Report on the Development of the Mineral
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Segment 25 of the Colorado Trail Starts at Little Molas Lake. Hikers
! COLORADO TRAIL (SECTION NORTHWEST OF LITTLE MOLAS LAKE), SILVERTON, COLORADO Segment 25 of the Colorado Trail starts at Little Molas Lake. Hikers (and mountain bikers) can also do day-trips on this part of the trail by starting from the Little Molas Lake parking area and heading northwest. The first part of this section of the Colorado Trail passes beneath Sultan Mountain and the Grand Turk. The views from this trail are spectacular, although the wildflowers aren't quite as nice as they were on the other two hikes we did in this area after this one (Coal Bank Pass and Snowdon Meadows). We had hoped to continue further along the trail than we did, but we were not yet aware how early in the afternoon thunderstorms can appear in this area (and the trail goes along an exposed ridge). ! ! Driving by the Hermosa Cliffs on our way north along the San Juan Skyway from Durango. ! " Engineer Mountain is visible for some distance on this drive. ! " This is the southwestern part of the ridge by Coal Bank Pass. ! " ! ! ! ! ! ! Looking southeast at what I think must be North Twilight Peak. Crater Lake should be in the small valley just to the left of the peak. ! " Looking north towards the North Lime Creek valley, which is just west of Sultan Mountain and the Grand Turk (which are two peaks visible in all three of my July 2017 trip reports from this area). ! " Looking north again, towards Molas Pass (right of center). ! " Looking northeast, with Snowdon Peak to the left in this photo (I am not sure what the peaks to the right of center and which are just barely visible in the background are called). -
Sunnyside 29 SGC-042125 Chapter VII Appendices
A PP E NDIX 7A: GEOLOGY APPENDIX 7B: HISTORY APPENDIX 7C: MINING HISTORY o j tlu* Animus /iu vr' A PP E N D I X 7 A O verview of Geology Anim as River W atershed Above Silverton Prepared for the Animas River Stakeholders Group Use Attainability Analysis Prepared By B.K Stover Colorado Division of Minerals and Geology VOLCANIC HISTORY OF THE SILVERTON CALDERA Water Quality Bedrock Geology Precambrian Metamorphic Roclcs Paleozoic Sedimentary Rocks Upper Paleozoic And Mesozoic Sedimentary Rocks ' Tertiary Sedimentary Rocks Tertiary Volcanic Rocks Surficial Geology Structural Geology nydrothcrmal Alteration CEMENT CREEK SUB-BASTN Stratigraphy Structural Geology nydrothcrmal Alteration Surficial Geology ROSS BASIN WATERSHED Bedrock Geology Structural Geology Itydrothermal Alteration Ore Mineralization Surficial Geology CEMENT CREEK-BONITA PEAK WATERSHED AREA Bedrock Geology Structural Geology Hydrothermal Alteration Ore Mineralization Surficial Geology SOUTH FORK CEMENT CREEK AREA 19 Location 19 Bcdrock Geology 19 Structural Geology 19 Hydrothermal Alteration 20 Ore Mineralization 20 Surficial Geology 20 PROSPECT GULCII-GEORGIA GULCH AREA 21 Location 21 Geologic Setting 21 Bedrock Geology 21 Structural Geology 22 Hydrothermal Alteration 22 Ore Mineralization 22 Surficial Geology 23 LOWER CEMENT CREEK AREA 24 Location 24 Geologic Setting 24 Bedrock Geology 24 Structural Geology 24 Hydrothermal Alteration 24 Ore Mineralization 25 Surficial Geology 25 ANIMAS RIVER HEADWATERS AND BURROWS CREEK 26 Location 26 Geologic Setting 27 CALIFORNIA GULCH -
Multiple Intrusions in the San Miguel Mountains, Colorado Calvin S
New Mexico Geological Society Downloaded from: http://nmgs.nmt.edu/publications/guidebooks/19 Multiple intrusions in the San Miguel Mountains, Colorado Calvin S. Bromfield and Alfred L. Bush, 1968, pp. 94-99 in: San Juan, San Miguel, La Plata Region (New Mexico and Colorado), Shomaker, J. W.; [ed.], New Mexico Geological Society 19th Annual Fall Field Conference Guidebook, 212 p. This is one of many related papers that were included in the 1968 NMGS Fall Field Conference Guidebook. Annual NMGS Fall Field Conference Guidebooks Every fall since 1950, the New Mexico Geological Society (NMGS) has held an annual Fall Field Conference that explores some region of New Mexico (or surrounding states). Always well attended, these conferences provide a guidebook to participants. Besides detailed road logs, the guidebooks contain many well written, edited, and peer-reviewed geoscience papers. These books have set the national standard for geologic guidebooks and are an essential geologic reference for anyone working in or around New Mexico. Free Downloads NMGS has decided to make peer-reviewed papers from our Fall Field Conference guidebooks available for free download. Non-members will have access to guidebook papers two years after publication. Members have access to all papers. This is in keeping with our mission of promoting interest, research, and cooperation regarding geology in New Mexico. However, guidebook sales represent a significant proportion of our operating budget. Therefore, only research papers are available for download. Road logs, mini-papers, maps, stratigraphic charts, and other selected content are available only in the printed guidebooks. Copyright Information Publications of the New Mexico Geological Society, printed and electronic, are protected by the copyright laws of the United States. -
Ski Development in National Forests Harris D
University of Colorado Law School Colorado Law Scholarly Commons The ubP lic Lands During the Remainder of the 20th Getches-Wilkinson Center Conferences, Century: Planning, Law, and Policy in the Federal Workshops, and Hot Topics Land Agencies (Summer Conference, June 8-10) 6-10-1987 Ski Development in National Forests Harris D. Sherman David S. Neslin Ian K. Whitlock Follow this and additional works at: http://scholar.law.colorado.edu/public-lands-during- remainder-planning-law-and-policy-in-federal-land-agencies Part of the Administrative Law Commons, Animal Law Commons, Animal Studies Commons, Aquaculture and Fisheries Commons, Courts Commons, Dispute Resolution and Arbitration Commons, Energy Law Commons, Energy Policy Commons, Environmental Law Commons, Environmental Policy Commons, Forest Management Commons, Indian and Aboriginal Law Commons, Judges Commons, Jurisdiction Commons, Land Use Planning Commons, Legislation Commons, Litigation Commons, Natural Resources and Conservation Commons, Natural Resources Law Commons, Natural Resources Management and Policy Commons, Oil, Gas, and Energy Commons, Oil, Gas, and Mineral Law Commons, Peace and Conflict Studies Commons, Politics Commons, Property Law and Real Estate Commons, Recreation, Parks and Tourism Administration Commons, Soil Science Commons, State and Local Government Law Commons, Water Law Commons, and the Water Resource Management Commons Citation Information Sherman, Harris D.; Neslin, David S.; and Whitlock, Ian K., "Ski Development in National Forests" (1987). The Public Lands During the Remainder of the 20th Century: Planning, Law, and Policy in the Federal Land Agencies (Summer Conference, June 8-10). http://scholar.law.colorado.edu/public-lands-during-remainder-planning-law-and-policy-in-federal-land-agencies/16 Reproduced with permission of the Getches-Wilkinson Center for Natural Resources, Energy, and the Environment (formerly the Natural Resources Law Center) at the University of Colorado Law School. -
Description of the Telluride Quadrangle
DESCRIPTION OF THE TELLURIDE QUADRANGLE. INTRODUCTION. along the southern base, and agricultural lands water Jura of other parts of Colorado, and follow vents from which the lavas came are unknown, A general statement of the geography, topography, have been found in valley bottoms or on lower ing them comes the Cretaceous section, from the and the lavas themselves have been examined slopes adjacent to the snow-fed streams Economic Dakota to the uppermost coal-bearing member, the only in sufficient degree to show the predominant and geology of the San Juan region of from the mountains. With the devel- imp°rtance- Colorado. Laramie. Below Durango the post-Laramie forma presence of andesites, with other types ranging opment of these resources several towns of tion, made up of eruptive rock debris and known in composition from rhyolite to basalt. Pene The term San Juan region, or simply " the San importance have been established in sheltered as the "Animas beds," rests upon the Laramie, trating the bedded series are several massive Juan," used with variable meaning by early valleys on all sides. Railroads encircle the group and is in turn overlain by the Puerco and higher bodies of often coarsely granular rocks, such as explorers, and naturally with indefinite and penetrate to some of the mining centers of Eocene deposits. gabbro and diorite, and it now seems probable limitation during the period of settle- sa^juan the the interior. Creede, Silverton, Telluride, Ouray, Structurally, the most striking feature in the that the intrusive bodies of diorite-porphyry and ment, is. now quite. -
General Index
CAL – CAL GENERAL INDEX CACOXENITE United States Prospect quarry (rhombs to 3 cm) 25:189– Not verified from pegmatites; most id as strunzite Arizona 190p 4:119, 4:121 Campbell shaft, Bisbee 24:428n Unanderra quarry 19:393c Australia California Willy Wally Gully (spherulitic) 19:401 Queensland Golden Rule mine, Tuolumne County 18:63 Queensland Mt. Isa mine 19:479 Stanislaus mine, Calaveras County 13:396h Mt. Isa mine (some scepter) 19:479 South Australia Colorado South Australia Moonta mines 19:(412) Cresson mine, Teller County (1 cm crystals; Beltana mine: smithsonite after 22:454p; Brazil some poss. melonite after) 16:234–236d,c white rhombs to 1 cm 22:452 Minas Gerais Cripple Creek, Teller County 13:395–396p,d, Wallaroo mines 19:413 Conselheiro Pena (id as acicular beraunite) 13:399 Tasmania 24:385n San Juan Mountains 10:358n Renison mine 19:384 Ireland Oregon Victoria Ft. Lismeenagh, Shenagolden, County Limer- Last Chance mine, Baker County 13:398n Flinders area 19:456 ick 20:396 Wisconsin Hunter River valley, north of Sydney (“glen- Spain Rib Mountain, Marathon County (5 mm laths donite,” poss. after ikaite) 19:368p,h Horcajo mines, Ciudad Real (rosettes; crystals in quartz) 12:95 Jindevick quarry, Warregul (oriented on cal- to 1 cm) 25:22p, 25:25 CALCIO-ANCYLITE-(Ce), -(Nd) cite) 19:199, 19:200p Kennon Head, Phillip Island 19:456 Sweden Canada Phelans Bluff, Phillip Island 19:456 Leveäniemi iron mine, Norrbotten 20:345p, Québec 20:346, 22:(48) Phillip Island 19:456 Mt. St-Hilaire (calcio-ancylite-(Ce)) 21:295– Austria United States -
Geographic Names
GEOGRAPHIC NAMES CORRECT ORTHOGRAPHY OF GEOGRAPHIC NAMES ? REVISED TO JANUARY, 1911 WASHINGTON GOVERNMENT PRINTING OFFICE 1911 PREPARED FOR USE IN THE GOVERNMENT PRINTING OFFICE BY THE UNITED STATES GEOGRAPHIC BOARD WASHINGTON, D. C, JANUARY, 1911 ) CORRECT ORTHOGRAPHY OF GEOGRAPHIC NAMES. The following list of geographic names includes all decisions on spelling rendered by the United States Geographic Board to and including December 7, 1910. Adopted forms are shown by bold-face type, rejected forms by italic, and revisions of previous decisions by an asterisk (*). Aalplaus ; see Alplaus. Acoma; township, McLeod County, Minn. Abagadasset; point, Kennebec River, Saga- (Not Aconia.) dahoc County, Me. (Not Abagadusset. AQores ; see Azores. Abatan; river, southwest part of Bohol, Acquasco; see Aquaseo. discharging into Maribojoc Bay. (Not Acquia; see Aquia. Abalan nor Abalon.) Acworth; railroad station and town, Cobb Aberjona; river, IVIiddlesex County, Mass. County, Ga. (Not Ackworth.) (Not Abbajona.) Adam; island, Chesapeake Bay, Dorchester Abino; point, in Canada, near east end of County, Md. (Not Adam's nor Adams.) Lake Erie. (Not Abineau nor Albino.) Adams; creek, Chatham County, Ga. (Not Aboite; railroad station, Allen County, Adams's.) Ind. (Not Aboit.) Adams; township. Warren County, Ind. AJjoo-shehr ; see Bushire. (Not J. Q. Adams.) Abookeer; AhouJcir; see Abukir. Adam's Creek; see Cunningham. Ahou Hamad; see Abu Hamed. Adams Fall; ledge in New Haven Harbor, Fall.) Abram ; creek in Grant and Mineral Coun- Conn. (Not Adam's ties, W. Va. (Not Abraham.) Adel; see Somali. Abram; see Shimmo. Adelina; town, Calvert County, Md. (Not Abruad ; see Riad. Adalina.) Absaroka; range of mountains in and near Aderhold; ferry over Chattahoochee River, Yellowstone National Park. -
Summits on the Air – ARM for USA - Colorado (WØC)
Summits on the Air – ARM for USA - Colorado (WØC) Summits on the Air USA - Colorado (WØC) Association Reference Manual Document Reference S46.1 Issue number 3.2 Date of issue 15-June-2021 Participation start date 01-May-2010 Authorised Date: 15-June-2021 obo SOTA Management Team Association Manager Matt Schnizer KØMOS Summits-on-the-Air an original concept by G3WGV and developed with G3CWI Notice “Summits on the Air” SOTA and the SOTA logo are trademarks of the Programme. This document is copyright of the Programme. All other trademarks and copyrights referenced herein are acknowledged. Page 1 of 11 Document S46.1 V3.2 Summits on the Air – ARM for USA - Colorado (WØC) Change Control Date Version Details 01-May-10 1.0 First formal issue of this document 01-Aug-11 2.0 Updated Version including all qualified CO Peaks, North Dakota, and South Dakota Peaks 01-Dec-11 2.1 Corrections to document for consistency between sections. 31-Mar-14 2.2 Convert WØ to WØC for Colorado only Association. Remove South Dakota and North Dakota Regions. Minor grammatical changes. Clarification of SOTA Rule 3.7.3 “Final Access”. Matt Schnizer K0MOS becomes the new W0C Association Manager. 04/30/16 2.3 Updated Disclaimer Updated 2.0 Program Derivation: Changed prominence from 500 ft to 150m (492 ft) Updated 3.0 General information: Added valid FCC license Corrected conversion factor (ft to m) and recalculated all summits 1-Apr-2017 3.0 Acquired new Summit List from ListsofJohn.com: 64 new summits (37 for P500 ft to P150 m change and 27 new) and 3 deletes due to prom corrections. -
Abstracts, Posters and Program
Gold and Silver Deposits in Colorado Symposium Abstracts, posters And program Berthoud Hall, Colorado School of Mines Golden, Colorado July 20-24, 2017 GOLD AND SILVER DEPOSITS IN COLORADO SYMPOSIUM July 20-24, 2017 ABSTRACTS, POSTERS AND PROGRAM Principle Editors: Lewis C. Kleinhans Mary L. Little Peter J. Modreski Sponsors: Colorado School of Mines Geology Museum Denver Regional Geologists’ Society Friends of the Colorado School of Mines Geology Museum Friends of Mineralogy – Colorado Chapter Front Cover: Breckenridge wire gold specimen (photo credit Jeff Scovil). Cripple Creek Open Pit Mine panorama, March 10, 2017 (photo credit Mary Little). Design by Lew Kleinhans. Back Cover: The Mineral Industry Timeline – Exploration (old gold panner); Discovery (Cresson "Vug" from Cresson Mine, Cripple Creek); Development (Cripple Creek Open Pit Mine); Production (gold bullion refined from AngloGold Ashanti Cripple Creek dore and used to produce the gold leaf that was applied to the top of the Colorado Capital Building. Design by Lew Kleinhans and Jim Paschis. Berthoud Hall, Colorado School of Mines Golden, Colorado July 20-24, 2017 Symposium Planning Committee Members: Peter J. Modreski Michael L. Smith Steve Zahony Lewis C. Kleinhans Mary L. Little Bruce Geller Jim Paschis Amber Brenzikofer Ken Kucera L.J.Karr Additional thanks to: Bill Rehrig and Jim Piper. Acknowledgements: Far too many contributors participated in the making of this symposium than can be mentioned here. Notwithstanding, the Planning Committee would like to acknowledge and express appreciation for endorsements from the Colorado Geological Survey, the Colorado Mining Association, the Colorado Department of Natural Resources and the Colorado Division of Mine Safety and Reclamation. -
2012 Runners Manual July 13-15, 2012
2012 Runners Manual July 13-15, 2012 Silverton, Telluride, Ouray, Lake City Clockwise Direction i Executive Rules Summary We hope you read this manual in its entirety. But here is a summary of what we think are the important points! It is our goal to provide you a safe, well-organized and spectacular running experience. In order to do this we ask that you help us by abiding by these guidelines. 1. No Whining. 2. The Run Director has final authority on any question that may arise during the HRH. 3. You must leave each aid station by the posted cut-off time. If you return, it will be assumed you have abandoned your run attempt. 4. No littering. 5. No stashing of supplies along the course and no accepting aid except within 400 yards of a designated aid station. 6. You have agreed to be pulled for medical and safety reasons if it is determined that such action is in your best interest. 7. Aid station captains have the authority to act on behalf of the HRH run management. 8. Enjoy yourself!!!!! 9. Pacers may meet their runners at CREW ACCESS AID STATIONS ONLY. 10. You must kiss the HARDROCK upon your successful completion of the run. ii Hardrock Hundred Runners Manual 2012 (V1.4 12MAY12) Charlie Thorn 2012 Table of Contents 1. Introduction 6. Search and Rescue 1.1 Run Organization 6.1 Colorado Search and Rescue 2. Runner Information 7. Run Week Guidelines 2.1 Other Reading 7.1 Detailed Timeline 2.2 The Course 2.3 The Weather Wednesday, July 4, 2012 2.4 Training Friday-Sunday July 6-8, 2012 2.5 Route Finding Wednesday, July 11, 2012 2.6 Fauna and Flora Thursday, July 12, 2012 2.7 Dropping Out Friday, July 13, 2012 2.8 Cutoff Times Saturday, July 14, 2012 2.8.1 Sacking Out Sunday, July 15, 2012 3. -
Historic Mining Resources of San Juan County, Colorado______Name of Multiple Property Listing State ______
Historic Mining Resources of San Juan County, Colorado_________________ Name of Multiple Property Listing State _____________________________________________________________________________ Table of Contents for Written Narrative Provide the following information on continuation sheets. Cite the letter and title before each section of the narrative. Assign page numbers according to the instructions for continuation sheet in How to Complete the Multiple Property Documentation Form (National Register Bulletin 16B). Fill in page numbers for each section in the space below. PAGE NUMBERS SUBJECT TO CHANGE E 1 Statement of Historic Contexts………………………………………………………...….1 Introduction………………………………………………………………………….….…..1 The Physical Environment of San Juan County………………………………….….….…....2 San Juan County’s Mining Districts………………..………………………...………...…….5 Las Animas Mining District…………………………………………………..……...5 Eureka Mining District…………………………………………….….…………..…6 Cement Creek Sub-District……………………………………...………….………6 Mineral Creek Mining District………………………………………...…………….7 Ice Lake Mining District……………………………………………………...……..7 Mineral Point Mining District…………………………….………………...……….7 Poughkeepsie Mining District………………………………………………...…….7 Bear Creek Mining District…………………………………………….………...…8 E 1 The History of Mining in San Juan County………………………………………...….…8 The Gold Rush, 1860 – 1861……………………………………………..……….8 Return to the San Juans, 1870-1874 ……………………………………………12 Settlement and Establishment of Industry, 1875-1881 ………………………….29 The Early 1880s Boom, 1882-1885 ..…………………………………………...53 -
The Rockies of Colorado
THE ROCKIES OF COLORADO THE ROCKIES OF COLORADO BY EVELIO ECHEVARRfA C. (Three illustrations: nos. 9- II) OLORADO has always been proud of its mountains and rightly so; it is often referred to in the Union as 'the mountain state', about 6o per cent of its area is mountainous, and contains fifty-four peaks over 14,ooo ft. and some three hundred over 13,000 ft. Further, its mountaineering history has some unique aspects. And yet, Colorado's mountains have been seldom mentioned in mountaineering journals; if in modern times they may have deserved a passing mention it has been because of a new route on Long's Peak. But on the whole, the Rockies of Colorado are almost unrecorded in the mountaineering world abroad. In this paper, an effort has been made to outline briefly the characteris tics of this area, and to review its mountaineering past; a few personal experiences are also added. The mountains of Colorado belong almost completely to the Rocky Mountain range of North America; a few outliers are sometimes mentioned as independent lesser chains, but in features and heights they are unimportant. The Rockies of Colorado are grouped into a number of ranges (see sketch-map), some of which are actually prolongations of others. Some what loosely and with some injustice to precise geography, they can be grouped into ten important sections. The state of Colorado is a perfect rectangle in shape; the Rockies enter into its western third from Wyoming, to the north, and split, then, into two parallel chains which unite in the centre of the state.