 | | Journal (article/letter/editorial) | | Episodic Introduction of Metallic Nanoparticles into Bonanza Epithermal Ores James A. Saunders Department of...Geography, Auburn University, Auburn, AL 36849, USA; E-Mail: saundja@auburn.edu; Tel.: +1-334-844-4884...sulfidation (LS) epithermal deposits in the western USA often show evidence of the former presence of nanoparticle-sized...precious-metal and silica phases in the highest grade (bonanza) ores. Here, nanoparticles are defined to have...naumannite (Ag2Se). Here it is proposed that chalcopyrite also forms nanoparticles in these ores, but |  | | Report (volume) | | Colemanite in Clark County, Nev., by L.F. Noble (published Feb. 23,1922) (C) Bonanza ores of the Comstock...features of the brown hematite ores of western North Carolina, by 'W. S. Bayley (published Oct. 17,1922)...General features of the magnetite ores of western North Carolina and eastern Tennessee, by W. S. Bayley (published...1922)............... (H) Peridotite dikes in Scott County, Ark., by H. D. Miser and C. S. Ross (published.......... (I) Diamond-bearing peridotite in Pike County, Ark., by H. D. Miser and C. S. Ross (published |  | Saunders, James A., Mathur, Ryan, Kamenov, George D., Shimizu, Toru, Brueseke, Matthew E. (2016) New isotopic evidence bearing on bonanza (Au-Ag) epithermal ore-forming processes. Mineralium Deposita, 51 (1) 1-11 doi:10.1007/s00126-015-0623-y | Journal (article/letter/editorial) | | 1007/s00126-015-0623-y LETTER New isotopic evidence bearing on bonanza (Au-Ag) epithermal ore-forming processes James...36849, USA 2 Department of Geology, Juniata College, 1700 Moore Street, Huntingdon, PA 16652, USA 3 ...Williamson Hall, P.O. Box 112120, Gainesville, FL 32611, USA 4 Magma-hydrothermal deposits Research Group, Geological...Geology, Kansas State University, Manhattan, KS 66506, USA consistent with ore textures that indicate physical...Yudovskaya et al. 2006). Detailed textural studies of bonanza epithermal ores have shown, at least locally, that |  | | Report (issue) | | .'.' .., Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie RUTILE GUMMITE...Information Circular 24 Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie Raleigh...copies of this publication may be obtained from: North CarOlina Department of Natural Resources and Community...for the general welfare of the citizens of North Carolina. The Section conducts a number of basic and...Geological Survey Section, P. O. Box 27687, Raleigh, North Carolina 27611. Eldon P. Allen, Chief Geologist FRONT | | | Report (issue) | | Information Circular 24 Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie Raleigh...copies of this publication may be obtained from: North Carolina Department of Natural Resources and Community...Geological Survey Section, P. O. Box 27687, Raleigh, North Carolina 27611. Eldon P. Allen, Chief Geologist i ...FRONT COVER PHOTO Twinned emerald crystal from North Carolina, photo from Smithsonian Institution (slide...viable mineral collecting sites through out North Carolina. Some sites are commercially operated during |  | | Journal (article/letter/editorial) | | describedthe Vermont copperdeposits,particularlythe Ely Mine. W. H. Emroohs 2 and W. H. Weed s have contributed...Eustis, Quebec; the Union and Clegg mines, North Carolina; and Gordonsville, Virginia. A comparative...has also been made of the ore from the "Big Bonanza" Mine, La Touche Island, Alaska. Theobjectof thisstudyhasbeento...and later, pyrrhotire and chalcopyrite. Elsewhere pyrrhotite and chalcopyrite were introduced,the latter...Quarterly, Vol. 4, 219; "The Pyrrhotite of the Ely Mine," En#. and Min. ]our., April •o, •886, 263. 2 , |  | | Journal (article/letter/editorial) | | Geosciences, Auburn University, Auburn, AL 36849, USA Department of Geology and Environmental Earth Science...Science, Miami University, Oxford, OH 45056, USA; burkeml2@miamioh.edu Correspondence: saundja@auburn.edu;...[11]in summarized topic. The discovery of the bonanza Au-Ag deposit in the mid-1980s Nevada, and the...that gold-colloid the topic. The discovery of the bonanza epithermal Sleeper Au-Ag deposit in the mid-1980s...electrum dendrites below) observed in many Tertiary bonanza epithermal ores in northern Nevada, and have been |  | | Report (issue) | | IN NORTH CAROLINA INFORMATION CIRCULAR 29 DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES ...agencies for the general welfare of the dtizens of North Carolina. The Section conducts basic and applied research...Resources, at Post Office Box 27687, Raleigh, North Carolina 27611-7687, or call (919) 733-2423. Jeffrey...Chief Geologist GOLD NORTH CAROLINA IN . by P. Albert Carpenter III NORTH CAROLINA GEOLOGICAL SURVEY INFORMATION...INFORMATION CIRCULAR 29 STATE OF NORTH CAROLINA James B. Hunt, Jr., Governor DEPARTMENT OF ENVIRONMENT |  | | Report (volume) | | ......... North Carolina. .......................................................... North Dakota............................................. South Carolina......................................:..........1888. Branner, J. C., The zinc and lead region of north Arkansas: Arkansas Geol. Survey Ann. Kept, for 1892...Fair edition, 1904. Genth, F. A., Minerals of North Carolina: U. S. Geol. Survey Bull. 74, 1891. Shannon...Catalogue of the mineral localities of South Carolina: South Carolina Geol. Survey, ser. 4, Bull. 2, 1908. Scott |  | | Report (volume) | | State Museum, Albany. North Carolina.. .Dr. Joseph Hyde Pratt, Chapel Hill. North Dakota... .Dr. A. G...... .Prof. Charles W. Brown, Providence. South Carolina.. .Dr. Earle Sloan, Charleston. South Dakota....See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson |  | | Journal (article/letter/editorial) | | 23:14 19 October 2014 Vindicator Mine, Cripple Creek, Teller County, Colorado I n terms of sheer volume...ROCKS & MINERALS the Golden Circle mine at Sorrento and the Cline mine at Hancock, Maine, and from a vaguely...vaguely described locality near Monroe, Fairfield County, Connecticut. A compilation of telluride mineral...Consolidated mine at Dahlonega, Lumpkin County, Georgia; the Barite Hill gold mine in McCormick County, South...South Carolina; as a relatively important ore mineral with altaite, calaverite, coloradoite, krennerite, |  | | Report (issue) | | GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT SAGUACHE COUNTY COLORADO By HORACE B. PATTON 1915.... . . . . . . . . . . . . . . . . . . . . . . Bonanza latite ........ : . . . . . . . . . . . . . . .................................... 69 The Rawley mine......................................... 69 Location.................. . . . . . 69 Rock formations in mine and tunnel................... 74 Vein systems .... . . . . . . . . . . . . . . . . . . . . 79 Chalcopyrite . . . . . . . . . . . . . . . . . . . . . . |  | | Report (issue) | | --------------Cleburne County ----------~----------------- Tallapoosa County --------------------------Alaska...------------------Cochise County -----------------------------Gila County --------------------------------Greenlee...ee County ----------------------------R[aricopa County ----------------------------R[ohave County --...-----------------------------Pima County -------------------------------Pinal County -------------------------------Santa...-------Santa Cruz County --------------------------'ravapai County -----------------------------'ruma |  | | Report (volume) | | ____ Uranium occurrences___________ ________ __ Bonanza district..____________________ ___________________...tests, Upper Uncompahgre mining district, Ouray County, Colo. Page FIGUEE 48. Index map* of Colorado showing...mines tested for radioactivity, Bonanza mining district, Saguache County.__... ______ ______ ___ 400 TABLES...maximum background______ ____ __ ___ _____ 2. Mines or mine dumps in the Red Mountain mining district having...background________ __ ____ __. 3. Mines or mine dumps in the Bonanza mining district having maximum radioactivity |  | | Journal (article/letter/editorial) | | noted Figure 1. Camp Bird mine, level 2, Sneffels district, Ouray County. Raines-Pettem collection,...with another 50 million pounds mined in San Juan County (Henderson 1926). During the twentieth century...are limited to the Red Mountain district in Ouray County. Figure 2. Colorado mineral belt (COMB) with copper...deposits are located outside the COMB mainly in Baca County, in the southeastern part of the state. Precambrian...mounting) from the Cripple Creek district, Teller County. Stone is 4 cm tall. Raines specimen 3266. Ed |  | | Book (volume) | | .......................................346 North Carolina ........................................................................................356 North Dakota ...............................................................................427 South Carolina ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ............................... |  | | Report (issue) | | Professional Paper 169 GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO BY W. S. BURBANK WITH...composition______________ Relation to mineral deposits... ______ Bonanza latite--.__-__---_--_-_________ Distribution and...Gulch____.._____-----Sosthenes Gulch and Antoro mine __..-.-_ Vicinity of Round Mountain ____________...and prospects.__________-_____-_--_-__-___-Rawley mine-----___-_-.-_-------------------Production____________...mme_________________-_____--_-__Underground workings and mine buildings._._ Geologic features._________________________ |  | | Journal (issue) | | Nugget," collected in 1865 at the Grit mine, El Dorado County, California, by Jules Fricot and donated...providing information and photos. The article on North Carolina gold is not intended to be as com prehensive...the subsequent search for specimens, two fine North Carolina thumbnails were found at Har vard and graciously...Harper’s article. John Dysart, Manager of the Reed Gold Mine State Historic Site, sent much additional information...provided a review of gold occurrences in Tuolumne County, Peter Bancroft provides a report on a new specimen |  | | Journal (article/letter/editorial) | | nanoparticles in middle Miocene bonanza epithermal ores from northern Nevada, USA James A. Saunders 1 & Michelle...high-grade gold ores from several middle Miocene bonanza epithermal Au-Ag deposits from northern NV shows...handling: B. Lehmann * James A. Saunders 1 Auburn, AL, USA 2 Department of Geology and Environmental Earth...University, 118 Shideler Hall,, Oxford, OH 45056, USA 3 Department of Geology, Kansas State University...University, 108 Thompson Hall,, Manhattan, KS 66506, USA they must be dispersed in a stable manner in another |  | | Journal (issue) | | VII, pp. 334-338 (quartz after interstices from North 1926, Proc. Acad. Nat. Sci. Phil., LXXVIII,'pp....defined by its matrix. Carolina). Chalcedony after interstices from Chester County, Pa., has been described...after calcite type, also tetrahedrite after chalcopyrite, siderite and rhodochrosite after calcite, albite...albite after adularia, aragonite after witherite, chalcopyrite after sphalerite.) Adsorption' of this kind...the serpentine pseudomorphs from the Tilly Foster Mine, Putnam Co., N. Y., appear to have formed through |  | | Book (volume) | | instance, a single Spodumene crystal from the Etta Mine near Keystone on the east side of the Mount Rushmore...beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds...Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles Eye Tunnel |  | | Journal (article/letter/editorial) | | high-grade base and precious metal stage composed of chalcopyrite-sphalerite-galena-pyrite–polybasite-pearcei...collected from surface exposures and underground mine levels. The mineralogy was determined from polished...locally accompanied by rare sulfides (sphalerite, chalcopyrite, pyrite, galena). The last episode of 0361-0128/98/000/000-00...0361-0128/98/000/000-00 $6.00 the paragenetic sequence, the bonanza stage, is defined by an assemblage of quartz, base...INDONESIA, & NAZAREÑO, PERÚ: SUPERGENE ALTERATION chalcopyrite, pyrite, sphalerite, galena, polybasite-pearceite |  | Tharalson, Erik, Monecke, Thomas, Reynolds, T., Zeeck, Lauren, Pfaff, Katharina, Kelly, Nigel (2019) The Distribution of Precious Metals in High-Grade Banded Quartz Veins from Low-Sulfidation Epithermal Deposits: Constraints from µXRF Mapping. Minerals, 9 (12) 740 doi:10.3390/min9120740 | Journal (article/letter/editorial) | | of Mines, 1516 Illinois Street, Golden, CO 80401, USA; tmonecke@mines.edu (T.M.); lzeeck@mines.edu (L.Z...80202, USA; fluidinc@comcast.net Bruker Nano Analytics, 415 N Quay Street, Kennewick, WA 99336, USA; Nigel...low-sulfidation epithermal deposit, located in Elko County in Nevada, is the largest known Au–Ag epithermal...Between 1998 and 2013, the still-active underground mine produced over 2.4 Moz Au and 32.8 Moz Ag [21]. The...electrum, aguilarite, naumannite, stromeyerite, chalcopyrite, galena, marcasite, pyrite, and sphalerite. |  | | Book | | enter must be obtained to prevent trespass. Old mine workings are dangerous and entering underground...oFtne ato aa Gem Ghd nQkTeane Uva a nes ly ia" mine Ui nrobs inesob cere ts ou ioe tok us 'aaieomolitt...along the Rocky Mountain Front to possibly the North Slope of Alaska. In New Mexico and Colorado, this...exception of the rhodochrosites of the Sweet Home Mine, Alma, Colorado, which were loaned for photography...Rita Area and the Central Mining District, Grant County Burro Mountains Apache No, 2 District Lake Valley |  | | Book (volume) | | .......................................295 North Carolina ........................................................................................302 North Dakota ...............................................................................366 South Carolina ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham |
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