 | | Journal (article/letter/editorial) | | the --------Arkansas Magnet Cove locality. - - - - - - - - Minerals of the Wilson Springs Vanadium Mines...Mines POTASH SULPHUR SPRINGS, ARKANSAS J. MICHAEL HOWARD Arkansas Geological Commission 3815 West Roosevelt...Little Rock, Arkansas 72204 DON R. OWENS Earth Science Department University of Arkansas at Little Rock...Rock 2801 South University Little Rock, Arkansas 72204 Unless otherwise noted, all photos by J. Michael...Owens collection 154 ROCKS & MINERALS Sulphur Springs was taken by William H. Lewis in 1844. By 1855 |  | | Report (Issue volume) | | solid mineral mining industries by States, by Forrest T. Moyer ____ __________ ______ ________ _ III V 1...Lyman Moore ----------- - --------- ------------Arkansas, by Grace N. Broderick ____ _____ ____________...__ ___ __ ___ __________ _ fin Delaware, by Robert T. MacMillan ___________________ _____ __ _ 203 Florida..._____________ _______ _ ________ _ 297. Georgia, by J. Rober t Wells and San1 M. Pickering, Jr. __________ _ 219...____ _______ __ ______ _ 361 Massachusetts, by Rober t A. Clifton ________ ________________ _ _ 369 Michigan |  | | Journal (issue) | | the world’s molybdenum comes from this Colorado pit. The 12,250-ft. elevation doesn’t make the going...waste per day from a pit in Nevada's Ingersoll Canyon. tapping the veins of the earth T. men who will dig...Reynolds Mining Corporation, near Hurricane Creek, Arkansas. CATERPILLAR REC. U.S. PAT, OFF. a FE FT...Aes(pet ETT PF aA INV NT RVAT OTA DIE DIDTEVA OTA DTD T STD IATal Pia Se esl | 4 ) — x ~~ on " %...\é& +2 ia »f 1 GeFAV! WAS aS rg. a Sell t t he y, ‘ 4 eal) Os) ; r =~ yA Pell Yi at |  | | Book | | sodium flame. Nearly insoluble. COMANCHE COUNTY: SE%, Sec. 4, T.3N., R.15W. The xtals are i to % inches...are. found near the outer edge of the dike. Sec. 9, T.3N., R.15W. near the center of the section. In a dike...side by granite, AGATE (See Quartz) CANADIAN COUNTY: South Canadian Rivers. In the gravel bars of...in sand plant waste dumps. CIMARRON COUNTY: Secs. 7, 8, 9, 10; T.5N., R.2E. Cimarron Meredian Rose agate...widely scattered in the Black Mesa area. DEWEY COUNTY: Agate is found 2 miles east of Seiling in the |  | | Report (issue) | | programing research under a formal system that has t,vo basic requirements: (1) Current work is reviewed...__________________________ = cry 1um, by Ho!'ace T. Reno ___ ____________ __________________________...____________ _ Columbium and tantalum, by Horace T. Reno ____________________________________________________..._______________________________ - - --- -------Potash, by E. Robert Ruhln1an__________ _____________________________..._____________________________ __________ _ 830 Sulfur, by G. W. Josephson _____ _____________ ___ ___ |  | | Journal (article/letter/editorial) | | Colorado School of Mines, Golden, Colorado 80401 USA Abstract The Guelb Moghrein Cu-Au deposit occurs...ankerite- and siderite-rich assemblages. Progressive alteration resulted in breakdown of siderite to magnetite...The nucleation of sulfides on graphite during siderite breakdown suggests redox reactions may have largely...at 2.17% Cu and 2.2 g/t Au, and ~57.7 Mt of sulfide ore at 1.15% Cu and 0.69 g/t Au. This contribution...seasons of detailed mapping in the Guelb Moghrein open pit, district-scale mapping, utilization of company regional |  | | Report (volume) | | JAMES RIDENOUR, STEVEN W. SCHMAUCH, and NICHOLAS T. ZILKA, U.S. BUREAU OF MINES E. Economic Appraisal...Wilderness and Additions, San Bernardino County, California By NICHOLAS T. ZILKA and STEVEN W. SCHMAUCH, U.S...James Ridenour, Steven W. Schmauch, and Nicholas T. Zilka _____.53 (E) Economic appraisal of mineral...Wilderness and additions, San Bernardino County, California, by Nicholas T. Zilka and Steven W. Schmauch ___...district. The largest lode mine in the district, the inactive Big Horn mine, has produced 254 Ib (115 |  | | Report (volume) | | GEOLOGY (SHORT PAPER 19 F. L. R O:ME AND GEOLOGI T I r HOYT 0 GALE HARGE W ... HI GTO GOVER i\IJ~...Preliminary report on t.he economic geology of Gilpin County, Colo., by E. S. Bastin and J. M. llill (publish...__ ____ . __________ The Aztec gold mine, Baldy, r. Mex ., by W. T. Lee (published Jan . 15, 1916) . -...ore in Cass, Marion, Morris, and h erokee counties, T ex., by E. F. Burchard (published Oct. 23, 1915)-----...Webster pari hes, La., by E. F. Burchard (published 0 t. 22, 1915). ___ ·---- ---··-----·-- -- -- - - 69 |  | | Book | | Quartz - mudstone - stibnite breccia vein. Eleanora mine. Hillgrove (xO.2). Bibliographic reference Gilligan...Melrose area 49 Figwe 6. Geology of the Mount Borah mine area (deposit 791) 51 Figure 7. Geology and mineral...Longitudinal section showing drilling results, Comet mine 59 Figrue 11. Geology and mineral deposits of...Browne copper mine area 68 Figure 14. Geology and mineralisation, Matilda Hill gold mine 72 Figure...Figure 15. Sections through the I1labo gold mine (deposit 173) 73 Figrue 16. Geology and mineral deposits |  | | Book | | ............13 Chap/er 2 Restormel Royal Iron Mine....................................................53 Cliapler 4 Perran Iron Lode & Gravel Hill Mine .....................................61 Chapter....................247 3 Author's Introduction T he beginnings of this book go back to a research...Holmes, on the history of the Restormel Royal Iron Mine. My publisher, Charles Thurlow, who specialises...that there was not enough on the Re tormel [ran Mine alone to make a reasonable s.ized publication. One |  | | Book | | R~F. SYMES 6 2 111"!:wu 1"*i,P'j1'*' ROCKS&~~ MINE ---"' -.-.. .... .,,._,...... ....... • <;;> ... ._ ................. ..wo1.......... . ► Clt ~t""'"""CID FL... -- --w ___ ., 25 25 OOUU.\G...---..-,•--· --r-~-~ ·. BilJL LAN ---· ·--·· (j t .. _._ -~8 41 -1() IJOlll$C :J,\'.!E;i:;1£( ... ~, I .'p. _· 1 • =..._• • 71) 77 78 ...t . . . .... ~ • ~ «>AiFai ELECTRICITY _ ...----....n,u.VKW! - · LIF .....,.., .--< 87 86 8q 't"G•!f'.;'tt; -; ' L - _ -' 11 1 'iii "iiii '& |  | | Book | | NUNC C.OGNOSCO [X PARTE ~ ~ T~10MAS J. BAT A LI BRA RY l RENT UNIVERSITY Digitized by the Internet... • EARTH'S EARLIEST BIOSPHERE • T . ,. . ,.. "'t -:- . • • ' ~ -.>~ y ,. ,. .. ~... see Chapter 8). Photographs by J. W. Schopf and T. Susuki. F RONTISPIECE. I"'\ CONTENTS LIST OF...XVll XIX XXI XXI XXlll I TRODUCTlO Ho,v TO READ T HlS BOOK by J . Willian1 Schopf Purpose of the Book...Prospects 1-1. 1-2. 14 14 16 19 21 24 29 CHAPTER 2 T HE NATURE OF THE EARTH P RIOR TO 2-1. Introduction |  | Wilkinson, W., Wendt, C., Wilkins, J., Haxel, G. (1986, March) Frontiers in geology and ore deposits of Arizona and the southwest, Field Trip Guidebook 3 - Precious metal mineralization, stratigraphy, and tectonics in southeastern California - Part A. Guidebook. Arizona Geological Society | Report (issue) | | IERS IN GEOLOGY AND ORE DEPOSITS OF ARIZONA AND ·I T HE SOUTHWEST Arizona Geological Society and the University...Depart from University of Arizona, front of Student Union. Travel to Yuma, Ariz. Arrive and check in at Stardust...to vehicles. Lunch* Stop 2. Overview of Mesquite mine Stop 3. Cargo Muchacho Mountains-visits to American...Exposure of cataclastic ledge Stops 5 and 6. Picacho mine. Lunch* between stops Depart for Tucson Arrive in...possible, bring hard hat and safety glasses for mine FIELD TRIP 3 PRECIOUS-METAL MINERALIZATION, STRATIGRAPHY |  | | Report (issue) | | of a Portion , of the Silver City Region Owyhee County, Idaho .1 R. R. Q r; o .... o ... Co:) Q ...OF A PORTION OF THE SILVER CITY REGION, OWYHEE COUNTY, IDAHO by R. R. Asher \ Idaho Bureau of Mines...Fork of Reynolds Creek - Sec. 12, T4S, R4W Matteson Mine - Sec. 30, T3S, R2W . • . . . . . • . Altered Granite... . . . . . Black Horse Mine, Sec. 3, T4S, R3W . ....... . . Cosmopolitan Mine, Sec. 8, T4S, R3W. . .... . . . . Grey Eagle Mine Sec. 17, T4S R3W . Nugent Mine, Sec. 18, T4S, R3W . . . . . • Prospects on Slack |  | | Report (issue) | | Seams of Coal between the Ash Coal and the Bassey Mine Coal ... 9.-Map of the South 8to.ffordshire-,Vorcestershire...by Mr. Smith; South Wales·(part} and Devon (pa.r t) by Mr. Pringle; Derbyshire ( Peak district), Cornwall...practical -~pplication of the clays. The changes th~t take place_laterally 1n most beds of :fireclay demand...Grit Ser'ies. q 22.) Wt. 48062-55. 750. a ;~o. J. T. & s., Ltd. G. u. 2 INTRODUCTION. The following...lieasures; with the aid of the geological maps and mine records it is easy to see that there are great reserves |  | | Book | | refractory minerals may occur. The Haib (560 million t, 0.32% copper) and Lorelei porphyry copper-molybdenum...copper mineralisationon the fann Damas {80 million t. IOOOto 2000 ppm copper). In this region the sequence...in 1-m-thick grey shale layers at the Klein Aub Mine (2% copper, 50 ppm silver, up to I ppm gold and...1986:Ruxton and Clemmey, 1986)and at Kojeka. Some 13million t of ore have The exploration targets and mineral deposits...copper-silver deposit of the now abandoned Oamites mine {HohewarteMetamorphic Complex) (Lee and Glenister |  | | Report (issue) | | STEWART L. UDALL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director For sale by the Superintendent...in eastern Connecticu t and Massachusetts, by Rober t Zartman, George Snyder, T. W. tern , . F. Marvin...of plutons in E lko County, ev ., and vicinity, by R. R. Coats, R. F . Marvin, and T. W. Srern ---- ----...the m etamorphis m of the almon Horn blende Schi t and Abrams Mica Schist, southern Klamath Mou n.tains...hig nesis of tuff in the Ricardo Formation, K ern County, southern California, by R. A. Sheppard and A. |  | Lawrence, D. M., Treloar, P. J., Rankin, A. H., Harbidge, P., Holliday, J. (2013) The Geology and Mineralogy of the Loulo Mining District, Mali, West Africa: Evidence for Two Distinct Styles of Orogenic Gold Mineralization. Economic Geology, 108 (2) 199-227 doi:10.2113/econgeo.108.2.199 | Journal (article/letter/editorial) | | mineralization largely linked to a transtensional event. The mine camp is divided into two distinct styles of gold...recognized, commercial mining only started in 2005. The mine camp is owned by Société des Mines de Loulo (Somilo)...Mako Series N 15° W 10° W 5° W 5° E 0° IELD T SH UIBA REG 20° N Yatela Sadiola HO . Niger R...Moz of contained gold at an average grade of 4.0 g/t Au (published data from Randgold Resources Ltd 2011... F2 Synform B Type I veins C Type II veins Pit outline 100 50 0 100 m (B) Zone of albitization |  | | Report (Issue volume) | | mav he nearer to andesine. .Also that some of the t,rachytic, fragment; are true variolites, and are undoubtedly...adjacent Gwna zones end off against a line of springs, in continuity with which is a deep hollow in the...the geological hlstozy of the Island £rom the time t>f the . fin.al eompletio:n of nh:e Mona Complex to...ROCKS AND •THE CAMBRIAN PEBJOD . JNTROJ)UOTOR Y. T Baron Hill, Oareg-ouen, J.\,fynydd Llwydiarth, Holland...felspars, and of rhyolitic and andcsitic lavas. Among t he acid lavas are fragment.-:· pf a purple felsite |  | | Journal (volume) | | Bldg. Lawlor Bids., Kinn and Yonne Sts. Hastiti|t<4 Hontreal Hamilton Toronto 152 Limited 922-923...Shafting, to 5" true to 2-IOOO part of one inch. Pit Rails, Steel A FULL STOCK OF MILD FLAT, RIVET-ROUND...Sheave and Pulley Fillings, Rubber Bumpers, and Springs, Rubber Clothing and Boots, Etc. THE MARK OF QUALITY...Toronto Junction St. John Toronto Junction St. John, Union St. " Stock Yards Fredericton Weston (Sub-bch) Nova... and branches .\ustralia— Union Bank of Australia, Ltd. New Zealand Union Bank of Australia, Ltd. India |  | | Report (issue) | | Northumberland but including the northernmost tip of County Durham. Geological knowledge of the district is...1·1· ol i !..,; :!I 0. ; «:) " !'-> c;') ~ 11> -t i:1 ;:;· ~ ~ B" OQ •; I.. !..i ~; s. ... 3... ;:;• ~, Cl,, c;· i lt',I ~ ~-. ~m 1001 -1 t ~ + + ~i ~ ~ • ,...l:,, " ea· !" .. s· I:)...ii I ~- ~ Ill ~ ~ I!. ..., 0i' 0 I .. i~.t :l I Q. it ~-i ... ig:i !... ~ ~ 2 i :;·gt ·--...This information, together with that derived from mine plans and surface and underground exposures, has |  | | Report (issue) | | .. . .. �\."· :•• ,. !-..:-t. ' .. -·..• THE OF THE '• �: ·�... :t.,.. "• � GEOL.OG Y LEICESTERSHIRE...Coitlfield is a subject of special economic intore�t a separi1te chapter is devoted to the subject. Geological...XIII.--EC0NOMIC GEOLOGY.-Water supply. Saline Springs. Minerals.. Pottery Clays. Whinstone. Ironstone...surrounding country -_ • .. • - 144 • • APPENDIX III.-PiT SkorioNs, BoRE.FIOI.ES, Ere. - 165 INGS.-Evidence... )' ,, - ... - 1 Grace Dien Quarry - .. - - 2 Pit in the Middle Lount Coal 3 Plan of the East Leicest |  | | Report (issue) | | ' ...... . t. , . ' '. •· ,. -·' . ' -,---. · .• --. -, .- ·- '_) ' -': • .c:·· /:t -, ' ' . ..�-:...�-: �� . '. .7,,,t--i,�.•• --_,__,.·?·,�-"?.:" .·.-·.: _.. .-. -··. . ..:; ,_...:,"�•- • - ,:;.·...W. A. READ, B.Sc. With Palaeontology by R. B. WILSON, B.Sc. EDINBURGH HER MAJESTY'S STATIONERY OFFICE...tion by Mr. J.K. Allan, Dr. E.M. Anderson and Dr. T. Robertson, were published in 1937-40. The present...and Millstone Grit has been written by Mr. R.B. Wilson who has also identified the fossils from the Lower· |  | | Book | | CB2 1RP 40 West 20th Street, New York NY 10011, USA 10 Stamford Road, Oakleigh, Melbourne 3166, Australia...MgO-Al,0,-SiO,—H,O W. Schreyer, W.V. Maresch and T. Baller 4 5 6 19 47 Two-pyroxene thermometry:...essay on metamorphic path studies or Cassandra in P-T-7 space R.A. Haugerud and E-an Zen 323 PART III...Sciences, 142432 Chernogolovka, Moscow district, USSR T. Baller Institut fir Mineralogie, Ruhr-Universitat...California 90024-1567, USA Department of Geology, Arizona State University, Tempe, AZ85281, USA Department of |  | | Book | | Burgerhartstraat 2 5 P.O. Box 2 1 1 , 1 OOO AE A m s t e r d a m , The Netherlands Distributors for the...retrieval s y s t e m or transmitted in any f o r m or by any means, electronic, mechanical, p h o t o c o p...i n g , recording or otherwise, w i t h o u t the prior w r i t t e n permission of the publisher, Elsevier...Engineering Division, P.O. Box 3 3 0 , 1 0 0 0 A H A m s t e r d a m , The Netherlands. Special regulations for...U.S.A. - This publication has been registered w i t h the Copy right Clearance Center Inc. (CCC), Salem |
|
