 | | Report (issue) | | and Ore Deposits of the Iron River-Crystal Falls District, Iron County Michigan GEOLOGICAL SURVEY PROFESSIONAL...of the Michigan Department of Conservation PAPER 570 Geology and Ore Deposits of the Iron River-Crystal...River-Crystal Falls District, Iron County Michigan By H. L. JAMES, C. E. BUTTON, F. J. PETTIJOHN, and K. L...cooperation with the Geological Survey Division of the Michigan Department of Conservation UNITED STATES GOVERNMENT..._______ Greenstone in the Hemlock FormationBird Iron-Bearing Member.._________ Thickness and relations |  | | Report (issue) | | GEOLOGY OF THE CENTRAL PART OF THE IRON RIVER DISTRICT IRON COUNTY, MICHIGAN By Carl E. Button Prepared with...cooperation of the Geological Survey ]>ivision Michigan Department of Conservation UNITED STATES DEPARTMENT... GEOLOGY OF THE CENTRAL PART OF THE IRON RIVER DISTRICT IRON COUNTY, MICHIGAN By Carl E. Dutton CONTENTS Page................ Footwall strata.................. Iron-formation.................. Hanging-wall strata...in the south-central part of Iron River district, Iron County, Michigan............................. |  | | Report (issue) | | MAGNETIC SURVEY AND GEOLOGY OF THE STAGER AREA, IRON COUNTY MICHIGAN By S. E. Good and F. J. Pettijohn Prepared...cooperation of the Geological Survey Division Michigan Department of Conservation UNITED STATES DEPARTMENT... MAGNETIC SURVEY AND GEOLOGY OF THE STAGER AREA IRON COUNTY, MICHIGAN By 8. E. Good and F. J. Pettijohn CONTENTS...1. 2. Geologic map of the Stager area, Iron County, Michigan...........................................pocket Magnetic map of the Stager area, Iron County, Michigan. In two parts. (This map shows the magnetic |  | | Report (issue) | | 1950 PROGRESS OF GEOLOGIC WORK IN IRON AND DICKINSON COUNTIES, MICHIGAN By Carl E. Button PREPARED IN COOPERATION...COOPERATION WITH THE GEOLOGICAL SURVEY DIVISION MICHIGAN DEPARTMENT OF CONSERVATION UNITED STATES DEPARTMENT... PROGRESS OF GEOLOGIC WORK IN IRON AND DICKINSON COUNTIES, MICHIGAN By Carl E. Button PREPARED IN COOPERATION...COOPERATION WITH THE GEOLOGICAL SURVEY DIVISION MICHIGAN DEPARTMENT OF CONSERVATION CONTENTS Page Introduction..................... Program in Iron County ...................... Iron River-Crystal Falls district'. |  | | Report (issue) | | Stratigraphy of Pre-Keweenawan Rocks in Parts of Northern Michigan GEOLOGICAL SURVEY PROFESSIONAL PAPER 314-C Prepared...cooperation with the Geological Survey Division, Michigan Department of Conservation Stratigraphy of...of Pre-Keweenawan Rocks in Parts of Northern Michigan By HAROLD L. JAMES SHORTER CONTRIBUTIONS GEOLOGICAL...cooperation with the Geological Survey Division, Michigan Department of Conservation UNITED STATES GOVERNMENT...group______------___ Dunn Creek slate__________ Riverton iron-formation ______ Hiawatha graywacke.________ Stambaugh |  | | Report (issue) | | GEOLOGY OF THE NORTHERN PART OF THE IRON RIVER DISTRICT IRON COUNTY, MICHIGAN By H. L. James and C. E. Dutton...COOPERATION WITH THE GEOLOGICAL SURVEY DIVISION MICHIGAN DEPARTMENT OF CONSERVATION UNITED STATES DEPARTMENT...Siltstone-sericitic slate oo Black graphitic slate • . Iron-formation Hanging-wall strata Magnetic ironstone...Generalized geologic map of the northern part of the Iron River district • . . • • In pocket z. Columnar...stratigraphic chart for the northern part of the Iron River district • • • . • • • . . . . . . . . • |  | | Report (issue) | | GEOLOGY OF THE NORTHERN CRYSTAL FALLS AREA IRON COUNTY, MICHIGAN By F. J. Pettijohn Prepared with the cooperation...cooperation of the Geological Survey Division Michigan Department of Conservation UNITED STATES DEPARTMENT...GEOLOGY OF THE NORTHERN CRYSTAL FALLS AREA IRON COUNTY, MICHIGAN By F. J. Pettijohn REPRINTED 1958 Washington...Greenstones.............. Footwall strata ............ Iron-formation ............ Hanging-wall strata. ....................... Stratigraphy ................ Iron-formation ............ Breccia-graywacke bed .. |  | | Journal (article/letter/editorial) | | Geologyand Mineralogy The Llniversity of Michigan, Ann Arbor, Michigan. Aesrnlcr Two contrasting swarms of...quartz and amazonite crystals, zircon, biotite, siderite, and minor topaz, allanite, cassiterite and genthelvite...Department of Geology and Mineralogy, The University of Michigan. 299 3OO Z. B. GROSSAND D. WM, HEINRICI.I...Rackham Schoolof Graduate Studies,The University of Michigan, N.S.F. Institutional Grant No. 36. Prrrs PBax...5 cm in diameter associated with smoky qrartz. Siderite and hematite commonly coat the cavity crystals |  | | Report (issue) | | AND SOUTHEASTERN PARTS OF THE IRON RIVER DISTRICT IRON COUNTY, MICHIGAN By Harold L. James and Kenneth...cooperation of the Geological Survey Division, Michigan Department of Conservation WASHINGTON, D. C....AND SOUTHEASTERN PARTS OF THE IRON RIVER DISTRICT. ffiON ·COUNTY, MICHIGAN By Harold L. James and Kenneth...• • • • • • Footwall strata..................... Iron-f'orma tion. • • • • • • • • • • • • • • • • • •...w••••••• Section 24, T. 43 N., R. 35 w....... Spies mine area ( EisEt) •••••• ·• • • .Swt· sec. 24.. • • |  | | Report (issue) | | Balmat mine, N. Y. Chromite-chromium ore, Washington Zinc ore, Friedensville, Pa. Banded iron-formation...Concentrating-grade Iron Resources in the Negaunee Iron-formation, Marquette District, Michigan By W. F. CANNON...and economic potential of subeconomic resources of iron in an important active mining district 3 UNITED...concentrating-grade iron resources in the Negaunee Iron-formation, Marquette District, Michigan. (Geological...Bibliography: p. Supt. of Docs, no.: I 19.16:1045 1. Iron ores—Michigan—Marquette Co.—Data processing. I. Powers |  | | Journal (article/letter/editorial) | | pelitic phyllite formations,the GbahmRidge and Mt. Alpha Formations, separatedby the 350-m-thickNimba Itabirite...the Tokadeh-Yuellitonridge. Magnetite oxidefacies iron-formation is recrystallized to gray itabirite on...magnetite oxide-facies iron-formation. Chemical balances indicate that iron-formation could have been...COu-richor reducing) which encouragedliberation of iron during weathering. Irregularity in thicknessand...thicknessand characterof banding and poor separationof iron and silica precludean hypothesisof banding on rhythmic |  | | Journal (article/letter/editorial) | | which can be collected in Michigan and at the abandoned Sedalia copper mine, four miles north of Salida...quartz has incrusted fluorite, barite, calcite, or siderite. Beautiful deep purple fluorite crystals coated... Also in New Mexico (at Round Mountain, Sierra County) can be found a very unusual incrustation pseudomorph—pink... Opal Glauberite, fossils Goethite Pyrite, siderite, magnetite, chalcopyrite, sphalerite Pyrite ...specimens, found on the dumps of the Kelly mine, Socorro County, were much more common during the early |  | | Journal (article/letter/editorial) | | ..................... ABSTRACT. At the Caribou mine, near Nederland, Colorado, a vein of uraninitebearing...brecciation. In Stage A, quartz, calcite, and siderite were followed successivelyby pyrite, chalcopyrite...structuralcharacter of uraninite. The Caribou Mine is located in Boulder County in the Colorado Front Range,four...of Denver. Uranium was discoveredat the Caribou Mine in 1945 by G. C. Ridland (21) * duringa Geigercountersurveyof...dumpandunderground workings. Prior to the discoveryof uranium the mine had intermittentlybeenworkedfor silver ores since1869 |  | | Journal (issue) | | Saavedra province (politically equivalent to a U.S. "county"), Potosf department ("state' 1), southwestern...colonial days. A hundred years ago, the Machacamarca mine in this district became the world's firs locality...1990s, including pyrite, boumonite, chlorargyrite, siderite, and pyromorphite. In June 2003, the three Ninache...Ninache brothers, miners from the Colavi mine, were hiking over the barren hills of the unworked Tomokoni...a few hundred meters from the active Canutillos mine, when their curiosity was aroused by a long earthy |  | Foley, Nora K., Caddey, Stanton W., Byington, Craig B., Vardiman, David M. (1993) Mineralogy, mineral chemistry, and paragenesis of gold, silver, and base-metal ores of the North Amethyst vein system, San Juan Mountains, Mineral County, Colorado. Professional Paper 1537. US Geological Survey doi:10.3133/pp1537 | Report (issue) | | Amethyst Vein System, Sari Juan Mountains, Mineral County, Colorado U.S. GEOLOGICAL SURVEY PROFESSIONAL...Amethyst Vein System, San Juan Mountains, Mineral County, Colorado By NORA K. FOLEY, STANTON W. CADDEY,...Amethyst vein system, San Juan Mountains, Mineral County, Colorado / by Nora K. Foley . . . [et al.]. p...ores—Geology—Colorado—Mineral County. 2. Ore deposits—Colorado—Mineral County. I. Foley, N.K. II. Series........................................... Stage Alpha................................................ |  | | Journal (article/letter/editorial) | | commonly associatedwith limonite, hematite and siderite and containing among others the eiements S, Cu...color to highly dispersedinclusions of elementary iron reducedfrom the ferric state by ionization accompanying...November 1955. 874 CALLEDAMETIIVST COLORCENTERSIN ALPHA-QLIARTZ 875 color on the pyramidal (1011) faces...defect-structurephenomenaand mosaicstructure" in distinguishing alpha- and beta-quartz. The first quantitative spectroscopicstudy...a "Diamonite" (Al2O3)mortar and in a "Plattner" iron mortar and comparing levels of impurity introduced |  | | Report (issue) | | AND CLAY MINERALOGY OF THE CHIEFTAIN MINE, DINOSAUR RIDGE, PATCH MINE, AND OTHER LOCALITIES ALONG THE FRONT..................................... 18 Chieftain mine .......................................................... 49 Patch mine.................................................... 52 Mine workings and geology................. 67 Nederland; mining in Boulder County .............................. 67 Boulder Canyon...showing X-ray pattern of clay sample from the Rubey mine, Golden........................................ |  | | Journal (article/letter/editorial) | | locations for Analcime with cube faces (see also Michigan). Wasson's Bluff in Parrsboro, which is always...Guadalajara sent in some peculiar crystals from the Ojuela mine, Mapimi, Durango. On the 3x5 cm specimen was wulfenite...match of " d " values was found for barite. The alpha and beta refractive indices of one of the crystals...allanite suggests it is not metamict. UNITED KINGDOM Siderite Mr. Robert Fisher of St. Catherines, Ontario,...particularly interesting purple fluorite from the Lady Wash mine, near Egam, Derbyshire. The 2 mm crystals were dotted |  | | Journal (article/letter/editorial) | | 80401, USA Department of Geological Engineering, Colorado School of Mines, Golden, CO, 80401, USA A R...contaminant level for arsenic, uranium, and/or gross alpha. Abstract 1. Introduction Native American tribal...wells); instead, gross alpha, which measures total radioactive decay by alpha emission, was used as a...water. A common assumption is that 2/3 of gross alpha emission (pCi/L) is the result of U concentration...concentrations in ground water when only gross alpha levels were measured, a 2/3 scaling approach and |  | | Journal (issue) | | 50 to $ 1,000.00 HYDROBORACITE from the Thompson mine, Death Valley, Calif. Some spec imens w ith colemanite...S. Mitchell The Minerals of the Morro Velho Gold Mine, Brazil...........................................Good thumbnail of the simple SILVER. Glenn Lake Mine. San Diego Co., Calif. A group of octrahedron xl...doubly terminated xls with good RENARDITE. Ruggles Mine, Massive. Rare. 2 x 4cm $14.00 pink color. Slightly...Un COBALTITE xl. Tunaberg, MILARITE xls. Valencia Mine, believably well documented. Sweden. A nice single |  | | Journal (article/letter/editorial) | | Western Washington University, Bellingham, WA 98225, USA; mustoeg@wwu.edu; Tel.: +1-360-650-3582 Received:...with calcium carbonate, calcium phosphate, various iron and copper minerals, manganese oxide, fluorite,...petrifaction include calcite, apatite, iron pyrites, siderite, hematite, manganese oxide, various copper...that contains quartz-filled fractures (Washington, USA) to silicified wood that contains abundant copper...calcite, dolomite, calcium phosphate, and various iron minerals as agents of wood petrifaction [2]. As |  | | Journal (article/letter/editorial) | | MARCH 1951 IRON FORMATION AND ASSOCIATED ROCKS IN THE IRON RIVER DISTRICT, MICHIGAN By HAROLD L. JAMES...JAMES ABSTRACT The iron formation of the Iron River district is part of a Precambrian sequence of strata...strata characterized by a high iron content and varied mineralogy. The iron formation, where unoxidized...chert and siderite. It is underlain by a graphitic slate containing about 20 per cent iron in the form...finely disseminated pyrite. Graywacke overlies the iron formation with at least local disconformity; this |  | Wittkop, Chad, Teranes, Jane, Lubenow, Brady, Dean, Walter E. (2014) Carbon- and oxygen-stable isotopic signatures of methanogenesis, temperature, and water column stratification in Holocene siderite varves. Chemical Geology, 389. 153-166 doi:10.1016/j.chemgeo.2014.09.016 | Journal (article/letter/editorial) | | temperature, and water column stratification in Holocene siderite varves Chad Wittkop a,⁎, Jane Teranes b, Brady...E. Böttcher Keywords: Lacustrine Siderite Varves Stable isotopes Iron formation Ferruginous lake a b...b s t r a c t Manganoan siderite ([Fe,Mn]CO3) occurs in abundance of up to 19% (dry weight) as the sole...varved sediments from freshwater Otter Lake (OL), Michigan. Radiocarbon dating and varve counts from a 7-m...7-m piston core constrain periods of major siderite accumulation to sediments older than 1200 cal yr BP |  | | Journal (article/letter/editorial) | | Modelling; Catchment; Granite ŽProbst, A. Ž170. 203. Acid mine drainage; Pyrite; Sulfide dissolution; Microorganisms...Pollution; Water treatment ŽFrei, M. Ž170. 221. Alpha-recoil track; Dating; Biotite; Phlogopite; Etching...Volumes 162–170 Aquifer; Redox; Groundwater; Sulfur; Iron; Modelling ŽVon Gunten, U. Ž167. 271. Aquifer biogeochemistry;...Ž169. 265. Metal immobilization; Precipitation; Siderite; Strontium ŽParmar, N. Ž169. 281. Biomineralisation;...Geochronology; Argon; Diffusion ŽLo, C.-H. Ž165. 135. Alpha-recoil track; Dating; Phlogopite; Etching ŽGogen |  | | Journal (article/letter/editorial) | | variety containing inclusions commonly composed of iron or manganese oxides that can form intricate patterns... translucent chalcedony, the color being due to iron impurities; s a r d is a brown chalcedony. C h r...There are two distinct structural forms of quartz: alpha quartz or "low quartz" that forms at temperatures...Most crystallized quartz familiar to collectors is alpha quartz, 2 4 4 A: T h e commonest forms m, r...symmetry that alpha quartz lacks. Not only does all quartz crystallizing below 573°C form alpha quartz, but |
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