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Session No. 207
Tuesday, 29 October 2013: 8:00 AM-12:00 PM
Room 304 (Colorado Convention Center)

T97. Evolution of REE-Enriched Carbonatite-Alkalic Rock Systems: In Honor of Daniel R. Shawe

 

Ed DeWitt (deceased) and Charles H. Thorman, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:15 AM
A NEW LOOK AT IRON OXIDE-APATITE AND IRON OXIDE-COPPER-GOLD-RARE EARTH ELEMENT DEPOSITS IN THE MESOPROTEROZOIC ST. FRANCOIS MOUNTAINS TERRANE OF SOUTHEAST MISSOURI
SLACK, John F., U.S. Geological Survey, National Center, MS 954, 12201 Sunrise Valley Drive, Reston, VA 20192, DAY, Warren C., US Geological Survey, MS 911, Denver, CO 80225, MCCAFFERTY, Anne E., U.S. Geological Survey, P.O. Box 25046, MS964, Denver Federal Center, Denver, CO 80225, SEEGER, Cheryl, Missouri Dept. of Natural Resources, P.O. Box 250, Rolla, MO 65402 and NOLD, John L., Earth Science, University of Central Missouri, 107 WCM Science Building, Warrensburg, MO 64093, jfslack@usgs.gov
2
8:30 AM
STABLE ISOTOPE GEOCHEMISTRY OF THE PEA RIDGE IRON OXIDE-RARE EARTH ELEMENT DEPOSIT, ST. FRANCOIS MOUNTAINS, SOUTHEASTERN MISSOURI: TEMPERATURE OF ORE FORMATION, SOURCE OF HYDROTHERMAL FLUID, AND SOURCE OF SULFUR
JOHNSON, Craig A., US Geological Survey, MS 963, Box 25046, Denver, CO 80225, DAY, Warren C., US Geological Survey, MS 911, Denver, CO 80225 and RYE, Robert O., USGS, Box 25046, MS 963, Denver, CO 80225, cjohnso@usgs.gov
3
8:45 AM
MICROTHERMOMETRIC AND ION RATIO ANALYSES OF FLUID INCLUSIONS FROM THE PEA RIDGE IRON OXIDE-APATITE (IOA) AND BOSS-BIXBY IRON OXIDE-COPPER-GOLD (IOCG) DEPOSITS SUPPORT A MAGMATIC-HYDROTHERMAL ORIGIN
HOFSTRA, A.H.1, MEIGHAN, C.J.1 and EMSBO, Poul2, (1)Denver Inclusion Analysis Laboratory, USGS, MS-973, Box 25046, Denver, CO 80225, (2)Denver Inclusion Analysis Laboratory, USGS, Ms-973, Box 25046, Denver, CO 80225, ahofstra@usgs.gov
4
9:00 AM
U-PB AND RE-OS GEOCHRONOLOGY OF REE-RICH BRECCIA PIPES FROM THE MESOPROTEROZOIC PEA RIDGE FE-REE-AU DEPOSIT, ST. FRANCOIS MOUNTAINS, MISSOURI
ALEINIKOFF, John N.1, SELBY, David2, DAY, Warren C.3, SLACK, John F.4, PILLERS, Renee M.1, SEEGER, Cheryl5 and SAMSON, Iain M.6, (1)US Geological Survey, MS 963, Denver, CO 80225, (2)Department of Earth Sciences, University of Durham, Science Labs, Durham, DH1 3LE, United Kingdom, (3)US Geological Survey, MS 911, Denver, CO 80225, (4)US Geological Survey, National Center, MS 954, 12201 Sunrise Valley Drive, Reston, VA 20192, (5)Missouri Dept. of Natural Resources, P.O. Box 250, Rolla, MO 65402, (6)Department of Earth and Environmental Science, University of Windsor, 401 Sunset Ave, Windsor, ON N9B 3P4, Canada, jaleinikoff@usgs.gov
5
9:15 AM
RATTLESNAKE HILLS AND BEAR LODGE MOUNTAINS CARBONATITE-ALKALIC IGNEOUS COMPLEXES, WYOMING: REE'S AND OTHER TRACE-ELEMENT GEOCHEMISTRY
DUKE, Genet I., Geology, Arkansas Tech University, 1701 N. Boulder Avenue, Russellville, AR 72801 and FROST, Carol D., Department of Geology and Geophysics, University of Wyoming, Dept. 3006, 1000 University Avenue, Laramie, WY 82071, gduke1@atu.edu
6
9:30 AM
TIMING OF CARBONATITE MAGMATISM IN THE BEAR LODGE ALKALINE COMPLEX, WY
ANDERSEN, Allen K.1, COSCA, Michael A.2 and LARSON, Peter B.1, (1)School of the Environment, Washington State University, Pullman, WA 99164-2812, (2)USGS, MS 963, Denver, CO 80225-0046, akandersen@wsu.edu
7
9:45 AM
VARIATIONS IN ECONOMIC REE DISTRIBUTION AT THE BEAR LODGE DEPOSIT, WY
ANDERSEN, Allen K.1, VAN RYTHOVEN, Adrian D.2, CLARK, James G.2 and LARSON, Peter B.1, (1)School of the Environment, Washington State University, Pullman, WA 99164-2812, (2)Rare Element Resources, Ltd, 225 Union Blvd, Suite 250, Lakewood, CO 80228, akandersen@wsu.edu
 
10:00 AM
Break
8
10:15 AM
MINERALOGY AND LATE STAGE ALTERATION OF THE MOUNTAIN PASS, CALIFORNIA, ULTRAPOTASSIC SILICATE INTRUSIVE ROCKS -PRELIMINARY REPORT
STOESER, Douglas B., US Geol Survey, PO Box 25046, Denver, CO 80225-0046, dstoeser@usgs.gov
9
10:30 AM
AN INTEGRATED VIEW OF JURASSIC IRON-OXIDE-RICH HYDROTHERMAL SYSTEMS, SOUTHEASTERN CALIFORNIA AND WESTERN ARIZONA
GIRARDI, James D. and BARTON, Mark D., Dept. of Geosciences, University of Arizona, Tucson, AZ 85721, jgirardi@email.arizona.edu
10
10:45 AM
NIOBIUM PYROCHLORE MINERALIZATION IN AN IRON-RICH DOLOMITE CARBONATITE, ELK CREEK, NEBRASKA (USA)
BLESSINGTON, Michael Joseph, Department of Earth and Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE 68588-0340, KETTLER, Richard M., Department of Earth & Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE 68588-0340, VERPLANCK, Philip L., U.S. Geological Survey, P.O. Box 25046, M.S. 973, Denver Federal Center, Denver, CO 80225-0046 and FARMER, G. Lang, Dept. of Geological Sciences and CIRES, Univ. of Colorado, Campus Box 399, Boulder, CO 80309-0399, michael.blessington@huskers.unl.edu
11
11:00 AM
MINERALOGY, GEOCHEMISTRY, AND CHRONOLOGY OF THE CABALLO AND BURRO MOUNTAINS REE-BEARING EPISYENITES
RIGGINS, Annelise M.1, DUNBAR, Nelia W.2, MCLEMORE, Virginia T.2, HEIZLER, Matthew, T.2 and MCINTOSH, William2, (1)Earth & Environmental Sciences Department, New MexicoTech, Socorro, NM 87801, (2)New Mexico Bureau of Geology and Mineral Resources, New MexicoTech, Socorro, NM 87801, anneliseriggins@gmail.com
12
11:15 AM
PROTEROZOIC FLUORBRITHOLITE-BEARING REE-RICH HYDROTHERMAL PODS AND VEINS FROM NEAR JAMESTOWN, COLORADO
ALLAZ, Julien M.1, STERN, Charles R.2, PERSSON, Philip M.2 and RASCHKE, Markus B.3, (1)Department of Geological Sciences, University of Colorado at Boulder, 2200 Colorado Ave, Boulder, CO 80309-0399, (2)Department of Geological Sciences, University of Colorado Boulder, 2200 Colorado Avenue, UCB 399, Boulder, CO 80309-0399, (3)Department of Physics, Chemistry, and JILA, University of Colorado Boulder, UCB 390, Boulder, CO 80309-0390, julien.allaz@colorado.edu
13
11:30 AM
DIURNAL TRENDS IN DISSOLVED REE CONCENTRATIONS IN A MINERALIZED WATERSHED, MONTEZUMA, COLORADO
RUE, Garrett, Institute of Arctic and Alpine Research, University of Colorado - Boulder, 1560 30th Street, Boulder, CO 80303, CASTENDYK, Devin N., Dept. of Earth and Atmospheric Sciences, State University of New York, College at Oneonta, Oneonta, NY 13820 and MCKNIGHT, Diane M., Institute for Arctic and Alpine Research, Univ. of Colorado, 1560 30th Street, Boulder, CO 80309, garrett.rue@gmail.com
14
11:45 AM
ROUND MOUNTAIN, TEXAS, LACCOLITH CAN BE A RELIABLE SOURCE OF HREE FOR US INDUSTRY AND DEFENSE
GOODELL, Philip C., GOMEZ, Amed and KYGER, Nicole, Geological Sciences, University of Texas at El Paso, 500 W University Ave, El Paso, TX 79968, goodell@utep.edu
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