. L. Mamet-------- |  | | Journal (article/letter/editorial) | | conspicuousmetacrysts of magnetite in the iron formation of the Nemo region of the Black Hills attracted the writer's...Meracnysrs In the iron ores of the Lake Superior district magnetite crystals are not infrequently larger...somewhat schistose Soudan formation of the Vermilion Range as shown by Gruner.? 1 Becke, F., Compt. Rend.,...martite ore bodies and magnetites of the Mesabi range : Econ. Geol., v ol. 17, Plate Id, 1922. 6 Schwartz...Schwartz, G. M., New ore of the east Mesabi range: Eng. and Min. f ow., vol. 116, p. 412, fig. 8, 1923. 7 |  | | Report (volume) | | ....................................... 102 District of Columbia ............................................................................ 187 Nevada..................................................to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to...exhausted by mining or quarrying. Deposits of minerals that are widely distributed, such as quartz and calcite...because they occur in sufficient quantity to warrant mining for their usual products, but because they furnish |  | | Report (issue) | | San Isabel and White River National Forests Lake County Land Exchange Offer (Iocmin40) ......................... 47 White River National Forest Dillon District Land Exchange Joint Venture (Iocmin38) .........mines and prospects and locations of Parcels A-D. Mine and prospect locations from USGS (1998a,b) .......National Forests Lake County Land Exchange Offer 1. Exhibit A: Property that Lake County will consider exchanging...National Forest Dillon District Land Exchange Joint Venture 1. List of Summit County Tax Default Lands (for |  | | Journal (article/letter/editorial) | | University Auburn, Alabama 36849-5305 COPPER RAY MINE, PINAL COUNTY, ARIZONA Downloaded by [University of Regina]...most notably those in the western mining states and the copper district of Michigan’s Keweenaw Peninsula...were found in a number of locations in the Bisbee district, Arizona (Graeme 1981), including crystals up...shaft, arborescent groups from the Copper Queen mine, and even postmining growths on old timbers in the...include the New Cornelia pit, Pima County, and the Ray mine in Pinal County. Masses and sheets of crystalline |  | | Journal (article/letter/editorial) | | iron-formation stratigraphy,however, differ greatly from one range to another; it is likely that each area of iron-formation...contemporaneous sediments. The iron-formations range in thicknessfrom about 100 feet to more than 2,000...content of unoxidized rock typically is in the range of 25 to 35 percent. Beds of iron-formation as much...iron-formationin the Lake Superiorregionis in the Iron River district,where a 50foot bed containing35 to 40 percentpyrite...highly metamorphosed and deformed. Magnetite and quartz are the dominantconstituents. Lithologic associations |  | | Report (volume) | | Mineralization of Precambrian Rocks in the Galena-Roubaix District, Black Hills, South Dakota \ ( By R. W. BAYLEY...1. Geologic map of the Galena-Roubaix district, Lawrence County, Black Hills, South Dakota.________________...Geological Survey diamond-drill hole 1, Galena-Roubaix district.____________ ra Ell CONTRIBUTIONS TO ECONOMIC...GALENA-ROUB AIX DISTRICT, BLACK HILLS, SOUTH DAKOTA ByK.W.BAYLEY ABSTRACT The Galena-Roubaix district is underlain...periods of folding, are characteristic of the district. The oldest exposed rocks, previously mapped as |  | | Report (volume) | | as the principal commodity or as a byproduct of mining other metals, based on a review of worldwide information...copper-arsenic-antimony (22a) Gold-bearing skarns (?) Epithermal quartz-alunite gold (25e) Other hydrothermal deposits:...(27a) Kuroko massive sulfide (28a) Low-sulfide gold-quartz veins (36a) Polymetallic veins (22c) Residual or...greenstone belts Residual or placer deposits: *Quartz-pebble conglomerate uranium-gold (29a) Magmatic...descriptive models were based on a single deposit or district and therefore lacked grade-tonnage distributions |  | | Report (volume) | | it helpful to refer to Survey Bulletin 507, "The mining districts of the western United States," and to...exhausted by mining or quarrying. Deposits of minerals of wide distribution, such as quartz and calcite...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...E. H. Barbour, University of Nebraska, Lincoln. Nevada...........Dr. W. S. Tangier Smith, Berkeley, Cal...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |  | | Journal (article/letter/editorial) | | a member of the scheelite-powelliteseries from Nevada and its neighboring states were collected for mineralogical...variable mineralogy are the major contactrock-type; quartz and calcite are the commonvein constituentswith... 682 L. C. HSU AND P. E. GALLI the border of Nevada and Utah, across southern Arizona into New Mexico...im- portant type of occurrence, particularlyin Nevada, althoughsomecontact-metalomaticdepositssuch as...the state of Nevada. Sample Distribution and Description The specimens from the Oreana mine represent |  | | Book | | Heights mine, of crystals as Roger Caillois (1913-1978) of Weardale, Co. Durham. Giant quartz crystals...Brazil) bringing a quartz crystal out of a quarry 5 C R Y S T A L S Calcite, Bigrigg mine, Egremont, Cumбria...of lava and i f the cooling is slow and uniform quartz crystals of varying sizes grow within these cavities...leads t o concentric layers of microcrystalline quartz within the cavity. This variety o f silica is known...and as growth becomes slower we find wellformed quartz crystals on finer-grained layers. We know that |
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