 | | Report (issue) | | GEORGETOWN QlJADRANGLE (TOGETHER 'VITH THE EMPIRE DISTRICT) COLORADo· BY JOSIAH E. SPURR AND GEORGE H. GARREY..................._.......... . Distribution in Colorado ................................................Boulder County.............. . . . . . . . . . . . ......... . ....... . 103 Ores in Gilpin County ............................... . 103 Orcs in Clear Creek County ............................ . 103 Ores from...Argentine to the Tenmile district .. : ............... . 104 Ores of the Tenmile 'district ................. |  | | Report (volume) | | Geology of the Idaho Springs District Clear Creek and Gilpin Counties, Colorado GEOLOGICAL (=) I o 00...of the Idaho Springs District Clear Creek and -i ;i ?i Gilpin Counties, Colorado By ROBERT H. MOENCH and...____ Mines and prospects in the Idaho Springs district ________________ Previous studies.___________...pocket] PLATE 1. Map of the Idaho Springs district, Colorado, showing location of mines and distribution...geologic map and sections of the Idaho Springs district. 3. Geologic section along the Big Five tunnel |  | | Report (issue) | | ALONG THE FRONT RANGE FROM DENVER TO BOULDER, COLORADO Clay Minerals Society 39th Annual Meeting and...Geological Survey Open-File Report 02-413 Denver, Colorado 2002 U.S. DEPARTMENT OF THE INTERIOR GALE A........................ 11 The clay industry in Colorado ..................................... 13 Rubey............... 47 Idaho Springs and Central City mining districts ....................... 47 Argo mill.......................... 67 Nederland; mining in Boulder County .............................. 67 Boulder |  | | Journal (article/letter/editorial) | | secondary phosphate minerals. Although some pegmatite mining for feldspar still continues (Jacobson 1994). the...which has operated for more than 120 years, most mining in the area peaked in the late 1800s and early...and fewer chances to obtain any. However, some mining, mineral exploration, and mineral collecting continues...FiridofGt~rnSphultirite ut IIIP Bulinut Zinc Mine, St. Luwrence County, tditor of NPW b r k ” unrl iipptwwl in the No~~er...additions. Mlneral Index by Counties Brule County Elm Creek, IS mi. S. of Chamberlain, near junction with |  | | Report (volume) | | Geology of Uranium Deposits in the Front Range, Colorado By P. K. SIMS and D. M. SHERIDAN With sections...mines_______________________________________ Boulder CountY----------------------------------~-----------Jamestown...Description of principal mines-Continued Boulder County-Continued Other areas __________________________...F. B. Moore______________________________ Clear Creek CountY------------------------------------------Idaho...__________ ------_____________________ 71 72 Gilpin CountY-----------------------------------------------Central |  | | Report (issue) | | Geology and Ore Deposits of the Front Range Colorado By T. S. LO\'ERING and E. N. GODDARD GEOLOGICAL...cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund ~ oopr is...__________________________________________ _ 1 Summary of mining districts---.---------------------Introduction...hornblende gneiss ____________ _ Quartzite at Coal Creek ________________ _ Igneous rocks _____________________________...Quartz diorite and associated hornblendite_ Boulder Creek granite _________________ _ Pikes Peak granite |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ......................................339 by M. I. Jacobson The San Juan Mountains of Colorado ..................................349 by J. A...10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo by John...Natural History for conceiving the idea of a second Colorado issue and for helping a great deal in bringing |  | | Report (issue) | | and Ore Deposits of the Chicago Creek Area Clear Creek County Colorado GEOLOGICAL SURVEY PROFESSIONAL...and Ore Deposits of the Chicago Creek Area Clear Creek County Colorado By J. E. HARRISON and J. D. WELLS...and ore deposits of the Chicago Creek area, Clear Creek County, Colorado, by J. E. Harrison and J. D. Wells...Geology Colorado Clear Creek Co. 2. Ore deposits Colorado Clear Creek Co. 3. Petrology Colorado Clear Creek..._---_-__-_--__________-____________--. History of the district-______________________________ General geology |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |  | | Journal (article/letter/editorial) | | Geological Survey, P.O. Box 25046, MS 963, Denver, Colorado 80225 Geological Survey, 904 West Riverside Avenue...belt, including the deposits of the Blackbird district, have been analyzed for their sulfur, carbon,...values are nearly uniform throughout the Blackbird district, with a mean value for cobaltite (CoAsS, the main...deposits. Carbon and oxygen isotope compositions of siderite, a mineral that is widespread, although sparse...origin. Several lines of evidence suggest that siderite postdated the emplacement of cobalt and copper |  | | Report (issue) | | Prospects, Idaho Springs District Clear Creek and Gilpin Counties, Colorado Descriptions and Kapa By...Commission Introduction The Idoiho Springs mining district forms an important segment of tae Front Range...west, and southwest. The adjacent Central City district, which produced ores valued at more than $100...clearly the most important district in the mineral belt The Idaho Springs district from 1860 to 1959 produced... and zinc add value to the ores in most areas. Mining activity in the Idaho Springs and adjacent districts |  | Lund, K., Tysdal, R. G., Evans, K. V., Kunk, M. J., Pillers, R. M. (2011) Structural Controls and Evolution of Gold-, Silver-, and REE-Bearing Copper-Cobalt Ore Deposits, Blackbird District, East-Central Idaho: Epigenetic Origins. Economic Geology, 106 (4) 585-618 doi:10.2113/econgeo.106.4.585 | Journal (article/letter/editorial) | | REE-Bearing Copper-Cobalt Ore Deposits, Blackbird District, East-Central Idaho: Epigenetic Origins K. LUND...Survey, MS 973, Federal Center Box 25046, Denver, Colorado 80225 Geological Survey, MS 926A, National Center...(± Ag ± Ni ± REE) ore deposits of the Blackbird district, east-central Idaho, have previously been classified...section. New studies indicate that, across the district, mineralization was introduced into the country...veins (and alteration zones) and minor albite and siderite veinlets maintain consistent order and sulfide |  | | Report (volume) | | important were those in the Central City district, Colorado, from which about 300 tons of high-grade...Utah; the Schwartzwalder (Ralston Creek) and Los Ochos mines, Colorado; the Early Day and Buckhorn claims...deposits in the Dripping Spring quartzite, Gila County, Ariz. According to Nininger (1954, p. 43), as...areas in Saxony; the Beaverlodge district, Canada; the Cornwall district, England; the Guarda and adjacent...States except for some in the Central City district, Colorado were discovered since the mid-1940's. The |  | | Report (issue) | | organization is carrying on for the direct advancement of mining interests throughout the country than can readily........ 932 Hague, A.; Weed, National Park; no mining W. H.; . Iddings, permitted. J.P. Lindgren, W.... No. 38. Economic geology of the Bingharn mining district, Utah, by J. M. Boutwell, Arthur Keith, and...Tonopah mining district, Nevada, by J. E. Spurr. No. 43. Copper deposits of Clifton-Morenei district, Arizona...Ulrich. * Folios: No. 120. Silverton quadrangle, Colorado, by Whitman Cross, Ernest Howe, and F. L. Ransome |  | | Journal (article/letter/editorial) | | 2015 Minerals of the Gilman District and Eagle Mine Eagle County, Colorado WILLIAM J. WARREN JR. Front...632 Golden, Colorado 80402 wjwmineral@aol.com ED PEDERSEN 11582 Ash Circle Thornton, Colorado 80233 pedersencpg@aol... ROCKS & MINERALS T he Gilman district, in Eagle County, Colorado, and its premier mineral specimen...Denver. The Gilman district was originally known as the Battle Mountain district and was later referred...referred to as the Red Cliff district. Much of the older (pre-1940s) literature refers to the area by one |  | | Report (issue) | | Deposits Central Part of the Front Range Mineral Belt Colorado By P. K. SIMS and others GEOLOGICAL SURVEY PROFESSIONAL...______________________________ _ History of uranium mining and production ____________ _ Geologic setting...__________ - ___ - ________ -----------Central City district _____________________ ------Quartz Hill-upper... _ West Flack mine __________________ _ ~ercer County mine ______________ -German and Belcher mines ______________...descriptions-C~:mtinued Lawson-Dumont-Fall River district, by C. C. Hawley and F. B. Moore _____________________________ |  | | Report (volume) | | Bulletin 732 GEOLOGY AND ORE DEPOSITS OF SHOSHONE COUNTY, IDAHO BY JOSEPH B. UMPLEBY AND E. L. JONES...Osburn fault____________________________ Placer Creek fault___________________________ Other faults__...Pottsville_________________ 87 Slate Creek _______________________ Placer Creek ______________________ Wallace...mine_____________________ Deposits of the Pine Creek district____________ Copper deposits ______ ______...character__________ Form and distribution____________________. Siderite veins_________________________ Southern area _____ |  | | Journal (article/letter/editorial) | | ARGILLIC ALTERATION AND URANIUM EMPLACEMENT ON THE COLORADO PLATEAU by PAUL F. KERR AND MARIAN B. JACOBS...recognized in association with uranium deposits on the Colorado Plateau and along border areas. Alteration and...and opal; the carbonates, calcite, dolomite and siderite. The identification of mica polymorphs close to...conditions. INTRODUCTION HOST rock alteration on the Colorado Plateau and along border areas indicates that...a problem in sedimentary strata. Although the Colorado Plateau is largely an area of sedimentary strata |  | | Report (issue) | | Minnesota Latah County, Idaho Spokane County, Wash. lone, Calif. Mesa Alta, N.M. Underclays Clear-field, Pa...districts in Eastern United StatesMissouri Colorado King County, Wash. Cowlitz, Wash. Hobart Butte, Oreg...Generalized geologic section, Macon-Gordon kaolin district, Georgia Electron micrograph of kaolin of Eocene...residual kaolin deposits in the Arkansas bauxite district Diagrammatic section of kaolin deposits in the...Brongniart from a Pennsylvanian coal bed, Leslie County, Ky., showing delicate outer cortical tissue _ |  | | Report (issue) | | SOME DEPOSITS OF MANGANESE ORE IN COLORADO. By EDWARD L. JONES Jr. INTRODUCTION. For many years large...parts of the lead-silver deposits of the Leadville district, Colo., for use as flux, and from time to time...ore has been converted into spiegeleisen by the Colorado Fuel & Iron Co., at Pueblo. The first shipment...shipment of high-grade manganese ore from Colorado was made in 1915, but the known highgrade deposits are small...the United States Geological Survey and to the Colorado Geological Survey. In order to obtain data for |  | | Report (issue) | | Ore Deposits of the Oilman District, Eagle County, Colorado GEOLOGICAL SURVEY Study made in cooperation...cooperation with the Colorado Mining Industrial Development Board PROFESSIONAL PAPER 1017 Ore Deposits...Deposits of the Oilman District, Eagle County, Colorado By THOMAS S. LOVERING, OGDEN TWETO, and T. G. LOVERING... 1017 Study made in cooperation with the Colorado Mining Industrial Development Board Description of...geologic setting of a mining district that is the leading source of zinc in Colorado and an important source |  | | Report (issue) | | . . . . . . . . . . . . . . . . . 1 Chapter I. Mining Districts of Counties and the State of Utah. .... . . . . . . . . . . . . . . . . . . . . . . 1 County Listings. . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . 1 Chapter II. Mining Districts of Utah . . . . . . . . . . . . . . .... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 7 Beaver County . . . . . . . . . . . . . . . . . . . . . . . |  | | Report (issue) | | products of bauxite treatment at the Hurricane Creek plant, R.eynolds Metal Co. . . . . . . . . . . ...concentrates from black sands from the Hurricane Creek plant, Reynolds Metal Co. . . . . . . . . . . ....niobium to be concentrated chiefly in an ilmenite fraction containing more than 40 percent Ti02 and as much...permission to publish the results obtained. Alcoa Mining Co., American Cyanamid Co., Dulin Bauxite Co.,...the niobium and its distribution in the bauxite district and among the minerals of the bauxite.· Plate |  | | Report (issue) | | Geological of America, Boulder, INC. Place Colorado Printed in the United States by Edwards Inc...8137-1131-2 Published THE GEOLOGICAL Society Card Colorado Michigan Soctety 80301 48104 The publication...no OIL ORO OIG ZoZ 292 Boulder County Tellurides .... 294 Boulder County Tungsten ...... eeoeeesee 296...eecoeeceoeeeoeoeceee 302 se ee 305 Freeland-Chicago Creek ....see. e@eoeoceeee 307 Reina Ta ease eial(cilake...e@eeeeeeoe 323 COLORADO PLATEAU (COLORADO-UTAH-NEW MEXICO-ARIZONA) ... 323 A. Rifle area, Colorado «0s... 323 |  | | Report (volume) | | veins in the northeastern part of the Lemhi Pass district J UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...-----------------------------Future of thorium mining ................ -----------------------------...-----------------------· Conglomerate of Flume Creek.___________________________________________________...Lemhi Pass quadrangle, Page Lemhi County, Idaho, and Beaverhead County, Mont ..... Jn pocket FIGURE 1....only a part of the much larger Lemhi Pass thorium district, is the area of the most abundant thorium veins |
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