 | | Report (issue) | | Quadrangle, Colorado GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation with the Colorado State Geological...Geological Survey Board and the Colorado Metal Mining Fund PAPER 289 Geology and Ore Deposits of...of the Garfield Quadrangle, Colorado By McCLELLAND G. DINGS and CHARLES S. ROBINSON GEOLOGICAL SURVEY...in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mitting Fund. A..._ Fremont dolomite _________________________ _ Chaffee formation __________________________ _ Leadville |  | | Report (issue) | | ........•.. :................................ Colorado River........... . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . Austin chalk ...............................·.................................................... Section on Colorado River ........................... :. . . . . ... . . . . . . . . . . . . . . . . . Section on Colorado River. . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . 3G Section on Colorado River. . . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | east-westtrending folds and beddingplanefaults acrossthe district; differentialyielding resultedin overturningof...actinoliteis alteredto biotitealongfractures. Tracesof pyrite accompany actinolitein the outermost zones of beddingstreaksand...beddingstreaksand orbicules.Chalcopyrite accompanies pyrite as the fracture fillingin theenvelope zones.Nearthestock...carbonationandsulfidation, yielding pyrrhotite, pyrite,andchalcopyrite in addition to calcite 1326 SKARN...the ore fluid. Introduction Tin; Bingham mining district, locatedon the east slopeof the Oquirrh Mountains40 |  | | Journal (article/letter/editorial) | | Menominee iron ranges, which were the impetus for mining and the resultant population growth in the area...of the story, as they say, is history. Marquette County alone would eventually have 247 iron mines (Mulligan...two large, open-pit taconite mines (Empire and Tilden) managed by Cleveland Cliffs, Inc. Taconite is...labeling, however, was not the rule during much of the mining era here. Most specimens recovered in the early...early years were identified only as to district or range (e.g., “Iron River” or “Marquette Range”); many |  | | Report (volume) | | Mich., by George C. Simmons ___________________ Tilden Lake sill ______________________________ National...structures in the San Juan volcanic field, southwestern Colorado, by T. A. Steven, P. W. Lipman, and J. C. Olson...Pony Trail Group in the Cortez Mountains, Eureka County, Nev., by J. Fred Smith, Jr ________________________...Alboroto Rhyolite (of Middle and late Southwestern Colorado. Potosi Volcanic Group). Tertiary. Late Triassic...Mountain Tuff _ late Oligocene _-_- Southwestern Colorado. Badwater Greenstone ___ middle Precambrian |  | | 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) | | QUADRANGLE AND ADJACENT BROWN1 S LAKE AREA, BEAVERHEAD COUNTY, MONTANA A preliminary report by W^ B* Myers .....~ "«"~» . ~ .........«~..~. 30 Tuscarora and Tilden mines .... ... . . ' -. ^Mauldin niine >~'-"~"...the NWi of the ^£S:^^A^^^ quadrangle, Beaverhead County; ^^^^^^f^r^^Maatwaa... ": . .-. . In pocket tc...QUADRANGLE AND ADJACENT BROWN1 S LAKE AREA, BEAVERHEAD COUNTY, -,' *; MONTANA A preliminary report by W, B....preliminary report and geologic map of the Argenta mining district, submitted to the Bureau of Reclamation in |  | | 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 .......Creek County ............................ . 103 Ores from the Argentine to the Tenmile district .. : .................. . 104 Ores of the Tenmile 'district ................................................ |  | | Book | | T. J. Bornhorst, P. Brandes, R. Clark (Cliffs Mining Services Co.), B. C. Cornilsen, R. V. Dietrich...helpful suggestions throughout the project; to Ashton Mining of Canada, Inc. and Crystal Exploration, Inc.,...APPENDIX I: MICHIGAN MUSEUMS AND EXHIBITS FEATURING MINING, MINERALS, ROCKS, AND FOSSILS .......................243 APPENDIX II: MINERAL SPECIES LISTED BY COUNTY ...............................248 ABOUT THE AUTHORS...Oronto Group a.. 3: co w C: _J 0 0 Marquette Iron District, Baraga and Marquette Counties diabase dikes |  | | Journal (article/letter/editorial) | | km 2. The tonalitic orthogneiss, including the Tilden Tonalite, forms a discontinuous zone of intrusions...Warren Trondhjemite at six locations, and of the Tilden Tonalite at one location, indicates that the former...and Paleo-Mesoproterozoic supracrustal rocks. The Tilden Tonalite, from which sample 91-17 was collected...plutonic rocks; the Neoarchean Warren Trondhjemite and Tilden Tonalite identified in this study were emplaced...(Krogh et al., 1987; Green et al., 1988). In Fig. 1, Tilden Tonalite represents the easternmost exposure of |  | | Report (volume) | | 1-4. Minneapolis, Minn. American Institute of Mining Engineers, Transactions, vol. 15, p. 536 to end...2d series, vol. 1, parts 1, 2. California State Mining Bureau. Seventh and Eighth Annual Reports of the...Cincinnati, Ohio. Colorado State School of Mines, Field work and Analyses. Golden, Colorado, 1886. Biennial...Biennial Report, 1886; Annual Report, 1887. Colorado Scientific Society, Proceedings, vol. 2, parts 2, 3; vol...1887-'89. Raleigh, North Carolina. Engineering and Mining Journal, vols. 43-48. New York. Essex Institute |  | | Journal (article/letter/editorial) | | occurrences. These localities have been listed by county; and, strictly for convenience, the list has been...None theless, with the aid of a good state or county map, plus local inquiries, the list could be helpful...that do not permit collecting for various reasons, mining operations that have recently shut down but whose...that published by the Colorado Chapter (see Min. Record 10:323-328). Like the Colorado group, our chapter...micromounting PENINSULA Wayne County International Salt C o . mine—Detroit Alpena County National G y p s u m |  | | Journal (article/letter/editorial) | | mostly in small amounts. A bed near Pyriton, Clay County, Ala., was worked for copper. One was mined near...near Stone Hill in the southern part of Cleburne County at what was called Wood's copper mine and also... Much of the mining was done in the early seventies. There was a large amount of pyrite present that...Martinez Lake, Yuma Co., Ariz., is a resort on the Colorado River, 37 miles north of Yuma. From the locality...chalcedony. "In the Martinez Lake District, which is part of the Colorado River and 37 miles north of Yuma |  | | Journal (article/letter/editorial) | | Pb, and 0.6 percent Cu. Primary ore minerals are pyrite, sphalerite, galena, chalcopyrite, pyrrhotite,...minerals is minor. A lens of banded sphalerite-pyrite ore precipitated from a late-stage ore solution...has a more diverse mineral assemblage(Table 1); pyrite forms the basesof graded bedsin somespecimens....and pyrite Tuffaceous mudstone: dark gray;sericite,chlorite,and quartz; minor plagioclase, pyrite, and...sandstone: quartz,sericite,chlorite,plagioclase, and pyrite; minor lapilli, microcline,and biotite Argillaceous |  | | Journal (article/letter/editorial) | | turquois veinlets up to an inch wide with associated pyrite are present in quartzite and granite porphyry....believed to have beeir derived from the fossiliferous Tilden Limestone. The positions of vivianite and turquois...the highest power of the microscope.Locally small pyrite crystals are presentin the same vein with the turquois... BINGHAM PHOSPHATES 1309 Onrcru Copper and iron from pyrite, chalcopyrite,and bornite and aiuminum from feldspars...reports that the Tilden formation of Upper Pennsylvanian age occurring in the district has a 12-foot f |  | | Report (volume) | | market leaves but one buyer for the radium ores of Colorado and Utah, which is decidedly to the disadvantage...now at war happen to be the six next largest coal-mining countries, producing together over half the world's...world's coal. Interference with both the mining and the commerce of these nations must necessarily increase...investigations in mining regions or on newly discovered deposits or recently opened mining districts. Examples...bulletin of the Geological Survey, entitled "The Mining Districts of the Western United States" (Bulletin |  | | Report (volume) | | Celestite_____________-_-_____________-_____-__-__--__-_----Pyrite and marcasite_________________________-_--__---__-_-_-_Hematite...Wellington Formation, Hutchinson Naval Air Station, Reno County, Kansas. In pocket FIGURE 1. 2. 3. 4. 5. 6-17....remains of the blue-green algae Phormidium antiquum Tilden are found in many of the halite layers and also...magnesite, hematite, eelestite, marcasite, and pyrite occur as single crystals or as groups of crystals...minerals such as anhydrite, quartz, chalcedony, pyrite, and halite. The evaporites of the Hutehinson Salt |  | | 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..._____________________ _ Copper deposits in Jefferson County __ _ F. M.D. property _____________ _ Malachite...Cherry Creek and Douglas County placers _________________________ _ Mining districts in the mineral belt |  | | Book (edition) | | who have been engaged in the study of our great mining regions, especially in the West, have laid the...now in the active practice of the profession of mining engi neering. J. F. K. DECEMBER, 1899. NO TEXT...125-129; Marquette district, 129-136; Menominee dis trict, 136-139; Penokee-Gogebic district, 139-143; Vermilion...hematites, 159.. 114-159 CHAPTER HI.— MAGNETITE AND PYRITE. Example 12, Magnetite beds, 160; Adirondack region...Western North Carolina and Virginia, 169, 170; Colorado, 170, 171; California, 171; Example 13, titaniferous |  | | Book (volume) | | beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds...Guide for Rock Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles...crystals of Metastrengite, showy black and gold Pyrite, and Reddingite; at Beecher Lode 4.9 mi. SEAmblygonite |  | | Journal (article/letter/editorial) | | University of California, Los Angeles, CA 90095, USA Center for the Study of Evolution and the Origin... CA 90095, USA c Penn State Astrobiology Research Center, University Park, PA 16802, USA d Department...colleague at the university, biologist Josephine Tilden, among the foremost phycologists of the day and...regarded textbook The Algae and Their Life Relations (Tilden, 1935). Though Gruner’s filaments were almost assuredly...assuredly the first “Precambrian fossils” Tilden had ever examined, she confirmed Gruner’s biological interpretation |  | | Journal (article/letter/editorial) | | 282; J. M. Clements, "The Vermilion Iron-bearing District of Minnesota," U.S. Geol. Surv., Mon. 45, 1903...the fossils, some magnetite, and minute specks of pyrite. This is exactly the composition of the chert of...Professor Josephine Tilden, algologist at the University of Minnesota. Professor Tilden classes them as blue-green...of these organisms which, according to Professor Tilden, also belong to the blue-green algae of the type |  | | Journal (issue) | | New techniques for long-term storage of oxidising pyrite a solution Cambridge 1 October 1998. GCG Seminar...techniques; Andrew Newman (University of Newcastle) on pyrite oxidation in museum collections; and Steve Laurie...Speakers include David Oldroyd: J E Marr and the Lake District Matthew Parkes: Site protection in Ireland Philip...technologies for long-term storage of oxidising pyrite a solution? Chris Collins, Geological Conservation...workshop looking at the problems associated with pyrite decay and possible cost-effective solutions. To |  | | Report (issue) | | Sonora, Mexico Greg E. McKelvey, Phelps Dodge Mining Company Brenda B. Houser, Past-President, Arizona...explore the mining history and mineral deposits of one of the country's most important mining regions; further...National Scenic Area, California. Summitville, Colorado, has been the focus of an intense effort to understand...crops. The distribution and movement of metals from mining districts of Coeur D'Alene, Idaho, and Rio Tinto...impact of mining in the southeastern San Juan Mountains and adjacent San Luis Valley, Colorado Historic |  | | Journal (article/letter/editorial) | | Except in the case of four of the five analyses by Tilden, relative to which sufficient data are not given...DoDoDoDoDoDoDoDoDoDoDoDoDoDoDoDo DODoDo Gautier Chamberlin Tilden Chamberlin .53 .60 .65 -76 2.8o9.27 2.94 I.6o2.................... igneous ................... Colorado......... ................ Ontario.......... Georgia...DoDoDoDoDoDoDoDo DoDo Do Chamberlin Travers Tilden Gautier Chamberlin Tilden .87 .84 1.1.233.6429-73 2.25 100.......... .................. .................. Colorado.............03 Minnesota............oi Wisconsin |
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