 | | Report (issue) | | Associated Carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL...ASSOCIATED CARBONATITES OF THE GEM PARK COMPLEX, CUSTER AND FREMONT COUNTIES, COLORADO S a n g re d a C r...,,'*^ ,,' -aCr* Gem Park, Colo. View northwestward from Democratic Mounta GEM MOUNTAIN Sawatch Range...-Cbtrfplex ving pyroxenite and gabbro of the Gem Park Complex. -« "*» +** 4ifa. Mafic-Ultramafic Igneous...Associated Carbonatites of the Gem Park Complex, Custer and Fremont Counties, Colorado By RAYMOND L. PARKER and |  | | Report (issue) | | 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...Mountains Region. 4. Mines and mineral resources—Colorado—Wet Mountains Region. I. Title. II. Series. III |  | | Report (issue) | | in the Wet Mountains Area, Custer and Fremont Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER...in the Wet Mountains Area, Custer and Fremont Counties, Colorado By THEODORE J. ARMBRUSTMACHER GEOLOGICAL...of rocks of the McClure Mountain Complex, Gem Park Complex, and complex at Democrat Creek and associated...in the Wet Mountains area, Custer and Fremont Counties, Colorado. (Geological Survey Professional Paper...16:1269 1. Alkalic igneous rocks. 2. Petrology Colorado Wet Mountains. I. Title. II. Series. QE462.A4A76 |  | | Journal (article/letter/editorial) | | Mountain, Idaho; (4) Wet Mountains, Colorado; (5) Powderhorn, Colorado; (6) Laughlin Peak, New Mexico; (7)...Powderhorn district and Wet Mountains in southern Colorado; the Mountain Pass area in southern California;...amount shown; N.D.--no Thorium veins District or County area State Dipof data] Samples analyzedRocks... Staatz (1972). steep Powderhorn Gunnison Colorado 2004- 4-3500 .2 -18 Steep 33 .01 - 4.3 Yes...(1965); Wallace and Olson (1956). Wet Custer Colorado 4004- 1-5000 <.01-50 Steep 100 ,02 -12.5 |  | | Report (issue) | | ...................... . 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 ........................Bearpaw Morntains, Mont.; (5) Ravalli County, Mont., and Lemhi County, Idaho; and (6) Magnet Cove-Potash...one such area, the Dismal Swamp placer in Elmore County, 10 EXPLANATION I 3 1 1 1 1 1 Placer locality |  | | Report (issue) | | ___________________ -_-----Lode and placer gold deposits, Mohave County _______________________ _ California ________________________...studies at Bodie ___________ _ Mother Lode, Amador County __________ _ Tertiary gravels, Nevada City area...12 12 12 13 Page Studies on land - Continued Colorado __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...Cripple Creek ______ Niobium and other elements, Gem Park Complex ________ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Silver..._---Central North Carolina _-------------Moore County __ ---------- -- ------South Carolina ____ -- __ |  | Weiland, E.F., Connors, R.A., Robinson, M.L., Lindemann, J.W., Meyer, W.T. (1982) Geochemical and geostatistical evaluation, Arkansas Canyon Planning Unit, Fremont and Custer Counties, Colorado. Open-File Report Vol. 1982 (82-462) US Geological Survey doi:10.3133/ofr82462 | Report (issue) | | Canyon Planning Unit Freemont and Custer Counties, Colorado E. F. Weiland Open-File Report 82-462 1982 ...EVALUATION ARKANSAS CANYON PLANNING UNIT FREMONT AND CUSTER COUNTIES, COLORADO VOLUME I Prepared for: United States...States Bureau of Land Management Colorado State Office Prepared by: E.F. Weiland R.A. Connors M.L. Robinson...Resources Inc. 1626 Cole Blvd., Suite 120 Golden, Colorado 80401 April 10, 1981 VOLUME I TABLE OF CONTENTS...YA-553-CTO-100 with the Bureau of Land Management, Colorado State Office. The study was based on a geochemical- |  | | Report (issue) | | Series 30 Bibliography and Index of Colorado Geology, 1984-1989 Colorado Geological Survey Department of...Resources Denver, Colorado 1990 Information Series 30 Bibliography and Index of Colorado Geology, 1984-1989...Institute under contract to the Colorado Geological Survey Colorado Geological Survey Department of...of Natural Resources Denver, Colorado 1990 ii FOREWORD In recognition of the need to more effectively...published literature on the state's geology, the Colorado Geological Survey is pleased to release Information |  | | Journal (issue) | | Marvin Hanner Additions to the Ore Mineralogy of Colorado.................................................by Donald Grybeck Crystallized Minerals of the Colorado Mineral Belt....................................with intrinsic value such as precious metals or gem materials. Also, a crystal group should have w hat...this time. Cited References KUNZ, G.F. (1892) Gem s and Precious Stones of North Am erica, Ed. E. Olsen...Lapidary Journal, 27, No. 7, 1040. ITALIAN MOUNTAIN, COLORADO by M. M. Groben Italian M ountain (elevation 13 |  | | Report (volume) | | Rm G-84 DENVER, Colorado--Federal Bldg., Rm. 169, 1961 Stout St. LAKEWOOD, Colorado-- Federal Center...Center, Bldg. 810 MENLO PARK, California--Bldg. 3, Rm. 3128,345 Middlefield Rd. • RESTON, Virginia--National...Diagram of a typical mafic-ultramafic stratiform complex 12 Cartoon cross-section of a typical komatiitic...chromite deposi a typical mafic-ultramafic stratiform complex 41 Chromite grades of pediform chromite deposits...Generalized geologic map of a zoned ultramafic complex 50 Tonnages of carbonatite deposits 52 Grades of |  | | Book | | Netherlands. Special regulations for readers in the USA — This publication has been registered with the Copyright...made in the USA. All other copyright questions, including photocopying outside of the USA, should be referred...colour index. This is, without doubt, the most complex lithologie association to be handled from the point...or in the mine workings at all. The Climax Mo complex is the best known example. Here three generations...150-200 km and are up to 15 km thick. The entire complex is composed of over 800 mappable plutons and small |  | | Report (issue) | | metamorphosed hydrothermal system at Pine Canyon. Piute County, Utah. U.S.A. [abs.]: Mineralogical Society (London)...Geology and genesis of ultrabasic nickel-copper pyrrhotite deposits at the Pacific Nickel property, southwestern...mineralogy of the Cerrillos copper deposit, Santa Fe County, New Mexico: New Mexico Geological Society Guidebook...1988. Ag-Au-Te mineralization in the Ratagain complex, northwest Scotland: Transactions Institution of...a satellite intrusion of the Palabora igneous complex, South Africa: Economic Geology, v. 81, p. 143-155 |  | | Report (volume) | | . 234 " y { " ,-t .. .~,:",. I " , COLORADO "or.! _ +, (~ STATE OF .~ :'(' COL~ADO /... BULLETIN 40 RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BlaLlllGRAPHY by James L. Nelson-Moore,...Energy COLORADO GEOLOGICAL SURVEY DEPARTMENT OF NATURAL RESUURCES STATE OF COLORADO DENVER, COLORADO 1978...ete 11 st r ng of rad i aaet 1ve occurrences 1n Colorado, with a comprehensive blbi iography and bibliographic...association of radium, uranium. and vanadIum on the Colorado Plateau sparked several periods of exploratIon |  | | Report (issue) | | schematic cross section through a carbonatite complex - - - - - - - -- --- - Map showing location and...work for a laboratoryscale pilot plant to process complex ore from the Brockman rare-earth-element deposit...Schematic cross section through a carbonatite complex (from Krauss and others, 1982a, after Garson, 1966)...within which the Lovozero Complex (fig. 4), a major carbonatite and alkaline complex, probably supplies a...nations. The supply situation for tantalum is more complex. Much of world output of tantalum is as byproduct |  | | Book | | Netherlands. Special regulations for readers in the USA — This publication has been registered w i t h the...made in the USA. A l l other copyright questions, including photocopying outside of the USA, should be...colour index. This is, without doubt, the most complex lithologic association to be handled from the point...or in the mine workings at all. The Climax Mo complex is the best known example. Here three generations...150-200 km and are up to 15 km thick. The entire complex is composed of over 800 mappable plutons and small |  | | Report (issue) | | indium, by Robert A. Weeks ---------------------Gem stones, by Robert E. Thaden --------------------...evaluations of a specific mineral deposit have become a complex task for a team of specialists, including not only...dressers, metallurgists, and economists. So many complex factors govern price at any given time that it...mineral supplies-and to start planning. Charles F. Park (1968) wrote of the decrease in mineral supplies...limits to growth: New York, Universe Books, 205 p. Park, C. F., Jr., 1968, Affluence in jeopardy: San Francisco |  | | Report (volume) | | 74, Ph miles east of Dutchtown, Cape Girardeau County, Mo. Type section cut by northtrending fault with...stream in NEIA sec. 33, T. 16 N., R. 14 E, Wayne County. Named after village of Abington, about 3 miles...Named for Adam Peak in Osgood Mountains, Humboldt County. Occupies belt about 21f2 miles long on western...Portlandian) age. Mapped around Adobe Flat in Stanislaus County. Well exposed west of Wilcox Ridge in sec. 23,...Agate Creek Formation Oligocene, lower: Central Colorado. R. H. De Voto, 1964, The Mountain Geologist, |  | | Report (volume) | | George G. The Metaline district, Pend Oreille County, Washington, [Chap.] 6 in Lead-zinc deposits in...fill of Red Light Bolson, southeastern Hudspeth County, Texas, in Geology of the southern Quitman Mountains...terraces along Maple River in northeastern Clinton County, Michigan, U.S.A. (their morphologic, genetic and...northwest quarter of Lemoine Township, AbitibiEast County [also French edition]: Quebec Dept. Nat. Resources...Mount Rainier, our only glacial volcanic national park: Sci. and Children (Washington, D.C., Natl. Sci |  | | Report (issue) | | 501. During fiscal 1963, numerous Federal, State, County, or Municipal agencies listed on page A247 have..._____ Utah.. _--_______-__-_______--_______._ Colorado ______________________________ Kansas -_--___...Southern Rocky Mountains and plains ___________ Colorado Plateau_-_____--__-____-____--_-_-_-_ Basin and..._. Federal agencies.___________________ State, county, and municipal agencies. 247 247 247 U.S. Geological...Butte iron deposit in the Gravelly Range, Madison County, Mont., is, like nearby deposits, a metamorphosed |  | | Report (issue) | | 1966 1967 1968 1969 1970 Numerous Federal, State, county, and local agencies and other organizations and...studies •.•••••••..••.••.••••• Precambrian rocks in Colorado .•.••.•••.••••..• SanJuan Mountains, Colo. • •••••••...•.• Arizona .•••.••••••.••.•.•.•.•..••••.•...• Colorado ••••••••••.•••••••••••.•.•..••..• 71 72 72 72...cooperators .............................. . State, county, and local cooperators ................. . Other...ZINC, AND SILVER Silver Cliff and Rosita area, Colorado Surface geologic mapping, augmented by seismic |  | | Report (issue) | | 1965. 1966. 1967. 1968. Numerous Federal, State, county, and local agencies and other organizations and...-___ California. _ __________________________ Colorado ______________________________ Montana. _____...disturbed belt.________________ Yellowstone National Park and vicinity. __ Snake River Plain______________________...Mountains_--_-------------- A41 Precambrian rocks of Colorado.__________ 41 41 Mesozoic stratigraphy.__________________...Dakota___________--------------75 Utah-..-.__-. -77 Colorado-____ ___________-.----77 Kansas.--.__.______-_-_ |  | | Report (issue) | | Peninsula, Mich. 10. Porphyry molybdenum ore, Colorado 11. Zinc ore, Edward, N. Y. 12. Manganese nodules...a low silica content. These rocks represent a complex sequence of alkalic rocks that were intruded into...an oval-shaped body of intrusive rock in Crook County, Wyo. This area makes up the higher part of the...the margins of the area, they are lumped as one complex unit in the central part of the region. The fieldwork...the south eastern part of the main intrusive complex. Latite makes up all the Tertiary rocks in the |  | | Report (issue) | | quality, and safe use of the land become more complex and difficult, and more critical to the National... Central region __________________________109 Colorado ____________________________109 Kansas ______...Francisco Bay regional studies _ ___ ______284 Colorado Front Range Urban Corridor _____________284 Geotechnical...Geotechnical and geohydrological studies in Fairfax County, Virginia _____________________285 Puget Sound...------ Council on Environmental Quality CFRUC ——__ Colorado Front Range Urban Corridor Project CGIS ------ |  | | Report (issue) | | _____________________ Arkansas____________________________ Colorado ____________________________ Kansas__________..._________Council on Environmental Quality CFRUC ..Colorado Front Range Urban Corridor Project CGIS _____Canada...Solar-Terrestrial Data Center NLCR ___________nonlinear complex resistivity nm _______________________nanometer...Wilderness Area in the Blue Ridge Mountains of Haywood County, N.C., contains complexly folded, high-grade metamorphic...percent disseminated sulfides, chiefly pyrite and pyrrhotite, plus tiny intergrowths of chalcopyrite and sphalerite |  | | Report (volume) | | _____________________ Arkansas____________________________ Colorado ____________________________ Kansas__________..._________Council on Environmental Quality CFRUC ..Colorado Front Range Urban Corridor Project CGIS _____Canada...Solar-Terrestrial Data Center NLCR ___________nonlinear complex resistivity nm _______________________nanometer...Wilderness Area in the Blue Ridge Mountains of Haywood County, N.C., contains complexly folded, high-grade metamorphic...percent disseminated sulfides, chiefly pyrite and pyrrhotite, plus tiny intergrowths of chalcopyrite and sphalerite |
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