 | | Journal (article/letter/editorial) | | inch on edge, from the Henderson mine, Clear Creek County. Figure 2 (right). Green fluorite encrusted with...Mountain Wilderness area near Columbine Lake, La Plata County; largest crystal measures 1.25 inches on edge;... FLUORITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs by John R...locations in Mexico; in Elmwood, Smith County, Tennessee, and in Hardin County, Illinois, in the United States;...eastern Russia. It also occurs in many localities in Colorado, where it is found in colors ranging from pale |  | | Journal (article/letter/editorial) | | pohwatp@si.edu ENARGITE Longfellow Mine, Red Mountain District, San Juan County, Colorado Are all things beautiful...north orebody of the Longfellow mine, Red Mountain district, San Juan County, Colorado. Specimen is 2.5 cm...familiar example is pyrite and marcasite. Both are iron sulfide in composition, but pyrite crystals are isometric...chalcopyrite, tetrahedrite, sphalerite, galena, pyrite, calcite, and quartz, to name but a few. It is...Figure 2. Enargite trilling from Butte, Silver Bow County, Montana. Twin is 5 mm across and is on the specimen |  | | Journal (article/letter/editorial) | | of COLORADO ED RAINES Geology Museum Colorado School of Mines 1310 Maple Street Golden, Colorado 80401...Figure 1. Camp Bird mine, level 2, Sneffels district, Ouray County. Raines-Pettem collection, photographer...photographer unknown. B etween 1868 and 1922, Colorado produced almost 260 million pounds of copper. Nearly 100...from the Leadville district, with another 50 million pounds mined in San Juan County (Henderson 1926).... During the twentieth century, the Gilman district surpassed Leadville in total copper production with |  | | Report (issue) | | THE COPPER DEPOSITS OF THE CLIFTON-MORENCI DISTRICT, ARIZONA BY w-ALDEMAR LINDGREN WASHINGTON GOVERNMENT... . . . . . . . . . . . . . . . . . . . . . . . Mining _. _................... _.... _... _..... __ ..... . . . . . . . . . . . . . . . . . . . . 61 Longfellow limestones . . . . . . . . . . . . . . . . ...._... _............... _....................... Pyrite ••..............................................._____ ..... __ . _.. __ .. Chalcocitization of the pyrite _. ___ . _____ . ____ . _. __ _________ ..•• _ |  | | 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) | | the ore. Sulfides likely to be present include pyrite, galena, sphalerite, and arsenopyrite (Berger,...deposits used in Table 1 may represent a major mine, district name, or local town name or other prominent feature...in gold-quartz mines in the Meguma Group, that pyrite is the most abundant sulfide in mines California...statements found in the literature for an area or district do not differentiate between mineral abundance...reported. Analyses of this subset tracked data on pyrite, arsenopyrite, galena, chalcopyrite, sphalerite |  | | Report (volume) | | 1364 )repared in cooperation with the Colorado tate Mining Industrial Development Board (rsenic as...___________ ---------------------------------Longfellow and St. Paul mine sites (locs. 4 and 5) ______________... 4. 5. 6. 7. 8. 9. 10. 11. Index map of Colorado showing area of this report Map showing geochemical...compound volcanic pipe and sample localities at the Longfellow and St. Paul mine sites __ _ Sketch map of sample...--7. Spectrographic analyses of rocks at the Longfellow and St. Paul mine sites ___ ---------------- |  | | Journal (article/letter/editorial) | | MINERALS PYRITE By ROBERT D. ROOTS 3147 W. 39th Avenue, Denver 11, Colorado Everyone likes pyrite from...can to Colorado. I can remember as a boy at Idaho Springs, Colorado, breaking up cubes of pyrite and galena...N o doubt many good specimens went this way but pyrite was common then and not many people cared about...nothing in it. Crystallized gold has been found in pyrite crystals in mines near Idaho Springs. Leadville...small dump that a friend had permission to take pyrite from disappeared over winter. I have seen many |  | | Journal (article/letter/editorial) | | MUNTYAN 536 Third Avenue P.O. Box 495 Ouray, Colorado 81427 All photographs by John R. Muntyan of specimens...Hardin County, Illinois, among other localities. Barite also occurs in many localities in Colorado, where...wellcrystallized crystal groups. Colors reported for Colorado barite range from sky-blue to snowwhite to golden...considerable variety for a single mineral species. In Colorado, barite is found in a variety of environments...significant amounts in many of the mining districts of the Colorado mineral belt as a gangue mineral, |  | | Report (issue) | | The Triangle of Colorado Mountains of Minerals Contributors David W. Bunk, Robert B. Cook, Don Earnest... Contents PAGE4 PAGE 10 4 The San Juan Triangle of Colorado Ho for the San Juans! by Duane A. Smith, Mark...and Karen A. Vendl L ocated in southwestern Colorado and covering over 31,000 square kilometers, the...zinc, tungsten, and copper. In 1896 world-renowned mining engineer Thomas ''T.A." Rickard called the San...San Juans one of Colorado's four great mining regions along with Leadville, Cripple Creek, and Central City |  | | Report (issue) | | Tombstone district, Cochise County; Gila County, at Lost Gulch Mine, near Globe; Mohave County, in Mineral...Pima County, in Mammouth Mine, Schulty; Yavapai County, in ores of Bradshaw Mountains; Yuma County, in...in Castle Dome district; common in silver veins. ANTIMONY ORES. See Jamesonite and Stibnite. ARGENTITE...ARGENTITE (silver glance). Mohave County, in pre-Cambrian granite gneiss in Chloride, Mineral Park, and Stockton...Stockton Hill districts; Pinal County, at Silver King; Santa Cruz County, at Montezuma and Empress of India |  | | Journal (issue) | | .. 15 W. E. Wilson The Piedmont mine, Yavapai County, Arizona ......................................... 29 B. L. Muntyan The San Manuel mine, Pinal County, Arizona ........................................Alexander The Morenci and Metcalf mines, . Gila County, Arizona ........................................Presmyk & M. Hay Treasures of the Magma mine, Pinal County, Arizona ........................................147 W. E. Wilson & Mark Hay The Ford mine, Pinal County, Arizona ..................................... |  | | Journal (issue) | | Marvin Hanner Additions to the Ore Mineralogy of Colorado.................................................by Donald Grybeck Crystallized Minerals of the Colorado Mineral Belt....................................Lapidary Journal, 27, No. 7, 1040. ITALIAN MOUNTAIN, COLORADO by M. M. Groben Italian M ountain (elevation 13...betw een A spen and Crested Butte in w estern Colorado. Although probably visited by early miners, it...writing Alpine Exploration, Box 277, Crested Butte, Colorado 81224, for ap plication. A fee of S6.00 is requested |  | | 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..._ Quartz diorite and associated hornblendite_ Boulder Creek granite _________________ _ Pikes Peak granite..._____________________ _ Copper deposits in Jefferson County __ _ F. M.D. property _____________ _ Malachite |  | | Journal (article/letter/editorial) | | is stained green by green malachite. COLORADO — "At the Longfellow mine in Red Mountain Pass between Silverton...Silverton and Ouray in southwest Colorado there recently was found a huge vug lined with tetrahedrite...1963, sent in by Patrick Fancher, Box 63, Ouray, Colorado. 476 x l ine—crystall ine CONNECTICUT — "To...the Gulf of Mexico. Key West is the county seat of Monroe County. The name, Key West, is said to be a...these inclusions for me. They were found in Putnam County, Georgia, about 10 miles east of Eatonton. Some |  | | Journal (article/letter/editorial) | | te from a newly discovered locality in Yavapai County, Ariz., on the Verde River near Camp Verde, Ariz...collected in Yavapai County, East of Prescott, Arizona. "They were taken from a boulder of solid calcite...near the outside edge of the ROCKS AND MINERALS boulder shows a much deeper pink than at the center." ARKANSAS—Azurite...and reads as follows: "Stockton, Oct. 19—Powhatan Mining Co. recently shipped a carload of antigorite, a...type of asbestos, from a deposit near Jamestown, Tuolumne County, to its plant in Baltimore, Md. "Asbestos |  | | Report (volume) | | related to Elkhorn Mountains Volcanics 7 Cretaceous boulder batholith and related intrusive rocks Eocene quartz...Elkhorn Wilderness Study Area FIGURES 1. Map of mining districts in and near the Elkhorn Wilderness Study... Elkhorn, and Park mining districts, and all of the Tizer-Wilson mining district, none of which were...area also includes part of the Warm Springs mining district, within which only the White Pine mine, outside...EXPlANATION - - - Approximate boundary of mining district Figure 1. Mining districts in and near the Elkhorn |  | | Journal (article/letter/editorial) | | One a small crystal from the Longfellow Mine near Jimtown (Jamestown), and from Central City a larger...sagged. Then he bent down and picked up a piece of pyrite. His shoulders straightened and he was no longer...specimen is now. I have had a lot of fun hunting pyrite and I think my next trip will be up to that mine...I can find another crystal with recessed cubes. Pyrite in some form or another is found everywhere and...surprised. I was going to write a little about pyrite pseudomorphs but as most of that is out of the |  | | Report (issue) | | Trip 18 : Safford District (Sanchez) and Morenci - Metcalf October, 1994 Bootprints Along the Cordillera...of the Arizona Geological society, society for Mining, Metallurgy and Exploration Inc., and the U. s...We also want to thank collectively, all of the mining companies and staff who graciously allowed us to...PAGE INTENTIONALLY BLANK MORENCI DISTRICT AND SAFFORD DISTRICT(Sanchez) FIELD TRIP October 8-9, 1994...post-meeting field trip to the Morenci and Safford mining districts. The trip will examine leached capping |  | | Journal (article/letter/editorial) | | andReplacement Deposits,Northwestern SanJuanMountains,Colorado J. THOMASNASH Abstract Base and preciousmetal...Introduction depositsin pipesin the Red Mountain district were minedfor oresvaluedin excess of $10million(Fisher...Silverton, much greater (Mayor and Fisher, 1972). The Colorado (Fig. 1). The greatestproductionhas Idarado and...detailedstudiesunder1448 FLUID INCLUSION way by the Idarado Mining Companyand Frederick S. Fisher, U.S. GeologicalSurvey...mine, located in Ouray and San Miguel Counties,Colorado,producesabout 1,500 tonsof oreper dayfrommorethan15 |  | | Journal (issue) | | 602-297-6709 Articles The Iron Cap mine, Graham County, A rizona.................................81 by...Ouray County, Colorado ............... 89 by B. & J. Muntyan Anatase on quartz from Ouray County, Colorado...in Arizona (the Iron Cap mine) and in Ouray County, Colorado, are described in three articles, and a great...which about 280,000 were classed as “ pewter-grade" pyrite and the like (used as bases for pewter figurines...huge i show organized by Herb Duke at the Pima County Fairgrounds. Following the advertising section |  | | Journal (article/letter/editorial) | | plenty! This article discusses the history of copper mining in the state, the nature of the deposits, and a...mineral-producing localities. History of Copper Mining in Arizona There is some dispute as to whether...Blake (1898) documented an extensive preColumbian mining operation on Turquoise Mountain, located about...quartz veins that contain gem-quality turquoise. The mining was accomplished with very crude methods; the rock...ancient mines have now disappeared, removed by modern mining at the Mineral Park open-pit copper mine. The first |  | | Journal (article/letter/editorial) | | MINERAL COLLECTING BY CAMPER IN COLORADO By LAWRENCE AND HARRIETTE SCHOPPEE 9 Greenbrier St., Springfield...investigating such a claim? We took our Camper to Colorado and now that state rivals Canada in our list of...campgrounds are available, and many new sites in Colorado are being opened every year. Our sleeping bags...described in Professor Richard M. Pearl's book, "Colorado Gem Trails and Mineral Guide." As in any other...before starting to collect in Colorado. Traveling from Massachusetts to Colorado is a trip in itself but don't |  | Kimball, B.E., Mathur, R., Dohnalkova, A.C., Wall, A.J., Runkel, R.L., Brantley, S.L. (2009) Copper isotope fractionation in acid mine drainage. Geochimica et Cosmochimica Acta, 73 (5) 1247-1263 doi:10.1016/j.gca.2008.11.035 | Journal (article/letter/editorial) | | Park, PA 16801, USA b Department of Geology, Juniata College, Huntingdon, PA 16652, USA c Pacific Northwest...Richland, WA 99354, USA d US Geological Survey, Denver Federal Center, Denver, CO 80225, USA Received 28 March...acid mine drainage in a mineralized watershed (Colorado, USA). The d65Cu values (based on 65Cu/63Cu) of enargite...Acidithiobacillus ferrooxidans has been grown on pyrite (e.g., Yu et al., 2001; Sharma et al., 2003; Garcia...Mineral Creek (MC), located in southwestern Colorado, USA. Others have conducted intensive investigation |  | | Report (issue) | | Silverton 7.5-minute quadrangle, San Juan County Colorado by Robert G. Luedke1 and Wilbur S. Burbank2...the western San Juan Mountains of southwestern Colorado .................................. 2. Aeromagnetic...the western San Juan Mountains of southwestern Colorado (fig. 1), includes almost 59 square miles (153...the quadrangle, became the county seat of San Juan County when the county was formed in 1876 (Henderson...survived the ups and downs of the mining industry, and now, even with mining activity at low ebb, it is still |
|
