 | | Report (issue) | | in the Wet Mountains Area, Custer and Fremont Counties, Colorado Chemical and Mineralogical Data By T...in the Wet Mountains Area, Custer and Fremont Counties, Colorado Chemical and Mineralogical Data By T...assess the resource potential of the Wet Mountains, Colorado thorium province (Armbrustmacher, 1976). The carbonatites...complex at Democrat Creek, and the quartz-barite-thorite veins of the Wet Mountains thorium province (Christman...the Wet Mountains has also been reported for Road Gulch (Staatz and Conklin, 1967), the Gem Park area |  | | Journal (article/letter/editorial) | | ites fromthe Wet MountainsArea, Fremont and Custer Counties,Colorado TnEOr)ORE J. ARMBRUSTMACHER Abstract...Mountainsareapossesshave been describedincludingRoad Gulch (Staatz distinctivepetrographiccharacteristics that...that are used and Conklin, 1967), McCoy Gulch (Heinrich and in this report to classifythem as replacement...not appar- CARBONATITE$, WET MOUNTAINS AREA, COLORADO 891 FiG. 2. Photomicrographs in plane light...SrCOz R Synchisite (Ce, La) Ca (COs)•F M -- Thorite ThSiO4 VR -- Vermiculite Xenotime Variable |  | | 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 (volume) | | Lemhi Pass quadrangle, Page Lemhi County, Idaho, and Beaverhead County, Mont ..... Jn pocket FIGURE 1....veinlets of goethite and hematite that contain thorite and, less commonly, monazite. Thirty-nine minerals...minerals quartz, magnetite, specularite, goethite, thorite, microcline, and rutile- occur in at least two-thirds...monazite, muscovite, and apatite. In addition to thorite and monazite, the thoriumbearing minerals brockite...southeast of Leadore, Idaho) to southern Ravalli County, Mont. Thorium deposits in this belt formed at |  | 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). |  | | 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 (volume) | | Th) (Ti, Nb) 2 0 6 - - - - - - May be a high RE thorite or thorogummite - - - Also aeschynite - Poorly...and Mineral Resources. Colorado School Mines Mineral Industries Bull.-Colorado School of Mines, Mineral...Colo. Colorado School Mines Quart-Colorado School of Mines, Quarterly. Golden, Colo. Colorado Sci. Soc...Soc. Proc.-Colorado Scientific Society, Proceedings. Denver, Colo. Commonwealth Bur. Soils, Tech. Comm...Johannesburg, South Africa. Mines Mag.-Mines Magazine. Colorado School of Mines Alumni Association. Denver, Colo |  | | Report (issue) | | - Tectonic movement in the Grapevine area, Kern County, Calif., by B. E. Lofgren - _ _ _ - - - _ _ _ -...extrusive volcanic rocks in Middle Park, Grand County, Colo., by G. A. Izett - - - - - _ _ - - - - _...Graford Formation of Late Pennsylvanian age, Brown County, Texas, by D. A. Myers . . . . . . . . . . . ....rocks of the Houlton-Smyrna Mills area, Aroostook County, Maine, by Louis Pavlides and W. B. N. B e r r...- - Rare-earth thorium carbonate veins of the Road Gulch area, northern Wet Mountains, Colo., by M. H |  | | Report (issue) | | listed on pages A259-A264. Numerous Federal, State, county, and municipal agencies listed on pages A211-A215...____________--------_---_--_Utah......--_---------------.--------Colorado.. ------------------------Kansas.______--_---...Wyoming.____________________ Colorado __ _______________________________ Colorado Plateau________________________________...__ Utah..____________________________________ Colorado. _ _________________________________ New Mexi... -.-..._-----_-_--__ .______.___._..___ State, county, and municipal-____________________ Other cooperators--___ |  | | Journal (volume) | | Mines and mineral resources of 7 11 Santa Cruz County, by Henry G. Hubbard 11 Discoveries in the strategic...O'Brien 77 Current mining activity in Plumas County, by C. A. Logan 85 GEOLOGIC BRANCH 88 Current...DISTRICT MINES AND MINERAL RESOURCES OF SANTA CRUZ COUNTY By Henry G. Hubbard* OUTLINE OF REPORT Page...counties created February 18, 1850, Santa Cruz County was first called Branciforte. 1 An amendment passed...Mountains, the original boundaIn 1868 the ries of the county were the same as they are at present. northern |  | | Report (issue) | | listed on pages A253A258. Numerous Federal, State, county, and municipal agencies listed on pages A205-A210...---34 Utah --------------------------------35 Colorado ----------------------------35 lCansas ------..._ Quaternary geology ______________________ _ Colorado Plateau -----------------------------Geologic...agencies ------------------------------ 205 State, county, and municipal agencies __________ _ 205 U.S. Geological...knowledge of the mineral and water resources of Colorado, Idaho, Nevada, and New Mexico has been summarized |  | | Report (volume) | | Geology California Div. Mines and Geology County Rept. Geology County Report. San Francisco, Calif. California...Notes. Colorado School Mines Mineral Industries Bull. Industries Bulletin. Golden, Colo. Colorado School...Golden, Colo. Colorado School Mines Quart. Colo. Florida State University. Colorado School of Mines...Professional Contributions of the Colorado Quarterly of the Colorado School of Mines. Golden, Com. Internat...Geological Societies Harmondsworth Road Research Harmondsworth Road Research Lab. Rept. Laboratory Report |  | | Report (issue) | | the observations of George Orwell in his book "The Road to Wigan Pier." When describing the working conditions...estimates for uranium-vanadium deposits on the Colorado Plateau: U.S. Geol. Survey Bull. 1030-D, p. 137...geostatistical analyses and computer simulation: Colorado School Mines Quart., v. 64, p. 71-98. Haun, J...Mineral-resource appraisal by the U.S. Geological Survey: Colorado School Mines Quart., v. 45, no. 1A, p. 1-27. -...Survey Bull. 1204, 61 p. Orwell, George, 1937, The road to Wigan Pier: London, Victor Gollancz, Ltd., 264 |  | | Book | | and weighs 235.5 carats, morganite rough Diego County, California, weigh Lea Collection), and from...Properties be the largest a was story Angeles County and photographs prepared from a 6,021- International...35 x while etching cleavage etched green County, California; 138 The basal face is has cracks...11 Superb, doubly Photo No. terminated Diego County, and c {oool} several Harold & with The...also described etch Antero, roded figures Colorado. their on The crystals badly beryl, similar |
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