 | | Report (issue) | | Geology of Precambrian Rocks Central City District Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 474-C Prepared... Geology of Precambrian Rocks Central City District Colorado By P. K. SIMS and D. J. GABLE SHORTER CONTRIBUTIONS...1918Geology of Precambrian rocks, Central City district, Colorado, by P. K. Sims and D. J. Gable. Washington, U...district, Colorado. 1964. (Card2) 1. Geology, Stratigraphic Pre-Cambrian. 2. Geology Colorado Gilpin Co. I...________________________ Biotite gneiss ___________________________ Biotite-quartz-plagioclase gneiss |  | | Report (issue) | | MINES CENTRAL CITY MINING DISTRICT GILP1N COUNTY, COLORADO By F.B. Moore and C.R. Batter UNITED STATES...CALHOUN MINES CENTRAL CITY MINING DISTRICT, GILPIN COUNTY, COLO. By F. B. Moore and C. R. Butler Washington...CALHOUN MINES CENTRAL CITY MINING DISTRICT GILPIN COUNTY, COLO. CONTENTS Page Page Abstract ................................ Mine descriptions............................ Wood mine .. ......................bodies ........................ Mine descriptions Continued Wood mine Continued Suggestions for exploration |  | | Report (issue) | | Deposits Central Part of the Front Range Mineral Belt Colorado By P. K. SIMS and others GEOLOGICAL SURVEY PROFESSIONAL..._ _ Uranium-bearing pegmatite _____________ _ Biotite..m uscovite granite _______________ _ Tertiary...Hill-upper Russell Gulch area ________ -Flack vein ____________________________ _ West Flack mine __________________...__________________ _ ~ercer County mine ______________ -German and Belcher mines ______________ Iron mine, by A. A. Drake..._________________ _ Kirk mine ____________________________ _ Old Town mine, by A. A. Drake, Jr ______ |  | | Report (volume) | | A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby |  | | Report (volume) | | ............................................. Colorado.................................................especially from those of Arkansas, California, Colorado, New Mexico, Oregon, South Dakota, Tennessee,...minerals and rocks, their occurrence and uses: Colorado State Geol. Survey Bull. 6, 1913. 8 USEFUL...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton; |  | | Journal (article/letter/editorial) | | Precambrian Rocks of the Southern Front Range, Colorado ABSTRACT Rb-Sr analyses of whole-rock samples...areas in the southern part of the Front Range, Colorado, yield ages of 1,781 ± 66 and 1,722 ± 50 m.y....igneous and metamorphic events of the Front Range in Colorado. Analyses of minerals separated f r o m t w o...volcanic in origin. These rocks west of Golden, Colorado, were named " I d a h o Springs F o r m a t i...rocks in the southern part of the Front Range, Colorado, in order to examine existing lithologic correlations |  | | Journal (article/letter/editorial) | | JanuaryIFebruary: Pyromorphite, Les Barlow, A., 98 Farges mine, Correze Province, France; Barnes, J. H., see Media...Silver, Mollie Gibson mine, Bertrandite, New Hampshire, 161 Pitkin County, Colorado; specimen Beryl, South... of Waterloo, Ontario, Canada, P: I. September/October: Smithsonite, Kelly Russell, 396-99 mine, Magdalena...Magdalena district, Socorro County, New Mexico; Ron Gibbs specimen and Biotite: New Hampshire, 162; South...Bismuth, South Dakota, 383 tite, Thomas Range, Juab County, Utah; Bolt, E., see Spotlight on Juniors Martin |  | | Journal (article/letter/editorial) | | Geologic and geochemical study of the Picacho gold mine, California: gold in a low-angle normal fault environment...faults of low to high dip at shallow depths in the mine, merging downward with a synchronous, low-dipping... NY 14853, USA E-mail: losh@geology.cornell.edu D. Purvance Glamis Gold Inc, Picacho Mine, 1891 Rail...Rail Avenue, Yuma, AZ 85365, USA R. Sherlock SRK Consulting, Suite 800, 580 Hornby Street, Vancouver, BC...E. C. Jowett Waterloo Centre for Groundwater Research, University of Waterloo, Waterloo, ON, Canada N2L |  | | Report (volume) | | . 234 " y { " ,-t .. .~,:",. I " , COLORADO "or.! _ +, (~ STATE OF .~ :'(' COL~ADO /... BULLETIN 40 RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BlaLlllGRAPHY by James L. Nelson-Moore,...Energy COLORADO GEOLOGICAL SURVEY DEPARTMENT OF NATURAL RESUURCES STATE OF COLORADO DENVER, COLORADO 1978...ete 11 st r ng of rad i aaet 1ve occurrences 1n Colorado, with a comprehensive blbi iography and bibliographic...association of radium, uranium. and vanadIum on the Colorado Plateau sparked several periods of exploratIon |  | | 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...Acanthite-argentite, Colorado, 307 Actinolite/tremolite, Michigan, 344 Adularia, Michigan 341 “Alaskaite,” Colorado, 307...395 Allanite-(Ce), California, 162 Allophane, Colorado, 307 Almandine, Connecticut, 261 Almandine-spessartine |  | Che, X. D., Linnen, R. L., Wang, R. C., Groat, L. A., Brand, A. A. (2013) DISTRIBUTION OF TRACE AND RARE EARTH ELEMENTS IN TITANITE FROM TUNGSTEN AND MOLYBDENUM DEPOSITS IN YUKON AND BRITISH COLUMBIA, CANADA. The Canadian Mineralogist, 51 (3) 415-438 doi:10.3749/canmin.51.3.415 | Journal (article/letter/editorial) | | Earth & Environmental Sciences, University of Waterloo Waterloo, Ontario, N2L 3G1, Canada Robert L. LINNEN§...the Boss Mountain molybdenum deposit and the Ray Gulch tungsten deposit contained primary magmatic titanite...Geological Survey core library were studied. The Ray Gulch tungsten deposit is located in the Yukon Territory...associated with the midCretaceous Dublin Gulch stock, a biotite-hornblende granodiorite intrusion. The...between metasedimentary hornfels and the Dublin Gulch stock. The scheelite mineralization occurs in dark |  | Mrozek, Stephanie A., Chang, Zhaoshan, Spandler, Carl, Windle, Steve, Raraz, Cesar, Paz, Alberto (2020) Classifying Skarns and Quantifying Metasomatism at the Antamina Deposit, Peru: Insights from Whole-Rock Geochemistry. Economic Geology, 115 (1) 177-188 doi:10.5382/econgeo.4698 | Journal (article/letter/editorial) | | Geological Engineering, Colorado School of Mines, Golden, Colorado 80401, USA 3CompañĂa 4Monazita Minera...904048/4698_mrozek_et_al.pdf by University of Waterloo user Submitted: September 16, 2017 / Accepted:...Antamina mine area. Inset in upper right corner shows location of study area in Peru. B. Near-mine sample...porphyry-style quartz stockworks and secondary biotite alteration (Mrozek, 2018). Endoskarn alteration...904048/4698_mrozek_et_al.pdf by University of Waterloo user 179 SCIENTIFIC COMMUNICATIONS A A170-254 |  | | Journal (article/letter/editorial) | | Investigation of Gilley Fluorspar Deposits in Cherokee County, Alabama, by James F. O'Neill. It is interesting... 50 miles northeast of Birmingham, in Cherokee County, located in West 1/2, West V2 of Section 16, Township...which comes from the Culver-Baer mine, Sonoma Co., Calif. Colorado—An interesting article, "Cordierite..."Cordierite in pegmatite near Micanite, Colorado," by E. William Heinrich, appeared in the March-April, 1950,...pegmatite district lies across the Park-Fremont County line in south-central Co'crado, a few miles northwest |  | | Journal (article/letter/editorial) | | metamorphism of an aluminous sediment produced biotite syenite gneiss; next, perhaps late in this phase...randomly oriented corundum crystals occur mainly in biotite gneiss and are surrounded by halos of alkali feldspar...material for petrographic study and analysis from the mine dumps. All locations cited are from Clabaugh's detailed...6910/i0016-7606-73-1-131.pdf by University of Waterloo user 132 R. J. FOSTER—PRECAMBRIAN CORUNDUM-BEARING...gradations exist from corundum-bearing rocks to biotite gneiss to feldspathic gneiss to sillimanite or |  | Lackey, J. S., Erdmann, S., Hark, J. S., Nowak, R. M., Murray, K. E., Clarke, D. B., Valley, J. W. (2011) Tracing garnet origins in granitoid rocks by oxygen isotope analysis: examples from the South Mountain batolith, Nova Scotia. The Canadian Mineralogist, 49 (2) 417-439 doi:10.3749/canmin.49.2.417 | Journal (article/letter/editorial) | | Department, Pomona College, Claremont, California 91711, USA Saskia ERDMANN Geological Survey of Canada, Ottawa...Geology, The College of Wooster, Wooster, Ohio 44691, USA Kendra E. MURRAY3 Department of Geology, Carleton...Carleton College, Northfield, Minnesota 55057, USA D. Barrie CLARKE Department of Earth Sciences, Dalhousie...University of Wisconsin, Madison, Wisconsin 53706, USA Abstract Garnet in Nova Scotia’s peraluminous South...Ohio 44242, USA. Present address: Department of Geology and Geological Engineering Colorado School of Mines |  | | Report (issue) | | ORE DEPOSITS OF TILE LEADVILLE MINING DISTRICT, COLORADO BY S. F. EMMONS, J. D. IRVING, AND G. F. LOUGIILIN...Glaciers of the last stage _ 10 Iowa Gulch glacier_ 10 Evans Gulch glacier _ 10 Effects of glaciation on...deposition _ 12 Moraines _ 13 Moraines of_ Evans Gulch glacier.. 13 Lateral moraines _ 13 Terminal moraine...Arkansas glacier _ 14 North_ lateral_ moraine_ of Iowa Gulch glacier _ 15 Glacio-fluviatile deposits_ 15 High...Lincoln porphyry _ 46 Johnson Gulch porphyry _ 48 Mafic varieties_ 50 Evans Gulch porphyry _ 50 Mount Zion |  | | Journal (article/letter/editorial) | | Alabama P.O. Box 0 Tuscaloosa, Alabama 35486 85° • County Seat ALABAMA'S MINERAL INDUSTRY began in 1818...iron furnace was built near Russellville, Franklin County, utilizing local brown iron-ore (goethite) deposits...Tennessee River Valley area near Huntsville, Madison County, the first such mineralogical description in the...1831 along tributaries of the Coosa River (Chilton County). Utilization of mineral resources in Alabama has...iron ore, clay, marble, bauxite, and Figure 1. County map of Alabama. Courtesy U.S. Geological Survey |  | | Journal (article/letter/editorial) | | Collections and Displays figure 1: Curator Peter Russell shows the rock garden to graduate student Kim Rau...of Waterloo ONTARIO, CANADA PETER I. RUSSELL Department of Earth Sciences University of Waterloo Waterloo...earth sciences departments at the University of Waterloo to mark Canada’s 100th Anniversary of Con396 ...the public in 1968. Funded by the University of Waterloo and the Province of Ontario’s Department of Culture...One Building on the campus of the University of Waterloo. The museum is open from 9:oO A.M. t o 5:oO P |  | | Report (volume) | | Bulletin 618 GEOLOGY AND UNDERGROUND WATER OF LUNA COUNTY, NEW MEXICO BY N. H. DARTON WASHINGTON GOVERNMENT...Fossils and correlation____,______________ 43 Colorado shale___________________________ 44 Distribution_______...Hondale region______________ '.___________________ Waterloo region __________________________ Columbus region... ILLUSTRATIONS. PLATE I. Geologic map of Luna County, N. Mex....................... In pocket. II. A...showing grade of underground water surface in Luna County, N.Mex........................................ |  | | Report (volume) | | ............................................. Colorado..................................................................................:........... Colorado ........................-.............:.........-.........-........."......---........-.. 302 Colorado ................................................Alabama, McCalley, 3819. Iron ore mines in Jefferson County, Castlcnian, 777. Leaf impressions in the Eocene...Iliamna and Clark, Spurr, 5176. Malaspina glacier, Russell,!. C.,4699. Mammoth remains in the Yukon district |  | | Journal (article/letter/editorial) | | n° u Oo0?nC VA'. Lamoille' P o lar \ „ S ta r V Mine IT So .F o rk.-jir Humboldt '.•River.' Q u a te...881/3415781/BUL50_6-0881.pdf by University of Waterloo user B U L L ET IN O F T H E G E O L O G IC...881/3415781/BUL50_6-0881.pdf by University of Waterloo user 882 E. P. SHAEP----STRUCTURE OF RUBY-EAST...881/3415781/BUL50_6-0881.pdf by University of Waterloo user INTRODUCTION 883 States (Fig. 1). A t...881/3415781/BUL50_6-0881.pdf by University of Waterloo user 884 R. P . SHARP----STRUCTURE OF RUBY-EAST |  | | Journal (article/letter/editorial) | | annualreviews.org Access provided by University of Waterloo on 01/26/15. For personal use only. u.s. Geological...annualreviews.org Access provided by University of Waterloo on 01/26/15. For personal use only. WATERS NOT...annualreviews.org Access provided by University of Waterloo on 01/26/15. For personal use only. that equilibration...containing several hundred mg/liter silica evaporates in mine workings to form F-'-rich (up to 15 g/liter) and...(43) reports mercury concentrations in the coal mine waters of the Ukrainian Donbas region ranging from |  | | Report (issue) | | small area on the plateau of Arizona, in Coconino County. PRODUCTION. The total production to December...Thurston & Hardy, in the Ash Peak district, Greenlee County; the Manganese Development Co., Wheeler, U. S.... Maricopa County; the Arizona Manganese Co., operating the Howard claims, in Mohave County; the Hardshell...Hardshell mine, in Santa Cruz County; the Bunker and Burmeister claims, in Yavapai County; the Dobbins claims...claims, in Yuma County; and the Globe Commercial Copper Co. and Superior & Globe Co., in the Globe district |  | | Report (issue) | | COLORADO STATE GEOLOGICAL SURVEY BOULDER R. D. GEORGE. State Geologi.t BULLETIN 3 G E O L O G Y A...R E DEPOSITS OF THE ALMA DISTRICT PARK COUNTY, COLORADO BY HORACE B. PATTON ARTHUR J. HOSKIN G. MONTAGUE...Charles A. Lory Governor of Colorado President University of Colorado President State School of Mines...TRANSMITTAL State Geological Survey, University of Colorado, December 1, 1912. Governor John F. Shafroth,...the honor to transmit herewith Bulletin 3 of the Colorado Geological Survey. Very respectfully, R. D. GEORGE |  | | Journal (article/letter/editorial) | | PanAfrican-Liberian boundary, Liberia thrusting. Colorado 80225 tion of the area as part of a cooperative...9049/i0016-7606-87-6-851.pdf by University of Waterloo user 852 C. H. THORMAN tions regarding boundary...by aligned streaks, thin bands, and lenses of biotite, and the rocks typically vary from strongly foliated...amphibolite. Banding is expressed by alternating biotite-rich and biotite-poor layers with local amphibolite, generally...generally 2 to 10 cm thick. Intercalations of biotite-poor gneiss as much as several hundred metres thick |
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