 | | Report (issue) | | Geology and Ore Deposits of the Cuyuna North Range Minnesota GEOLOGICAL SURVEY PROFESSIONAL PAPER...407 Geology and Ore Deposits of the Cuyuna North Range Minnesota By ROBERT GORDON SCHMIDT GEOLOGICAL...1924Geology and ore deposits of the Cuyuna North range, Minnesota. Washington, U.S. Govt. Print. Off....87-91. l.Geology Minnesota Cuyuna North range. 2.Ore-deposits Minnesota Cuyuna North Range. S.Iron ores Minnesota...Minnesota Cuyuna North range. I.Title: The Cuyuna North range, Minnesota. (Series) For sale by the Superintendent |  | | Report (issue) | | GEOLOGY OF THE CUYUNA DISTRICT, MINNESOTA: A PROGRESS REPORT UNIVERSITY OF MINNESOTA MINNESOTA GEOLOGICAL...DIRECTOR BULLETIN 36 The Geology of the Cuyuna District, Minnesota A PROGRESS REPORT BY FRANK F. GROUT...WOLFF, SR. MINNEAPOLIS· 1955 THE UNIVERSITY OF MINNESOTA PRESS PRINTED AT LUND PRESS, INC., MINNEAPOLIS...mines of the Cuyuna district in considerable detail. About 1940 a brief synopsis of Cuyuna geology was...the University of Minnesota. In 1941 Mr. Grout started active field work on the Cuyuna largely in connection |  | | Book | | org/details/midwestgemfossil0000zeit Midwest Gem, Great Minnesota, Fossil and Mineral Trails Lakes States Wisconsin...our knowledge and enjoyment of this great owners, mine and quarry operators and science by collecting....Lake Superior agate ever reported was found in Minnesota, and new species of fossils have been collected...first. The states start with the farthest west, Minnesota, and move in sequence to the farthest east, Ohio...shoreline are east of the Mississippi except for Minnesota, where the Mississippi originates in the northcentral |  | | Journal (article/letter/editorial) | | DISTRICT, ROCKS CENTRAL ROBERT IN THE MINNESOTA CUYUNA • G. SCHMIDT CONTENTS PAGE Abstract ....ABSTRACT The ore-yielding main iron-formation of the Cuyuna district is stratigraphically overlain by approximately300...INTRODUCTION THe. geologyof the North range,Cuyunairon district,Minnesota(Fig. 1), hasbeenstudiedby the...DISTRICT• • •0 • EMILYDISTRICT CUYUNA SOUTH • Duluth • INORTH t•'•,• RANGE •• I"•'• • I \ / Wl...Index map of Minnesotashowinglocationof the North range, Cuyuna district. titania in the mounts normalfor |  | | Book (volume) | | Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...CARTERSVILLE: area barite pitsBarite, Geodes, Goethite, Hematite, Limonite, Iron minerals; area mines, |  | | Report (issue) | | ~-~--- UNIVERSITY OF MINNESOTA lY,IINNESOTA GEOLOGICAL SURVEY G. M. SCHWARTZ. DIRECTOR BULLETIN 34...34 Bibliogr_aphy of Minnesota Geology BY THEODORA G. MELONE AND LEONARD W. WEIS MINNEAPOLIS • 1951...-'- BIBLIOGRAPHY OF MINNESOTA GEOLOGY UNIVERSITY OF MINNESOTA MINNESOTA GEOLOGICAL SURVEY G. M...SCHWARTZ. DIRECTOR BULLETIN 34 Bibliography of Minnesota Geology BY THEODORA G. MELONE AND LEONARD W...W. WEIS MINNEAPOLIS· 1951 THE UNIVERSITY OF MINNESOTA PRESS Acknowledglnents The following bibliography |  | | Book (volume) | | grading to 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods...gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason Cr.⎯fossils; |  | | Book (volume) | | grading to 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip mine⎯pyritized gastropods...gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason Cr.⎯fossils; |  | | Report (issue) | | .......................................... 31 Goethite ................................................calcite, clay minerals, dolomite, glauconite, goethite, gypsum, hematite, limonite (hydrous iron oxides)...collection of geodes from Big Walnut Creek, Putnam County; and many quarry operators for granting us permission...Indians knew of and used Wyandotte Cave in Crawford County (4).2 Ball (1941, p. 39) summarized the various...The Indians found that Wyandotte Cave, Crawford County, Ind., contained two desirable products, a jaspery |  | | Report (volume) | | Ark. Geol. Survey County Min. Rept.; Ann. Rept. -Arkansas Geological Survey, County Mining Report; Annual...Geologia Argentina Bol.. - Direcci6n Nacional de Mine ria y Geolog:la [Argentina], Boletin. 192 CONTRIQ...Water Res. County Rept. -Maryland Department of Geology, Mines, and Water Resources, County Report. Md...Md. Geol. Survey County Rept. -Maryland Geological Survey, County Report. Meddel. om Gr¢nland- Meddelelser...York. Min. World-Mining World. Seattle. Mine and Quarry Eng. -Mine and Quarry Engineering. London. Miner-The |  | | Journal (article/letter/editorial) | | shallow marine Permian and Cretaceous deposits in the north, remnants of fluvial and lacustrine 1 CRC LEME...Mining, Detection Technologies Group, PO Box 136 North Ryde, NSW, 1670, Australia *Corresponding author...potential to assist exploration in the region (e.g. Huntington et al.;17 Mauger and McConachy;24 Mauger et al...Tarcoola Goldfield (South Australia) measure the range of mineralogical change observed from fresh bedrock...II and ASD. PIMA and ASD differ in terms of the range of wavelengths sampled, the bandwidths used, and |  | | Journal (issue) | | d'Ossola, Italy; Lyangara, Uzbekistan; and the Emma Mine, Little Cottonwood District, Salt Lake Co., Utah...News, P.O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-664-2448 • 3 E-mail: lream@comtch.iea...bentonite clay. colored bentonite clay. These nodules range from cm size to 12 inches (30 cm) or more. Many...some very unusual forms spanning a fascinating range of crystallization that may be present to some degree...top) arc more typically in the micro to mm size range. with fonns typically sufficiently complex to require |  | | Journal (article/letter/editorial) | | surrounding forested area. Left: Dogtooth Peak, north of the summit. MARK I . JACOBSON 575 Market Street...beauty than for their peg matites. But in Fresno County at elevations near 10,000 feet there are miarolitic... The Dogtooth Peak pegmatites are located just north and northwest of Dogtooth Peak in section 16, T9N...T9N R27E of the United States Geological Survey Huntington Lake 15' quadrangle. The highest concentration...is within an area bounded by Little Lake in the north, Dog tooth Peak in the southeast, and Rock Lake |  | | Journal (article/letter/editorial) | | Mason, and Jon Huntington CSIRO Earth Science and Resource Engineering, P.O. Box 136, North Ryde, NSW 1670...compositional information on nickel laterites exposed in mine bench walls as a routine sampling method for ore-grade...applied to spectral reflectance data acquired on mine bench walls to derive the chemical compositions...al., 2011; Haest et al., 2012a, b). A prototype mine pit scanning †Corresponding author: e-mail: kyang389@gmail...com) coupled with a rotation mirror and a laser range finder, was one such development tested during the |  | | Journal (issue) | | Number Three Articles The Tonopah-Belmont mine, Maricopa County, A rizona by G. B. Allen & W. Hunt 139...........221 COVER: ANGLESITE from the Touissit mine, Morocco. The large crystal measures 4.5 cm. This...Henry Truebe, Chairman (Dallhold Resources, 2002 North Forbes Blvd., Tucson, AZ 85745), with your topic...Chichibu mine” (by Kuniaki Kato and Hidemichi Hori), “ Collecting report: Hikagezawa gold mine, Shizuoka...Avenue Sun City, Arizona 85351 he Tonopah-Belmont mine is a micromounter’s paradise. An un common suite |  | | Journal (volume) | | of the Pic de Fon Iron Oxide Deposit, Simandou Range, Republic of Guinea, West Africa I. L. Cope, J....Brief History of High-Grade Iron Ore Mining in North America (1848-2008) Philip E. Brown 361 Part IV...four sheets at a 1:100,000 scale in the Espinhaço Range and has worked widely in Brazil and shield South...Mineração Santa Blandina, and Amarillo Gold, on a broad range of commodities, including gold, diamonds, iron,...is professor of economic geology and teaches a range of undergraduate and graduate classes, many with |  | | Book (volume) | | locations in Idaho, lowa, Kansas, Minnesota, Missouri, Montana, Nebraska, North Dakota, — ; Oregon, South...Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and...QUANDRANT Idaho, Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska, North Dakota, Oregon, South Dakota...Backwaters Blue Jacket The King Snake The Owls of North America The Conquerors Savage Journey The Court-Martial...of Terror The Frontiersmen The Wading Birds of North Gateway to Empire America The Great Auk The |  | Tappert, M., Rivard, B., Giles, D., Tappert, R., Mauger, A. (2011) AUTOMATED DRILL CORE LOGGING USING VISIBLE AND NEAR-INFRARED REFLECTANCE SPECTROSCOPY: A CASE STUDY FROM THE OLYMPIC DAM IOCG DEPOSIT, SOUTH AUSTRALIA. Economic Geology, 106 (2) 289-296 doi:10.2113/econgeo.106.2.289 | Journal (article/letter/editorial) | | , Gallie et al., 2002; Keeling et al., 2004; Huntington et al., 2006; Kupsch and Catuneanu, 2007; Mauger...detrimental if high turnover is required—such as at mine sites or in large drilling programs. In addition...rough approximations. Olympic Dam is located 560 km north of Adelaide, South Australia, near the town of Roxby...containing ferric iron (Fe3+), like hematite, goethite, and lepidocrocite, produce absorption features...fine-grained varieties of iron hydroxides, such as goethite and lepidocrocite (Cornell and Schwertmann, 2003) |  | Duuring, Paul, Hagemann, Steffen G., Laukamp, Carsten, Chiarelli, Laura (2019) Supergene modification of magnetite and hematite shear zones in banded iron-formation at Mt Richardson, Yilgarn Craton, Western Australia. Ore Geology Reviews, 111. 102995 doi:10.1016/j.oregeorev.2019.102995 | Journal (article/letter/editorial) | | hypogene quartz by goethite, and further oxidation of magnetite to martite. Resultant goethite–hematite ore...minerals in mafic igneous rocks, intense supergene goethite–hematite–kaolinite alteration, thinning of primary...banded iron-formation, iron, magnetite, hematite, goethite, supergene, hypogene Introduction Western Australia...magnetite–martite, crystalline hematite–martite, and goethite–hematite ores. They are products of repeated hydrothermal...zones commonly cut and modify magnetite ores. Goethite–hematite ores are the product of more recent alteration |  | | Journal (article/letter/editorial) | | of this channel iron deposit comprises chiefly goethite (both vitreous and ochreous forms) with lesser...Al2O3); hematite/goethite ratio (RMSE 9.0 wt % goethite); vitreous versus ochreous goethite (not easily measured...reflectance measured in the 400 to 2,500 nm wavelength range. A variety of methods can be used to calculate mineral...concentration of Al (mostly in Al clays and substituted in goethite) and Si (e.g., silica, clays, etc.) in the final...ore resource characterization by differentiating goethite and its subtypes (vitreous and ochreous) from |  | | Journal (issue) | | by W. E. Wilson Pink amethyst from the El Choique mine, Patagonia, Argentina ............................Oteiza The Copper World and Mohawk mine, Northeastern San Bernardino County, California ....................COVER: WULFENITE, 11.5 cm, from the Jianshan mine, Ruoqiang County, Kuruktag Mountains, Bayinguoling Autonomous...with Mimetite, 1.7 cm, from the Rowley mine, Maricopa County, Arizona. Wish Wang collection and photo...$324/three years, (Canada) $186/one year, (outside USA other than Canada) $265 for one year Subscription |  | | Journal (issue) | | companion to the Three Sisters in the central Cascade Range, shows the east cirque which contains a small lake...fossil plants of the John Day Formation, Wheeler County, Oregon by Steven R. Manchester, Florida Museum...slope of Iron Mountain east of Clarno, Wheeler County, Oregon. The Whitecap Knoll locality is closely...Day Formation in the Gray Butte area of Jefferson County, but the precise ages are difficult to determine...John Day Fossil Beds National Monument in Wheeler County, Oregon, provides a rare opportunity to examine | | | Journal (issue) | | by WE. Wilson Pink amethyst from the El Choique mine, Pata gonia, Argenti na ..........................2020 The Copper World and Mohawk mine, Northeastern San Bernardino County, California ....................COVER: WULFENITE, 11.5 cm, from the Jianshan mine, Ruoqiang County, Kuruktag Mountains, Bayinguoling Autonomous...with Mimetite, 1.7 cm, from the Rowley mine, Maricopa County, Arizona. Wish Wang collection and photo...$324/three years, (Canada) $196/one year, (outside USA other than Canada) $275 for one year Subscription |  | Swayze, G. A., Clark, R. N., Goetz, A. F. H., Livo, K. E., Breit, G. N., Kruse, F. A., Sutley, S. J., Snee, L. W., Lowers, H. A., Post, J. L., Stoffregen, R. E., Ashley, R. P. (2014) Mapping Advanced Argillic Alteration at Cuprite, Nevada, Using Imaging Spectroscopy. Economic Geology, 109 (5) 1179-1221 doi:10.2113/econgeo.109.5.1179 | Journal (article/letter/editorial) | | near-infrared (VIS-NIR or VNIR-SWIR) 0.4- to 2.5-μm range is an effective tool for evaluating subtle patterns...100-km-wide NW-trending depression extending 800 km north from the Las Vegas area to south central Oregon...arcuate northeast to westtrending range known as the Cuprite Hills. This range and the nearby Goldfield Hills... 40Ar/39Ar dating of a sample collected 3.5 km north of the western center gives an age of 26.99 ± 0...margin just north of the eastern center (Fig. 3A; Swayze et al., 1997). Immediately north of the western |  | Schroeder, Paul A, Melear, Nathan D, Bierman, Paul, Kashgarian, Michaele, Caffee, Marc W (2001) Apparent gibbsite growth ages for regolith in the Georgia Piedmont. Geochimica et Cosmochimica Acta, 65 (3) 381-386 doi:10.1016/s0016-7037(00)00541-x | Journal (article/letter/editorial) | | Copyright © 2001 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/01 $20.00 ⫹ .00 Pergamon...University of Georgia, Athens, Georgia 30602-2501, USA Department of Geology, Perkins Hall, University of...of Vermont, Burlington, Vermont 05405-0122, USA 3 Lawrence Livermore National Laboratory, 7000 East Ave...Ave., Livermore, California 94550-9234, USA 2 (Received December 29, 1999; accepted in revised form...surface (A- and B-horizon) 14C-gibbsite model ages range from 2100 to 4200 years. Quartz has acquired 26Al |
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