| | 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) | 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 | | | 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 | | | Journal (article/letter/editorial) | from apatite-dolomite carbonatite, LesnayaVaraka complex, Kola Peninsula, Russia A. R. CHAKHMOURADIANAND... apatite-dolomite carbonatite, Lesnaya Varaka complex, Kola Peninsula. Introduction A~'AVITE-dolomitecarbonatite...1969), and a vermiculite rock at the Gem Park Complex, Colorado (Parker and Sharp, 1970). In all these...analyses are available for lueshite from the Sebljavr complex, Kola Peninsula (Subbotin and Men'shikov, 1987)...Occurrence and phase relationships The Lesnaya Varaka complex was intensively studied in the 1950s and 1960s | | | 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 | | | 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 | | | Report (volume) | formulas are in dispute, whereas other are members of complex substitution series. Most rare-earth minerals contain...Rontgenite Rowlandite - - - - Dimorph of chevkinite Complex multiple oxide of Nb, Ta, Ti, U, and Poorly defined...Science, U niv. Park, Pa., Coal Sci. Papers-American Conference on Coal Science, University Park, Pa., 1966...1966, Coal Science Papers, University Park, Pa. Am. Geophys. Union Trans.-Transactions of the American Geophysical...and Mineral Resources. Colorado School Mines Mineral Industries Bull.-Colorado School of Mines, Mineral | | | 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) | 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) | 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 (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 (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 | | | 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 ------ | | | 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 | | | 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) | analyses of apatite includes 939 analyses of fluorapatite, Ca5(P04)3F (by far the most common), chlorapatite...which are rocks composed mainly of carbonate-fluorapatite, Ca5(P04,C03)3F, and carbonate-hydroxylapatite...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. |
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