 | | Book (volume) | | Location Guide for Rock Hounds in the United States SOUTH DAKOTA This northwestern Great Plains state varies...as the continental seas were advancing from the south, the Dakota sandstone represents topset beds, wave...to the fascination of these pegmatites. 437 South Dakota The commercial production of minerals, principally...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 |  | | Journal (article/letter/editorial) | | Socorro, New Mexico 87801 vwlueth@nmt.edu Grant County, New Mexico RONALD B. GIBBS ROBERT M. NORTH Freeport...eastern Grant County, New Mexico, approximately 12 miles east of Silver City, the county seat. The town...activity until it was completely engulfed by the open pit in the 1970s. The deposit is often referred to...magnetite, pyrite, quartz, andradite, epidote, actinolite, chalcopyrite, ilvaite, and others in lesser...obscured due to the angle of the photo. The current open pit extends to the base of the cliff in the photograph |  | | Journal (article/letter/editorial) | | are richer in gold (1.5–4.5 g/t). At the Hannan South mine, the skarns consist of epidote, calcite, chlorite...breccia skarns are composed of multistage epidote, actinolite, albite, magnetite (5%), and minor biotite, calcite...destruction of igneous magnetite by subsolidus actinolite–albite alteration. At the Shea prospect, main-stage...deposits in the Mt. Shea area, mined at Hannan South (0.257 Mt at 5 g/t Au), are poorly understood as...international nomenclature, and related propylitic actinolite and sodic–calcic alteration is described. Particular |  | Melcher, F., Prochaska, W., Raith, J., Thalhammer, O., Mali, H., AlHakim, A., Altenberger, F., Berger, M., Grafinger, S., Hampl, F., Lamprecht, C., Layr, K., Pupp, M., Steiner, T. (2018) Mineral deposits of Lapland: excursion guide of the Montanuniversität Leoben. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, 164. | Journal (article/letter/editorial) | | (northwest), Volgo-Uralia (east) and Sarmatia (south). It represents the largest exposed area of Precambrian...(iron oxide-copper-gold). Day 1 – Geology in the south of Rovaniemi, Finland Stop 1 66.12045°N 25.98728°E...serpentinite-based 81 Figure 5: The view into the former open pit mine of Kemi. ore is a bigger challenge. The...introduction, a viewing platform of the open pit was visited. The open pit is about 200 m deep (Figure 5). Above...area: 7000 ha) and constitutes Europe’s largest open pit with a dimension of 1.1 x 3.0 km and a current |  | | Book | | Electromagnetic methods Geochemical Methods PIT MINING Open pits - Income Expenditures Earnings - Production...Production - Ore reconciliation and Open pits Open pits Density Ore Reserve Calculations Ore Reserves...Reserves Underground Reserves Geostatistics Open Pit Mining UNDERGROUND REFERENCES Chief of the Little, ...Park Cub and Gem deposits Black Cub South Black Cub North OPEN geology Plot of copper assay against...Eagle Zor Open pit ore reconciliation plot 29. Open pit ore reconcili tion plot 30. Open pit ore reconciliation |  | | Thesis/Dissertation | | sodic-calcic alteration contains plagioclase and actinolite. Gold principally occurs as free gold within...the subequant mountain range of Battle Mountain, south of the town of Valmy. The Buffalo Valley deposit...approximately 90 km west of the Carlin trend, 60 km south of the Getchell trend, and 65 km northwest of the...and 1990 Horizon Gold Shares, Inc. operated an open-pit mine and heap leach facility which produced 47...at Buffalo Valley and is exposed in the current pit. For this study, the Newmont practice of separating |  | | Report (issue) | | VA 22092 Colgate University, Hamilton, NY 13346 Open-File Report 87-485 This report is preliminary and...from the roadlog of Thompson (1972). In the Orange County copper district, the stops and descriptions in...Intersection with U.S. Rte 5 at East Thetford, VT. (south). 54.8 Intersection with Lyme Road. 55.1 Cross...Cross Connecticut River. Turn right to head south on 1-89. Exit right. Turn left (east). Turn right...quartz veins of the area. Follow blue flagging south along base of outcrops on right to see several other |  | | Report (issue) | | DISTRICT Washington County, Idaho and IRON ORE DEPOSITS IN THE CLEARWATER DISTRICT Idaho County, Idaho by J...J Hoover Mackin OPEN FILE 47-14 Washington 1947 IRON ORE DEPOSITS OF THE IRON MOUNTAIN DISTRICT,... Washington County, IDAHO CONTENTS Page Summary « * . < 1 Summary of Tonnage Estimates » . 2 Introduction*.../j|^ ^/ Iron Mountain District, w T Washington County, Idaho 9 » and* Index. Mft p. ..... In back pocket...DEPOSITS OF THE IRON MOUNTAIN DISTRICT Washington County, Idaho SUMMARY The iron ore deposits of the Iron |  | | Journal (article/letter/editorial) | | intermediate to felsic dykes. Within the Deakin South open cut, gold mineralization is hosted in brittle±ductile...Exploration and Mining, PO Box 136, North Ryde, New South Wales 1670, Australia e-mail: cyeats@syd.dem.csiro...Jundee±Nimary deposit showing pit outlines and the location of the Deakin South orebody Since the publication...structures. Gold mineralization within the Deakin South orebody, Jundee±Nimary, (Figs. 2 and 3) is hosted...bracket the age of gold mineralization in the Deakin South orebody, and by analogy for the Jundee± 128 Fig |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . . 1 County Listings. . . . . . . . . . . . . . . . . . . .... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 7 Beaver County . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . 7 Box Elder County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 10 Cache County . . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (issue) | | mine, Esmeralda County CALIFORNIA: burnt ore dump, Oceanic mine, San Luis Obispo County TEXAS: Chisos furnace...furnace, Terlingua district, Brewster County The Texan material was used in the initial X-ray analysis...H ) 7 Status: valid Type Locality: Belmont, Nye County Further analysis of the type material showed it...(Laubanite?) Type Locality: near Manhattan, Nye County This species was never recognized by anyone except...Type Localities: NEVADA: Comstock Lode, Storey County U.S.S.R.: Smeinogorski (Schlangenberg), Altai INDONESIA: |  | | Journal (issue) | | mineral localities: the Gold Hill mine, Tooele County, Utah ...........................................Wise The Wagon Wheel Gap fluorspar mine, Mineral County, Colorado .......................................Cairncross The Jan Coetzee copper mine, Namaqualand, South Africa ...........................................The Gold Hill mine is located in western Tooele County, Utah, in the north end of the Deep Creek M ountains...through the Overland Canyon, about 6 to 7 miles south of the present town of Gold Hill. Travelers, who |  | | Report (Issue volume) | | Label the specimens before final storage; if you use open cardboard trays, labels can go with the specimens...the vicinity of the Moose and Harricanaw rivers, south of James Bay. The selenite is transparent and is...opposite the middle of Murray Island. Along the south side of the river, the exposures extend for lt miles...exposed continuously for 6 miles in cliffs along the south bank of the Cheepash River 16 miles from its mouth...and several hundred feet long in limestone at the south end of Shoal Island which lies in the Harricanaw |  | | Report (issue) | | sulphide deposits of the Elizabeth mine, Orange County, Vermont ... . .............. 4l J.F. SLACK, M...sulphide deposits of the Davis mine, Hampshire County, Massachusetts ........... . .... . . .. ........the manganese ores of the Betts mine, Hampshire County, Massachusetts . .. ......... . ....... . , .....of Brunswick No.6 (no. 1, Figure 3) and west and south of the Heath Steele deposits (no. 4, Figure 3)....12 mines are of this type, as is the large fold south of the Orvan Brook deposit (Fig. 3). Farther west |  | | Report (volume) | | silver, mercury, copper, and palladium in Lemhi County, east-central Idaho By George A. Desborough, William...localities (Maple Peak (West Tintic Mountains), south Cherry Creek, and Desert Mountain) are 8,000-10...Mountain contain blocks > 1,000 ft long, whereas, at south Cherry Creek, blocks are as much as 100 ft long...Peak caldera had been previously unrecognized. The south Cherry Creek volcanic rocks may be either intracaldera...the Sevier Desert region roughly along a north-south axis. The Eocene-Oligocene volcanic rocks have traditionally |  | | Book | | where no maps were available. In southern Yuma County he even discovered and named a whole new range...specific mention are the mapping in southern Yuma County, studies on gold lode and placer deposits, work...Trends—Precambrian Northeast Structural Trends— North-South (Meridional) Structural Trends—Front Range Orogen—Wasatch-Jerome...Granitic Intrusions—Intrusive Breccias—The Lavender Pit Ore Body—Limestone Replacement Ore Deposits—Geologic...COPPER DEPOSIT, LONE STAR MINING DISTRICT, GRAHAM COUNTY, ARIZONA. ; by R. F. Rosrnson, Bear Creek Mining |  | Lawrence, D.M., Allibone, A.H., Chang, Z., Meffre, S., Lambert-Smith, J.S., Treloar, P.J. (2017) The Tongon Au Deposit, Northern Côte d’Ivoire: An Example of Paleoproterozoic Au Skarn Mineralization☼. Economic Geology, 112 (7) 1571-1593 doi:10.5382/econgeo.2017.4522 | Journal (article/letter/editorial) | | to NNEstriking reverse faults to the north and south. Ferroan A-type granites and lamprophyric dikes...1, early/distal potassic (biotite-K-feldspar-actinolite) metasomatism; stage 2, prograde clinopyroxene...d’Ivoire, which consists of two open cut pits referred to as Tongon South and Tongon North. Tongon represents...Volcaniclastic units in the vicinity of the Tongon South deposit dip 30° to 50° toward the northwest, but...link N- to NE-striking faults to the north and south. Bedding also swings into an E- to ENEstriking orientation |  | | Report (issue) | | 31 University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs... Majuba Hill Mine, Antelope district, Pershing County. N. Prenn collection. Photograph by J. Scovil....Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper 91 References 467 Contributors...because it consists mostly of public land that is open to collecting. The mineral catalog in this book...Humboldt County and the crystalline quartz collecting area on Petersen Mountain in Washoe County, permission | | | Report (issue) | | 3i University of Nevada Press, Reno, Nevada 89557 USA Copyright© 2004 by Uni versity of Nevada Press Photographs... Majuba Hill Mine, Antelope district, Pershing County. N. Prenn coJlection. Photograph by J. Scovil....Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper MINERAL CATALOG 91 121 Gregory...because it consists mostly ot public land that is open to collecting. The n1ineral catalog in this book...Hurnbo ldt County and the crystalline quartz collecting area on Petersen Mounta in in Washoe County, permission |  | | Journal (issue) | | L>ona L e i c m , ir y Laguna Beach, Cal. 92651 Open Mon.-Sat. 10-5. z r u i e s i nvenue m u . u,...Foord Fluorite from the Pine Canyon deposit, Grant County, New Mexico .....................................Hanson Ilmenite expitaxial on bixbyite from Sierra County, New Mexico .....................................COVER: FLUORITE from the Pine Canyon deposit, Grant County, New Mexico. (See the article on page 47.) The...Virginia Mineral Collection. The displays will be open to the public, and will stand as a lasting tribute |  | | Report (issue) | | Deposits of the Osgood Mountains Quadrangle Humboldt County, Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 431...Deposits of the Osgood Mountains Quadrangle Humboldt County, Nevada I By PRESTON E. HOTZ and RONALD WILLDEN...deposits of the Osgood Mountains quadrangle, Humboldt County, Nevada, by Preston E. Hotz and Ronald Willden...deposits of the Osgood Mountains quadrangle, Humboldt County, Nevada. 1963. (Card 2) 1. Geology-Nevada-Humboldt...II. Title: Osgood Mountains quadrangle, Humboldt County, Nevada. (Series) For sale by the Superintendent |  | | Report (issue) | | (CaBSiO4OH) vesicle filling from a basaltic Houghton County lava flow. Small specks of native copper occur...26 26 27 28 29 Part II GEOGRAPHIC MINERALOGY ACTINOLITE TO ZONOCHLORITE ·······································-...exceptionally fine, twinned analcite crystals from Houghton County ························-··-······-··-········...····· 41 2. Ankerite on siderite from Alpena County ···-··············-··················· 46 3....stalactitic limonite from Negaunee in Marquette County .............................................. |  | Chiaradia, Massimo, Banks, Dave, Cliff, Robert, Marschik, Robert, de Haller, Antoine (2006) Origin of fluids in iron oxide–copper–gold deposits: constraints from δ 37Cl, 87Sr/86Sri and Cl/Br. Mineralium Deposita, 41 (6) 565-573 doi:10.1007/s00126-006-0082-6 | Journal (article/letter/editorial) | | and a magnetite–apatite deposit (El Romeral) from South America. Our data indicate mixing of a high δ37Cl...and a magnetite–apatite deposit (El Romeral) from South America. Since IOCG deposits constitute a variant...2000), situated in the Chilean Coastal Cordillera south of the city of Copiapó, is hosted by Early Cretaceous...Sample PC98014, from level N464 in the former South Pit, is a quartz + sericitised feldspar vein with...from a drill hole in the former Candelaria North Pit, is a quartz vein containing minor K–feldspar, traces |  | | Report (issue) | | Ore Deposits of the St. Lawrence County Magnetite District Northwest Adirondacks New York GEOLOGICAL...PROFESSIONAL PAPER 377 Ore Deposits of the St. Lawrence County Magnetite District Northwest Adirondacks New York...____________________________ Rocks of the St. Lawrence County magnetite district. Metasedimentary rocks and migmatites____...___________________ Origin.._____________________________ South Edwards ilmenite-magnetite prospect____ Ore mic...volume] PLATE 1. Geologic map of St. Lawrence County magnetite district, New York. 2. Bedrock geologic |  | | Report (issue) | | by Rick Johnson , Terry Close2, and Ed McHugh3 1 Open-File Report 98-478 This report is preliminary and...east-central Idaho. Most of the Forest is in Lemhi County; only a small portion falls within Idaho and Valley...quartz monzonite and is being mined by conventional open pit methods. The ore is crushed, put on leachpads...calcareous beds. The ore is also mined by conventional open pit methods; gold is recovered in a 350 ton per day...the Payette on the west, and the Challis on the south. The Challis and Salmon have been administratively |
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