 | | 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) | | 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...formations. _______________________________ Baraga Group._____________________________ Hemlock Formation___________________ |  | | Book | | Mineralogy of Michigan by E. W. Heinrich updated and revised • by George W. Robinson M By E W~ Hellnr]ch...Museum Michigan Technological University Houghton, Michigan 49931 2004 © MINERALOGY OF MICHIGAN 3 FOREWORD...FOREWORD Michigan has a long and varied geologic history that includes repeated episodes of volcanism...before the first Europeans set foot here. When Michigan became a state in 1837, one of the first actions...and we continue to learn more about them today. Michigan minerals helped to build the state and nation |  | | Journal (article/letter/editorial) | | Tewksbury, Great Britain; and Dr. George W. Robinson, Michigan Technological University. INVESTIGATION OF OXIDE...Ambatofotsikely was indeed a member of the columbite group. This sample was a manganese-rich ferrocolumbite...ranges from 1.5 to 2.9 wt. %. Columbite-tantalite group minerals are sparse and form prismatic crystals...and G. W Robinson, A. E. Seaman Mineral Museum, Michigan Tychnological University, Houghton, MI 49931....MICROMINERALS FROM BLACK JACK CANYON, GREENLEE COUNTY, ARIZONA. E. Grundel, 2000 S. 2d St., No. 8, Arlington |  | | Journal (article/letter/editorial) | | Photographs JanuaryFebruary: Rhodochrosite, N’Chwaning mine, Hotazel, South Africa. Martin Zinn specimens, Erica...Cryo-Genie mine, San Diego County, California. Natural History Museum of Los Angeles County specimen,...Ground Hog mine, Gilman, Eagle County, Colorado. Natural History Museum of Los Angeles County specimen...Colorado, 307 Actinolite/tremolite, Michigan, 344 Adularia, Michigan 341 “Alaskaite,” Colorado, 307 Albite...Amblygonite-montebrasite,California, 160 Analcime, Michigan, 339 The Andes Come to Arizona, R. W. Jones, 59 |  | | Report (issue) | | (CaBSiO4OH) vesicle filling from a basaltic Houghton County lava flow. Small specks of native copper occur...the surface and between the nodular masses. The Michigan Bicentennial symbol (back cover) incorporates...Survey Division BULLETIN 6 THE MINERALOGY OF MICHIGAN by E. Wm. Heinrich Professor of Mineralogy and...University of Michigan Ann Arhor, Michigan Lansing, Michigan 1976 STATE OF MICHIGAN WILLIAM G. Mrr...State of Michigan CL '48 s.321.6. Printed by Speaker-Hines and Thomas, Inc., Lansing, Michigan. Available |  | | Journal (article/letter/editorial) | | pegmatite was mined at Barringer Hill in Llano County in the early 1900s but was flooded by Lake Buchanan...from 1900 to the middle 1940s; but the Mariposa mine, which produced most of the rare minerals, ceased...& Minerals on "The Weeks Pegmatite Mine, Wakefield, Carroll County, New Hampshire" (March/April 1991)...66, May/June 1991 197 LOCALITIES BY COUNTY Bastrop County KEY mm T * ? — — — — best occurrence..."specimen quality" questionable occurrence Angelina County Lufkin, 1 mile N of Lufkin in railroad cuts, in |  | | Report (issue) | | . . ALAMANCE COUNTY 5 5 Pyrophyllite ...... f .......... 5 ALEXANDER COUNTY ................. 9 ALLEGHANI COUNTY 1± Manganese ....... f 11 Barite , 11 Copper . 11 ASHE COUNTY. . . . Copper...Staurolite AVERY COUNTY . . ......... 13 13 13 . 13 Iron and Epidote BUNCOMBE COUNTY Garnet ...........13 Moonstone and Associated Minerals 15 BURKE COUNTY 15 Corundijin 15 Itacolumite 15 Toiirmaline...Amethyst f . , 4 .18 CABARRUS COUNTY 18 Minerals of the Cabarms County Mines 18 CALDWELL COUNT! 18 Pyrite |  | Ledevin, , Arndt, , Chauvel, , Jaillard, , Simionovici, (2019) The Sedimentary Origin of Black and White Banded Cherts of the Buck Reef, Barberton, South Africa. Geosciences, 9 (10) 424 doi:10.3390/geosciences9100424 | Journal (article/letter/editorial) | | Sedimentary Origin of Black and White Banded Cherts of the Buck Reef, Barberton, South Africa Morgane Ledevin, Nicholas...October 2019 Abstract: The Buck Reef is a 250–400 m thick sequence of banded black...Archean; Buck Reef; sediment; geochemistry; climate 1. Introduction Banded cherts and iron formations...silica alternate with darker bands of carbonaceous, iron-rich, carbon-rich siliceous or detrital sediments...This study addresses these questions using thethe Buck sequence black white cherts addresses these questions |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . . 1 County Listings. . . . . . . . . . . . . . . . . . . .... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 7 Beaver County . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . 7 Box Elder County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 10 Cache County . . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (issue) | | Soft-Bodied Bryozoan Fossil Discovered in Strip Mine in Elk County, Pennsylvania Page 3 The Hidden Hazards...specimen of a soft-bodied bryozoan found in Elk County by Vik Skema (retired) and Cliff Dodge of the bureau...Soft-Bodied Bryozoan Fossil Discovered in Strip Mine in Elk County, Pennsylvania Roger J. Cuffey1, Clifford...found the unusual fossil in a bituminous coal strip mine (which has since been reclaimed). Several more hours...scientists. Context and Study Methods The strip mine was located on the south slope of Winslow Hill (Dents |  | | Report (issue) | | .... 11 ^Midway Group ......................... Clayton Formation Wilcox Group .................................................. 20 Claiborne Group ........................ 20 Claiborne and Jackson...Interpretation of Sedimentological Data ....... 40 Wilcox Group .......................... 42 Nanafalia Formation...Environment of the Tuscahoma FormationClaiborne Group 42 48 50 50 51 ........................ 55 Description... 55 Depositional Environment of the Claiborne Group ...... 55 KAOLIN AND BAUXITE DEPOSITS ....... |  | | Journal (issue) | | Elder, Audrey E. Smith P.O. Box 234 Crystal Falls, Michigan 49920 shawncarlson@hotmail.com markelder@juno...gold prospect is located in central Dickinson County, Michigan, approximately ten kilometers north of the...the dominant exposed bedrock in this part of the county. Excavated near the tum of the 20th century, the...obvious even when visiting some of the Garland County mines. I also planned to do some Magnet Cove collecting...of the A. E. Seaman Mineral Museum in Houghton, Michigan. (Continued on page 5 ) MARTIN ZINN EXPOSITIONS |  | | Journal (article/letter/editorial) | | (top left). Calcite, 5.5 cm high, Elmwood mine, Smith County. Terry Huizing specimen, Jeff Scovil photo...(above). Fluorite, 13.1 cm wide, Elmwood mine, Smith County. Francis Benjamin specimen, Jeff Scovil photo...(left). Fluorite, 2.5 cm on edge, Elmwood mine, Carthage, Smith County. Terry Huizing specimen and photo. Figure...Figure 4 (right). Cumberland mine, Smith County. Travis Paris photo (2004). Figure 5 (far right page)...Tennessee brown iron deposits, the Mascot–Jefferson City zinc district, the Bumpass Cove iron-zinc-manganese |  | | Report (issue) | | RESOURCES PUBLICATION 89 MINERALS OF ALBEMARLE COUNTY, VIRGINIA Richard S. Mitchell and William F. Giannini...RESOURCES PUBLICATION 89 MINERALS OF ALBEMARLE COUNTY, VIRGINIA Richard S. Mitchell and William F. Giannini...RESOURCES PUBLICATION 89 MINERALS OF ALBEMARLE COUNTY, VIRGINIA Richard S. Mitchell and William F. Giannini...through temolite-acti 15 15 l5 l6 l6 Teolite group throug References cited ILLUSTRATIONS Figure 1...talc l0 PUBLICATION 89 MINERALS OI' ALBEMARLE COUNTY. VIRGINIA Richard S. Mitchell* and William F. |  | | Report (issue) | | beauty are found in Cowee Valley in the Franklin County area of western North Carolina. Many of these...Alamance County ........................................................... 24 24 Alexander County ......Alleghany County ....................................................... 25 Ashe County ............Avery County ............................................................... 25 Buncombe County ......Burke County ............................................................... 26 Cabarrus County ... | | | Report (issue) | | beauty are found in Cowee Valley in the Franklin County area of western North Carolina. Many of these...COUNTIES Alamance County • .' 22 24 24 Alexander County 24 Alleghany County 25 Ashe County • 25 Avery...Avery County 25 Buncombe County 26 Burke County 26 Cabarrus County 27 Caldwell County 27 Caswell...Caswell County 27 Catawba County 28 Chatham County 28 Cherokee County 28 Clay County • • 29 Cleveland...Cleveland County 29 Davidson County • 30 vi Davie County Durham County 31 Franklin County 31 31 |  | | 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 |  | | Report (issue) | | information respecting this important• field of iron--ore. A. STRAHAN, Director. Geological Survey Office..., • • • • • • 25-29 29 CHAPTER V. • • • • Iron-Ore Field • . . . . North-East Skye Comparisons.... ,, Fig. 2, Outcrop of Ironstone, east of Main Mine, Raasay . V. General View of Inferior Oolite at...shales and sandstones .. The now well-known Raasay iron-ore belongs to the top of the formation, as represented...1914. • All readers interested in our supplies of iron-ore are probably aware that the now Vt"'ell-known |  | | Book (edition) | | though the more exten sive deposits, such as coal and iron fields, gold belts, etc., are mentioned in general...mmed at Broken Arrow aud Trout creek, in Sc. Clair county. The strata in this field are more faulted und...prong of Canoe creek, in St. Clair county, to Ha\sop creek, in Bibb county, a distance of 60 miles. Down to...to Helena, in Shelby county, the field has an average width of 5 or 6 miles. Below that point the width...miles being in the latitud" of Blocton, in Bibb county. The south ern end of this field has a greater |  | | Book (volume) | | instance, a single Spodumene crystal from the Etta Mine near Keystone on the east side of the Mount Rushmore...production of minerals, principally Gold, Silver, Copper, Iron, Lead, Manganese and Zinc, along with lesser amounts...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 |  | | Journal (article/letter/editorial) | | About 40 miles northeast of Montgomery in Coosa County there is an outcrop that carries considerable tin...drusy quartz; the locality is the Aurora Quicksilver Mine in San Benito Co., Calif. A new occurrence for scheelite...might find interesting. It is scheelite from Marin County, California. It is of primary interest as it is...Andreas fault, extending from Marin County to San Luis Obispo County. Included in the Sur Series are limestone...Such beds are found in the vicinity of the Marin County discovery and are probably related to its origin |  | | Journal (article/letter/editorial) | | and Harris, 2008). The 3.55–3.30 Ga Onverwacht Group is a thick pile of submarine lava flows that erupted...Palaeoarchaean ocean floor was a major source for dissolved iron and nickel transferred to the ocean by reduced seawater...become concentrated in marine sediments, Fe in banded iron formations and Ni in shales. These lithologies and...in Wilson (2003). A set of chert samples from the Buck Reef Chert BARB3 drill core (Hofmann et al., 2013b)...and an epiclastic sedimentary unit overlain by the Buck Reef Chert (Lowe and Byerly, 2007). Each chert horizon |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯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...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯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...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |
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