 | | Report (volume) | | Mafic-Ultramafic Layered Intrusion at Iron Mountain Fremont County Colorado GEOLOGICAL SURVEY BULLETIN 1251-A... Mafic-Ultramafic Layered Intrusion at Iron Mountain Fremont County Colorado By DANIEL R. SHAWE and RAYMOND L...funnel-shaped intrusive complex associated with younger alkalic rocks of the McClure Mountain Complex UNITED STATES...mafic-ultramafic layered intrusion at Iron Mountain, Fremont County, Colo____- ________ In pocket 1. Geologic...McClure Mountain Complex showing location and geologic setting of the mafic-ultramafic complex at Iron |  | | Journal (article/letter/editorial) | | ites fromthe Wet MountainsArea, Fremont and Custer Counties,Colorado TnEOr)ORE J. ARMBRUSTMACHER Abstract...Carbonatites associated with alkalic rocks of the McClure Mountain and Gem Park Complexes, andthecomplex at DemocratCreek...(1.45 b.y.) (Taylor et al., 1975a,b) (Fig. Park Complex(Parker and Sharp, 1970) outlined 1). variousdetailsof...McClure Mountain dikeswere mappedwithin the Iron Mountainmafic- Complex,the Gem Park Complex,and the...the complex ultramaficportion of the McClure Mountain Com- at Democrat Creek. The mafic-ultramaficparts |  | | Report (issue) | | deposits in the Wet Mountains area, Fremont and Custer Counties, Colorado By T. J. Armbrustmacher Open-File...deposits in the Wet Mountains area, Fremont and Custer Counties, Colorado 1 By T. J. Armbrustmacher Introduction...of the Wet Mountains of south-central Colorado in southern Fremont and Custer Counties. The thorium deposits...Arkansas River on the north, the Custer-Huerfano County line on the south, the Use fault on the east, and...Conference held December 8-10, 1975 at Golden, Colorado. Figure 1. Location and geologic map of the |  | | Report (issue) | | Washington Zinc ore, Friedensville, Pa. Banded iron-formation. Palmer, Mich. 6. Ribbon asbestos ore...Peninsula, Mich. 10. Porphyry molybdenum ore, Colorado 11. Zinc ore, Edwards, N.Y. 12. Manganese nodules...Elements in the Wet Mountains Area, Fremont and Ouster Counties, Colorado By THEODORE J. ARMBRUSTMACHER GEOLOGY...elements in the Wet Mountains area, Fremont and Custer Counties, Colorado. (Geology and resources of thorium...16:1049-F 1. Thorium ores—Colorado—Wet Mountains Region. 2. Earths, Rare—Colorado—Wet Mountains Region. 3 |  | | Journal (article/letter/editorial) | | ALKALIC ROCKS OF THE ARKANSAS RIVER AREA, FREMONT COUNTY, COLORADO.4. THE PINON PEAK BRECCIA PIPES1 E. Wru...Assrnecr The Pinon Peakbrecciapipesin Fremontcounty, colorado,are satelriticto the tion are recorded, thus...bodies of the alkalic province of Fremont and custer counties, colorado. The pinon peak breccia pipes, herein...are satellitic to the Mcclure Mountainrron Mountain complex, just as the Democrat creek comprex has marginal...s (3.3 airline miles) from its consanguineous complex, whereasin Democrat Gulch the brecciasare adjacent |  | | Report (issue) | | pipes in the Bokan Mountain district of Alaska, carbonatite dikes, and apatite-bearing iron deposits in the................. . Veins and Pipes in the Bokan Mountain District, Alaska ...................................... . Powderhorn District, Colorado ................. . Mountain Pass, California .................Area, Colorado ................ . Bearpaw Mountains, Montana ................. . Ravalli County, Montan81-...Montan81- Lemhi County, Idaho .. Magnet Cove and Potash Sulfur Springs, Ar· kansas ..................... |  | | Journal (article/letter/editorial) | | this type are principally of quartz, feldspar, and iron oxides and are known from at least 13 widely scatteredareas:...Idaho; (3) Hall Mountain, Idaho; (4) Wet Mountains, Colorado; (5) Powderhorn, Colorado; (6) Laughlin Peak...Cottonwood area, Arizona; (11) Monroe Canyon,Utah; (12) Mountain Pass, California; and (13) Wausau, Wisconsin....are all extremely rare except in the veins at Mountain Pass, which contain substantialamounts of bastnaesite...biotite, chlorite, barite, apatite, and fluorite. Iron oxide minerals, especially limonite and hematite |  | | Report (volume) | | dyeing. Only the ruby, sapphire, spinel, emerald, rutile, and quartz of gem quality have been synthesized...therefore a wide range of colors. Impurities, such as iron, chromium, and copper, also tint the minerals. Care...spinel, emerald, sapphire, star sapphire, star ruby, rutile, and quartz are gem stones that have been successfully...generally is more easily synthesized than one of complex composition. Although the diamond has the simplest...Del Norte County; Trinity River, Trinity County; Spanish Creek and Gopher Hill, Plumas County; Placerville |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . . 1 County Listings. . . . . . . . . . . . . . . . . . . .... . . . . . . . 4 Mineral Localities Listed by County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 7 Beaver County . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . 7 Box Elder County . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 10 Cache County . . . . . . . . . . . . . . . . . . . . . . . |  | | Report (issue) | | Carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL...CARBONATITES OF THE GEM PARK COMPLEX, CUSTER AND FREMONT COUNTIES, COLORADO S a n g re d a C r i s... GEM MOUNTAIN Sawatch Range ark -Cbtrfplex ving pyroxenite and gabbro of the Gem Park Complex. -«...Carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado By RAYMOND L. PARKER and WILLIAM...GEOLOGICAL SURVEY PROFESSIONAL PAPER 649 The Gem Park Complex its geology and mineralogy, and its niobium distribution |  | | Journal (article/letter/editorial) | | Corporation of America Mine No. 4, St. Lawrence County, New York T he technological development of mankind...ornamentation and trade such as those of gold and silver. Iron, however, is another matter entirely. The development...sources of the metal are far greater. Local sources of iron were critical to the early European settlers of...significant number of these early attempts to produce iron were from magnetite occurrences, some of which were...metals that in later years eclipsed the primitive iron furnaces, the famous zinc mines of Franklin “Furnace |  | | Report (volume) | | ............................................. Colorado.................................................deposits of some others, such as clay, coal, and iron ore, are mentioned only in general terms. One material...especially from those of Arkansas, California, Colorado, New Mexico, Oregon, South Dakota, Tennessee,...minerals and rocks, their occurrence and uses: Colorado State Geol. Survey Bull. 6, 1913. 8 USEFUL...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |  | | Report (issue) | | 150-163, 1906. (2) *315d Titaniferous iron ore of Iron Mountain, Wyo. , by S. H. Ball, in Contributions...of the rare-earth metals at Baringer Hill, Llano County, Tex., by F. H. Hess, in C~ntr ibutions to Economic...1907, pp. 286-294, 1908. (4) *430d The Virginia rutile deposits, by T. L. Watson and Stephen Taber, in...Geology, 1912, pp. 329-3~7, 1914. (7) *580o The rutile deposits of the eastern United States, by T. L...magnetite-ilmenite deposits near Lake Sanford, Essex County, N. Y. , by .r. R. Balsley, Jr., in Strategic Minerals |  | | 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 (issue) | | Reconnaissance of the ore deposits in northern Yuma County, Ariz.: Bull. 451, 130 pp., 1911. 30c. -. The ore...Minerals from the neighborhood of Pikes Peak [Colorado]: Bull. 20, pp. 40-74, 1885. Exhausted. CROSS...CROSS, WHITMAN, and HOLE, A. D., Engineer Mountain folio (No. 171), Geol. Atlas U. S., p. 13, 1910. 5c. CROSS...geology and mining district'of Leadville, Lake County, Colo.: Second Ann. Rept, pp, 201-290, 1882. $2...1914. Gold, silver, copper, lead, and zinc in Colorado in 1913 (mines report) : Mineral Resources U. |  | | Report (volume) | | deposits of some others, such as clay, coal, and iron ore, are mentioned only in general terms. One material...A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson |  | | Journal (article/letter/editorial) | | JanuaryFebruary: Ferro-axinite on calcite, Dodo mine, Puiva Mountain, KhantyMansi Avt. Okrug, Tyumen’ Oblast’, Russia...quartz, Manhan River mine, Easthampton, Hampshire County, Massachusetts. Marvin Rausch specimen, Jeff Scovil...branch of the Calumet and Hecla mine, Houghton County, Michigan. A. E. Seaman Mineral Museum (Michigan...JulyIAugust: Vanadinite and wulfenite, Old Yuma mine, Pima County, Arizona. Les Presmyk specimen, Jeff Scovil photo...claim, Lake George intrusive center, Teller County, Colorado. Dave Bunk specimen, Jeff Scovil photo. November/December: |  | | Book (edition) | | Carbonatites are now the major sources of RE elements (Mountain Pass, California) and of Nb (Oka, Quebec and Araxa...detailed geological survey of the Alné Island complex and announced his results in a series of papers...most of the field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913. Although his...never accepted the idea of an igneous origin for the Iron Hill carbonatite. In 1924 Bowen, who had visited...fairly pure calcite (Garson and Smith, 1958). The complex was first studied by F. Dixey, and it was he who |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Journal (article/letter/editorial) | | ldbe detectedin amountsaslow as300 ppm. Ferrous iron waspresentin mostdolomiticcarbonatitesamplesand...to sample includingsilicates,phosphates,sulfates,iron oxides, preparation and measurement(Wambeke, 1960)...onlyduringthelast35 years(Deans,1966;Kapustin, Mountain Pass district, California; Oka, Quebec, 1980)...be dis- Canada;Iron Hill, Powderhorn district, Colorado;and covered. GemPark,Colorado(Fig. 1). Althoughthe...Similarly, the HOH-bending vibration district,Colorado;O -- Oka Carbonatite,Quebec,Canada. mode,coupledwith |  | | Journal (issue) | | reached the mine (which included a hike up a small mountain). On arrival, it was a sight to see. Fluorite...News, P.O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-664-2448 Email: lanny@mineralnews.com...specimens for the museum and started down the mountain. Each of us carried one extra )aroe specimen in...Mme caretaker-and I) visited Iron Mountam 111Sierra County. Iron Mountain is known for producing helvite...(bismuth tungstate) in an unname~ adit on the mountain. These minerals were first collected 111small |  | | Report (issue) | | courtesy of the Natural History Museum of Los Angeles County, Los Angeles, California. INTRODUCTION Welcome...diamond-bearing deposits have been identified in Wyoming and Colorado. More than 130,000 diamonds (including gems weighing...than 28 carats) have been recovered along the Colorado-Wyoming border south of Laramie. Geological and...large-tonnage, low-grade gold resource at Sandy Mountain. There may be as much as 1 million ounces of gold...prospector. Another treasure hunter from Fort Collins, Colorado found more than 100 nuggets at South Pass, and |  | | Report (volume) | | Exploration for Porphyry Metal Deposits Based on Rutile Distribution a Test in Sumatera Titanium Mineral...Exploration for Porphyry Metal Deposits Based on Rutile Distribution a Test in Sumatera, by Eric R. Force...Exploration for porphyry metal deposits based on rutile distribution a test in Sumatera. (Contributions... 3. Porphyry Tropics. 4. PorphyryIndonesia. 5. Rutile. 6. Titanium ores United States. I. Djaswadi, Sukirno...Exploration for porphyry metal deposits based on rutile distribution a test in Sumatera, by Eric R. Force |  | | Report (volume) | | 1952, Monographies regionales. Algiers. Iron Age-The Iron Age. New York, N.Y. Jour. Geography [Tokyo]-Journal...Geol. Survey Bull., County ser.; Repr. ser.-Virginia Geological Survey Bulletin, County series; Reprint series...1925, The vanadium content of certain titaniferous iron ores of South Australia: Royal Soc. South Australia...Summarized in Anon. 1954e. Andrews, T. G., 1947, Iron ore resources of Japan with description of producing...8, p. 97-98. Attia, M. I., 1950, The geology of iron ore deposits of Egypt: Cairo, Geol. Survey of Egypt |  | | Journal (article/letter/editorial) | | Wyoming Province represents an Archean basement complex that underlies much of Wyoming and a large portion...nearly 70 miles north by Vic Norris, from Lyons, Colorado, a few years after I made the discovery. Thus...second-largest U.S. kimberlite district, known as the Iron Mountain district (Hausel et al. 2000), which remains...reflecting off oriented needlelike inclusions of rutile within the corundum (Hurlbut and Switzer 1979)...1991) and has also been identified in the Copper Mountain supracrustal belt of the Owl Creek Mountains in |
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