 | | 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 |  | | Journal (article/letter/editorial) | | Complexes in the Wet Mountains Area, Fremont and Custer Counties, Colorado Theodore J. Armbrustmacher and Carl...Carl E. Hedge US Geological Survey, Denver, Colorado 80225, USA Abstract. Concentrations of Rb, Sr, and...alkaline complexes in the Wet Mountains area, Colorado, show that rocks formed as end-products of a variety...the McClure Mountain Complex, nepheline syenite pegmatite in the Gem Park Complex, and quartz syenite...syenite in the complex at Democrat Creek. The nepheline syenite and hornblende-biotite syenite at McClure Mountain |  | | Journal (article/letter/editorial) | | ites fromthe Wet MountainsArea, Fremont and Custer Counties,Colorado TnEOr)ORE J. ARMBRUSTMACHER Abstract...with alkalic rocks of the McClure Mountain and Gem Park Complexes, andthecomplex at DemocratCreek,canbeclassified...hornblendegneisses, associated with and cuttingrocksof the Gem Park and amphibolites--andPrecambrianintrusivegran...Subsequentwork at the Gem Plumeage (1.45 b.y.) (Taylor et al., 1975a,b) (Fig. Park Complex(Parker and Sharp...mappedwithin the Iron Mountainmafic- Complex,the Gem Park Complex,and the complex ultramaficportion of the McClure |  | | 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 |  | | 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) | | ...................... . 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 |  | | Journal (article/letter/editorial) | | 341-353 Th-rich Ioparite from the Khibina alkaline complex, Kola Peninsula: isomorphism and paragenesis ROGERH...foyaite pegmatites at Mr. Eveslogchorr, Khibina complex, Russia. It is associated with aegirine, astrophyllite...nepheline-syenite pegmatite, Khibina alkaline complex, Kola Peninsula, Russia. Introduction PEROVSKITE-GROtmminerals...pegmatite at Mt. Eveslogchorr, in the Khibina alkaline complex, Kola Peninsula. The structural formula deduced...constituent of vermiculite rock at the Gem Park Complex, Colorado. However, identification of this mineral |  | | 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 ____ -- __ |  | 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). |  | | Book | | Lengai natrocarbonatite volcano and the Ilimaussaq complex, but comparative studies on alkaline rocks have...other hand many occurrences are so extensive and complex that the descriptions will only be adequate to...Deloro stock 1 0 1 Sulli vc1n Island 102 K i pawa complex and Lake Tortue 103 Northwestern Quebec dykes 1...Baie-des-Moutons 1 59 K i n g ' s Point 1 60 La Scie complex otre Dame Bay area 161 1 62 Topsails 163 H a re...marbles of Lower Palaeozoic age, or older. The complex consists of an outer zone of quartz monzonite and |  | | 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 (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.--.__.______-_-_ |  | | 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 (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 |  | | 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 (issue) | | rare-earth elements in rocks of the differentiated complex of the Lovozero alkaline massif in relation to...to some problems of the genesis of this complex: Geokhimiya 1960, p. 701-713 (in Russian), translation...the rocks and minerals of the Oka carbonatite complex: Quebec. Geochim. et Cosmochim. Acta v. 39, p....molybdenite, and magnetite at Iron Hill, Custer County, Colorado: Econ. Geol. v. 69, p. 508-515 Hogarth, D...and accessory minerals of the Burpala alkalic complex, northern Baikal region: Izvest. Akad. Nauk SSSR |
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