 | | 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) | | e A re a — — — H9 - R 24W MAP OF TH E GIANTS RANGE GRANITE, POKEGAMA QUARTZITE, AND SURROUNDINGS, MINNESOTA................................................ Hyacinth.......................................................................... Granite of northern Michigan and Wisconsin.................................................... Central granite area of the Gogebic ran g e.................................................................................... Gogebic range............................................ |  | | 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) | | Upper divisions for the Precambrian of northern Michigan. These threefold classifications apparently are...Earlier Precambrian—Keewatin volcanic rocks, Soudan Iron Formation Member, and pre-Knife Lake batholithic...pre-Huronian, Huronian, and Keweenawan of northern Michigan, although almost the same as those of Grout et...pegmatite, near Richville Station, St. Lawrence County, New York. The age of the uraninite from six occurrences...to ascertain the content of the lead isotopes, range from 960 to 1310 million years, but the average |  | | Report (issue) | | Geology of the Menominee Iron-Bearing District Dickinson County, Michigan and Florence and Marinette...Division, Michigan Department of Conservation PAPER 513 Geology of the Menominee Iron-Bearing District...District Dickinson County, Michigan and Florence and Marinette Counties, Wisconsin By R. W. BAYLEY, C...cooperation with the Geological Survey Division, Michigan Department of Conservation 'I UNITED STATES...___________________ _ Vulcan Iron-Formation _____________ _ Traders and Curry Iron-Bearing Members_ Brier Slate |  | | Report (issue) | | Group ......... . Ely Greenstone ......... . Soudan Iron-Formation Laurentian Intrusives .... . Dikes .....History of the Name .. . Ogishke Conglomerate Agawa Iron-Formation. Principal Rock Types .. . Structure and........ . 62 Giants Range Region ...... . General Statement ....... . Giants Range Granite . . . . . ...Relative Ages from Zircon Types Ages for the Giants Range Region. . . . . ...... 62 62 ()3 64 64 65 History...Districts .... _ Wisconsin ................. _ Michigan .................. . .5. SOUTHWESTERN l\ | | Report (issue) | | Geology and Ore Deposits of the Cuyuna North Range Minnesota GEOLOGICAL SURVEY PROFESSIONAL PAPER... Geology and Ore Deposits of the Cuyuna North Range Minnesota By ROBERT GORDON SCHMIDT GEOLOGICAL ...occurrence and origin of Precambrian iron ore and manganiferous iron ore UNITED STATES GOVERNMENT PRINTING...1924Geology and ore deposits of the Cuyuna North range, Minnesota. Washington, U.S. Govt. Print. Off.,...North range. 2.Ore-deposits Minnesota Cuyuna North Range. S.Iron ores Minnesota Cuyuna North range. I.Title: |  | | Book (volume) | | stratigraphic sequence for the approximate age range, 600 Myr—2,400 Myr. I hope that this work, already...Palaeozoic age. The wide British stratigraphical range is a reflection of the fact that the British Islands...of the frequent and often extensive occurrence of iron-rich metasediments in many Precambrian outcrops...poor in mineralizations of economic importance. Iron. The Lewisian metasediments of Loch Maree include...calcium-silicate rocks, biotite schists, biotite granulites, iron-bearing mica schists, graphite schists, kyanite |  | | Report (issue) | | A293-A298 of this chapter. Numerous Federal, State, county, 1and local agencies and other organizations and...vicinity--Igneous and metamorp hie rocks_ - - -- --- -Basin and Range region __ ------------------Pacific coast region..._ _ Wisconsin ______ -- ____ -----------------Michigan-----------------------------OhiO-------------...cooperators ____________________________ _ 251 State, county, and local cooperators ______________ _ 251 Other...GENESIS OF BASE AND PRECIOUS METAL DEPOSITS Basin and Range province Bodie district, Oalifornia.-Detailed geochronologic |  | | Book (edition) | | Tin, 51+6; Aluminum, 553 14. Iron and Ferroalloy Metals 561 Iron, 561; Manganese, 578; Nickel, 586;..... In these hundred years the production of pig iron has increased 100-fold, of mineral fuels 75-fold...parts: metalliferous deposits, such as gold, copper, iron, or nickel (Part II) ; and nonmetallic substances...METALLIFEROUS DEPOSITS 19 oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magne¬ sium, titanium...and most of the other metals. The vast quantity of iron used in industry is obtained almost entirely from |  | | Book (volume) | | by a quartz vein containing chrome- mica. The iron deposits of Dobschau still yield an annual production...nickel pyrite and bismuth glance, nickeliferous iron gangue, containing and ores of secondary formation...veins, rich cobaltsilver veins The and lastly the iron ore deposits. class of quartz-cobalt veins, also...other a gray granular or crystalline variety rich in iron, chelentite (bismuth-cobalt-pyrite), asbolite, and...with filled in an older later filling, itself, iron-and-man- The vein fining, therefore, consists of |  | | Book (edition) | | Tin, 545; Aluminum, 551 479 14. Iron and F erroalloy Metals 560 Iron, 561; A1anganese, 575 ; Nickel,... . In these hundred years the production of pig iron has increased 100-fold, of mineral fuels 75-fold...1netalli"ferous deposits, such as gold, copper, iron, or nickel (P art II) ; and non11ietaUic substances...fallowing 13 elements: oxygen, silicon, alu1ninum, iron, calcium, sodiu1n, potassium, 1nagnesium, titaniu1n1...and most of the other metals. The vast quantity of iron used in industry is obtained almost entirely from |
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