 | | Report (issue) | | GEOLOGYOF THEGEORGETOWN QlJADRANGLE(TOGETHER 'VITH THE EMPIREDISTRICT)COLORADo·BYJOSIAH E. SPURR...............Topography and geography of theGeorgetown quadrangle ....................................................................... ___ ... .Biotite-sillimanite schist ......................................................... ·.............. .Biotite schist ....................... ·.......................... __ .... .Gneissoid granite (mashedbiotite granite) ..................................... |  | | Book | | .3COLORADO.ofCOLORADO.J. S. lGEORGETOWN, COLO.GEORGETOWN COURIER PRINT.1887.3Bancroft...From a mineralogical point of view the wealth ofColorado exceeds that ofIn the metallic minerals almost...referred to in the following pagesProceedings of theColorado Scientific Society.Proceedings of the Academy...Bulletins of the U. S. Geological Survey.J.GEORGETOWN,COLORADO,January, 1887.S.RANDALL.:MINERALS...gravel of streams and inveins.The veins of GilpinCounty are especially noteworthyfor the amount of gold |  | | Report (issue) | | Geologyand Ore Depositsof the Front RangeColoradoBy T. S. LO\'ERING and E. N. GODDARDGEOLOGICAL...in cooperation with theColorado State Geological Survey Boardand theColorado Metal Mining Fund~ oopr...hornblende gneiss ____________ _Quartzite at CoalCreek ________________ _Igneous rocks _____________________________...BoulderCreek granite _________________ _Pikes Peak granite _____________________ _SilverPlume granite..._____________________ _Copper deposits in JeffersonCounty __ _F. M.D. property _____________ _Malachite |  | | Report (issue) | | Minerals ofColorado:A 100- Year RecordBy EDWIN B. ECKELGEOLOGICALSURVEYBULLETIN1 1 14A...knowledge____________________________________Future ofColorado mineralogy______________________________________...mineral localities and metallic mineraldeposits ofColorado ________________________________ In pocketIII...mineral localities and metallic mineral depositsofColorado, has not been included in this reprint. Many of...especially Fischer and others, 1946).MINERALS OFCOLORADO: A 100-YEAR RECORDBy EDWIN B. EcKELABSTRACT |  | | Report (issue) | | the. Leadville,Colorado, miningdistrict.Prepared in cooperation with theColorado State Geological...Geological Survey Board andtheColorado Metal Mining FundUNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON..._Pikes Peak(?) granite- __________________SilverPlume(?) granite__ _______ _________Quartz-mica...on Mount Evans_ ________________Faults on DyerMountain ________________Fault complex on East Ball Mountain_____...Sherman__ _ ___________Faults on West SheridanMountain _______Faults on Mount Sheridan. ______________ |  | | Corporate Document | | 2012Copper King Mine,Silver CrownDistrict, Wyoming (Preliminary Report)W. Dan HauselIndependent...Arizona11/14/2012COPPER KING MINE,SILVER CROWNDISTRICTW. Dan Hausel, Independent GeologistGilbert...Gilbert, ArizonaIntroductionTheSilver Crowndistrict (also known as Hecla) lies 20 miles west of Cheyenne...along the eastern flank of the Laramie Range. Thedistrict is visible on GoogleEarth (search for ‘Hecla...Nearly all mining and exploration activity in thedistrict centered on the Copper King mine and the Hecla |  | | Journal (issue) | | meetingthe manufacturerscokethe ConnellsvilleDistrict provedfailure, because the representation was...Louisville, Ky., and vicinity.Mr.Frost, care BostonColorado Smelting Company, Argo, Colo.,ouraccredited...Menthe BasicProduction... ........ProcessSilver ProductionElectrolyticthe Precious MetalsBolivia...Temperature fromUtilizationOre-DepositsSummitGrandeCounty,The Iron OresNevada.338Wyoming.338North...Gold andSilver Stocks.......Europe......Germany{338totheSilver.338District, Riothe |  | | Report (issue) | | percent), and reddish-brown partially oxidizedbiotite (0-2 percent).TplaMaximum thickness about 1...acces38 40sory clinopyroxene, ferric oxides, andbiotite. Flow overlie~ paleof zoned andesine (Anred altered...altered latite flows (Tpl) along·South PerchaCreek (sees. 16 and21, T. 16 S., R. 8 W.) where the thickness...percent).28 30Accessory minerals are orthopyroxene,biotite, oxyhornblende, and(Anferric oxides.Vitrophyre...thickness about200 ft (60 m) near Deer Hill andSherman MountainTrRhyolite plugs and dikesRhyolite plug |  | | Report (issue) | | DireetorATIONS OF THEPALEOZOIC FOMOSQUITO RA GE,COLORADOBYJ. HARShorter contributionsJOHNSONgeneral...fWeber grits on South MosquitoCreek; B,tWeber shales on LondonMountain; C,Manitou limestone with chert;...near TroutCreek; B, Arkosicgrit from upper part of Weber (?) formation in Almadistrict __________________...Fremont, Harding, and part ofManitou along TroutCreek near old Newett station; B, Log of silicified wood...PALEOZOIC FORMATIONS OF THE MOSQUITO RANGE,COLORADOBy J.HARLANABSTRACTThe Mosquito Range is |  | | Report (issue) | | theRockyMountain Section meetingof The Geological Society of AmericaBoulder,Colorado, 1973Edited...SOCIETY OF AMERICA, INC.3300 Penrose PlaceBoulder,Colorado 8030124 AUG 1990The Memoir series was originally...northwesternColorado and its implicationsconcerning tectonism and the origin of theColorado River system...Cenozoic sedimentation and deformation in northernColorado andAGIOS ATCAGwsjaceeet ty pes wien ano os Kar...helt249Neogene tectonism in south-centralColorado...a2)7min4 amie a-=a,geek@a |  | | Report (issue) | | Platte-Arkansas divide,southern Denver basin,Colorado, by P. E. Soister_ ______ ·_____________________...part of the Roberts thrust, Toiyabe Range, LanderCounty, Nev., by J. H.Stewart and A. R. Palmer _____...Ordovician tectonism in the Ruby Mountains, ElkoCounty,· Nev., by Ronald Willden and R. W. Kistler__ _...tin minerals in gold- andsilver-bearing sulfide ores, Ohio miningdistrict, Marysvale, Utah, by A. S...of base metals andsilver in the southern Santa Rita Mountains, Santa CruzCounty, Ariz., byHarald |  | | Journal (issue) | | thanthe upperlevels.The entire surfacethedistrictcovered with recent depositsclay andlimestone...external interferenceand thoughlater years thedistrict haslost its essentially exotic appearance, the...aboutper cent.the tons; fine gold, 2000 oz.;silver (996 fine), turns.article, were imported1907...crosscuts,($20,921), Germany being the leadingandsilver which occurthe matte. The2700 ft.;winzes and...GowgandadistrictOntario has just beenissuedthe Geological SurveyCanada. Thisdistrict, about which |  | | Report (issue) | | INTERIORGEOLOGICAL SURVEYMINERAL RESOURCES OF ELKOCOUNTY, NEVADAByRoscoe M. SmithPrepared in cooperation...Alderdistrict-19Auradistrict -21Beaverdistrict25BlackMountaindistrict27Bootstrapdistrict27...27Burnerdistrict28Burns Basindistrict-- -- 30Carlindistrict32CaveCreekdistrict----- 35Charleston...Coal Minedistrict~ 38Contactdistrict- 39Cornucopiadistrict - -45CorralCreekdistrict- - 48Decoy...Decoydistrict48Delanodistrict49Delker district53Dividedistrict- - 54Dolly Vardendistrict--54 |  | | Report (issue) | | Mail Stop 954, Federal Center, Box 25046Denver,Colorado 80225INVENTORY OF CLAY-RICH BEDROCK AND METAMORPHIC...and acknowledgmentsClarkCountyCL-1: Spring Mountains localityElkoCountyEL-1: Independence Mountains...localityEL-4: Pilot Range localityEL-5: SpruceMountain and Pequop Range localityEL-6: Pirion Range locality...localityEurekaCountyEU-1: Diamond Mountains localityEU-2: Prospect Ridge localityLincolnCountyLI-1: Southern...localityLI-2: Southern SchellCreek Ranoe localityLI-3: Dutch JohnMountain localityLI-4: Bristol-Highland |
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