 | | Journal (article/letter/editorial) | | JUAN COUNTY, COLORADO B A R B A R A and J O H N M U N T Y A N 6978 Wapiti Court Boulder, Colorado 80301...material has been obtained from a number of San Juan County mines and prospects during the last decade, in...almost ceased. COLORADO S A N J U A N C O U N T Y L I E S in southwestern Colorado. Some of the state's...vicinity of Silverton, the principal town in the county. The American Tunnel, located just north of town...of the Sunnyside mine complex and has been the major source of specimens in the county. Most museums and |  | | Journal (article/letter/editorial) | | Although Colorado may be most noted for rhodochrosite or amazonite, the many varieties and associations...a k e w o o d , Colorado 80225 DIANNE L. K I L E 333 S a l e m Street Aurora, Colorado 80011 C O L O...above sea level; with more than eight hundred mountain peaks exceed ing 11,000 feet, the average elevation...and J. A. Mur phy for an update to Minerals of Colorado: A 100-Year Record (Eckel, 1961). 374 ROCKS... Quartz was a familiar gemstone to many early Colorado residents, as documented by an extensive body |  | | Report (issue) | | AND ORE DEPOSITS OF THR BRECKENRIDGE DISTlliCT, COLORADO BY :b_,REDERICK LESLIE RANSOME 'f3lfWASHINGTON........................................ . Hoosier Pass Eection .. _................ _ . ___ .............__ .............. _·_ .......... . Cause of the red color ........ _.. _............. _.................. ---·---- .... ·----- ..... ___ .......... Sphalerite ..... __ ......... _...•......... _............Alteration of monzonite porphyry of the Wellington mine ___ .................. __ ............ __ . . . |  | | 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 |  | | Report (volume) | | Springs District Clear Creek and Gilpin Counties, Colorado GEOLOGICAL (=) I o 00 SURVEY Prepared on...District Clear Creek and -i ;i ?i Gilpin Counties, Colorado By ROBERT H. MOENCH and AVERY ALA DRAKE, JR. ..._________ __________________________________ Sphalerite. _________.__ -_______---_-_-____________'___-_--Galena... PLATE 1. Map of the Idaho Springs district, Colorado, showing location of mines and distribution of...localities, and molecular percentage of FeS in sphalerite.____---______-__ Page 4 5 34 41 56 57 68 74 |  | | Report (issue) | | Springs District Clear Creek and Gilpin Counties, Colorado Descriptions and Kapa By Robert H. Moench and...however, and at the close of the decade only one mine--the Bald Eagle was being worked for its precious-...report, 135 mines and prospecLa cire described. The mine*, ami prospects described are those that were accessible...^ ^ » » CL O OQO3*<"OT3P4 0^- C rt OPENING OF MINE OR PROSPECT LOCATION ON FIGURE 1 DESCRIPTION ON...tn X3 TJ t~< O O i~I W O r~\ Bullion King No. 3 adit Bullion King shaft---Calvin shaft----------Camp |  | | Book | | at aks SUMMIT AGold Rush History of Summit County, Coldrado By Mary Ellen Gilliland Copyright 1980...Press Box 499 Silverthome, Colorado 80498 iv For the people of Summit County, past and present, and...Nineteen Summit Map Bibliography Index This Is Summit County Before the Rush Began: The Rocks That Made the...Howard Giberson, Frisco, and Penny Lewis, Copper Mountain, who read sections of the book to verify historical...ate “step eae ated Author’s Note An 1881 Colorado mine town newspaper made this editorial jab at visiting |  | | Report (issue) | | QlJADRANGLE (TOGETHER 'VITH THE EMPIRE DISTRICT) COLORADo· BY JOSIAH E. SPURR AND GEORGE H. GARREY WITH..................._.......... . Distribution in Colorado ................................................Boulder County.............. . . . . . . . . . . . ......... . ....... . 103 Ores in Gilpin County ........................... . 103 Orcs in Clear Creek County ............................ . 103 Ores from the............................................ . 125 Mine waters ........................................ |  | | Report (Issue volume) | | accumulating steadily since 1853, when the first mine (a coal property) was developed. Actually it antedates................................ . Copper-Stevens County ....................... . Lode gold ....................................... . Lode gold-Stevens County ..................... . Placer gold ................ .. Lead-Pend Oreille County ..................... . Lead-Stevens County ........................................................ . Silver-Stevens County ........................ . Tin, titanium ..... |  | | Report (volume) | | prospect 29 Breccia pipe deposits 30 Skyline mine 30 Blackjack mine 30 Chicago and Last Hope mines 31 Significance...mining district, within which only the White Pine mine, outside the study area, was producing ore during...Montana. Skyline mine, fig. 2, Joe. 4) and the north margin (near and south of the Chicago mine, (Joe. 5)....respectively) do not appear related to any major mine. Aeromagnetic anomaly and rock magnetic data suggest...MINERALIZATION e URANIUM AND TIIORIUM ANOMALIES ~ MINE LOCALITIES 1. Jackson Creek 6. Nursery Creek |  | Klepper, Montis Ruhl, Ruppel, E.T., Freeman, V.L., Weeks, R.A. (1971) Geology and mineral deposits, east flank of the Elkhorn Mountains, Broadwater County, Montana. Professional Paper 665. US Geological Survey doi:10.3133/pp665 | Report (issue) | | East Flank of the Elkhorn Mountains, Broadwater County, Montana GEOLOGICAL SURVEY PROFESSIONAL PAPER...East Flank of the Elkhorn Mountains, Broadwater County, Montana By M. R. KLEPPER, E. T. RUPPEL, V. L...._ Pilgrim Dolomite __________________________ _ Red Lion and Maywood Formations---------~ Jefferson Dolomite..._ Kootenai Formation _______________________ _ Colorado Formation_-_-- __________________ _ Lower black...and parts of the Colorado and Morrison Formations_______________________ 4. Colorado Formation near south |  | | Report (issue) | | Deposits Central Part of the Front Range Mineral Belt Colorado By P. K. SIMS and others GEOLOGICAL SURVEY PROFESSIONAL...____________________________ _ West Flack mine __________________ _ ~ercer County mine ______________ -German and Belcher...Iron mine, by A. A. Drake, Jr ___________ _ Jefferson-Calhoun vein _________________ _ Kirk mine ____..._______ _ Old Town mine, by A. A. Drake, Jr ______ _ Springdale (Gold Rock) mine, by A. A. Drake, J r...r ________________________ ---Telegraph mine ________________________ _ Wood vein ____________________________ |  | | Report (issue) | | Ridge prospect Breccia pipe deposits Skyline Mine Blackjack Mine Chicago and Last Hope Mines Group I - Precious-...(Mo-W-Nb-La-Y-Th) Cont inued Hidden Lake Lava Mountain area T? r\ ** r\ -rt JL>vJLL/ll « Continued...Turnley Ridge stock Geology of Skyline mine area Geology of Black Jack mine Beaver Creek district Elkhorn district...(north) Lame Deer mine Sawmill Creek prospect Silver Saddle mine Vosburg mine G and D mine and Louise shaft...shaft C and D mine, main adit -- ,3 £ <* J.i. OTi ITl xTT G 33. North Louise prospect - - Q *T /» |  | | Journal (volume) | | Flotation Processes at F. II. Jackson Proprietary Mine, He Treatment at G. D. Del prat Brown, Walter 8...Changes at Cherry Creek John A. Reld The Vulture Mine C. W. Purlngton Arnold, C. Everard The Sherman Concentrating...Channels of 567 Copper In Shasta County Copper of Shasta County (I, The Mineral Industry During...Hecla Editorial Campbell, Donald F copper ol Shasta County, California (1,11) anadlan .Mining Institute, The...Walter 189 284 The 320 Boarding House, The Mine F. N. Fletcher Bob-Tailed Words. Those Matt. W. |  | | Journal (volume) | | and after a run of four hours, seven bars of bullion, weighing 700 pounds, were drawn. The average amount...sufficient to store $60,000,000. THE Young America quartz mine of Sierra City has become a solid dividend payer...We note in the North San Juan Times, of Nevada county, that a hydraulic gravel elevator is soon to be...Gravel Mining Company, at North Bloomfield, Nevada county, this State. We have interviewed the manager of...Mammoth Bar, Placer county, and on the ground of the Miocene Mining Company, in Butte county, and upon the |  | | Journal (volume) | | 308. Accidents, Ambulance Work in Mine, 245. Accidents, Coal Mine, Their Causes and Prevention, 626....Accidents in Nova Scotia Mines, 280. Accidents. Mine, Prevention of, 222. Adler, H. G. V., on "Concerning...Fuel Co., 669. Alberta Government Examination for Mine Managers. 427-30. Alberta, Labor Troubles in Coal...Pigments, 691. Aranyl Molybdate, 691. Arlington Mine, 512, 543. Arsenic in Ores, A Rapid Method for the... 636. Atlin, Hydraulic Operations. 639a. Aurora Mine, 606a. Australia, Mineral Output, 91. Australia |
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