GSA Annual Meeting in Denver, Colorado, USA - 2016

Session No. 180
Tuesday, 27 September 2016: 8:00 AM-12:00 PM
Room 301 (Colorado Convention Center)

T6. Micro-Analytical Techniques in Ore Deposit Research

Society of Economic Geologists; Microanalysis Society (MAS); GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division
Katharina Pfaff and Julien M. Allaz, Advocates
8:00 AM
INTERPRETATION OF MICROSCOPIC ORE TEXTURES: AN UPDATE
LUFKIN, John L., 995 Moss Street, Golden, CO 80401, lufk3@comcast.net
8:15 AM
PYRITE ENRICHMENT IN THE P2 FAULT AT THE MCARTHUR RIVER URANIUM MINE, ATHABASCA BASIN, SASKATCHEWAN: POSSIBLE REDOX CONTROLS ON MINERALIZATION
DEDECKER, John1, MONECKE, Thomas2, REYNOLDS, T. James3, ZALUSKI, Gerard4 and KOTZER, Tom4, (1)Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois St., Golden, CO 80401, (2)Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, (3)FLUID INC, 1401 Wewatta St, #PH3, Denver, CO 80202, (4)Cameco Corporation, 2121 11th Street West, Saskatoon, SK S7M 1J3, Canada, jdedecke@mymail.mines.edu
8:30 AM
INTERPRETING METASOMATISM AND REE ORE FORMING PROCESSES IN PERALKALINE GRANITIC SYSTEMS (Invited Presentation)
GYSI, Alexander P., Colorado School of Mines, Dept. Geology and Geological Engineering, 1516 Illinois Street, Golden, CO 80401, agysi@mines.edu
8:50 AM
ON THE USE OF ELECTRON MICROPROBE FOR ACCURATE AND PRECISE ANALYSIS OF REE-MINERALS
ALLAZ, Julien M.1, STERN, Charles1 and RASCHKE, Markus B.2, (1)Department of Geological Sciences, University of Colorado Boulder, 2200 Colorado Avenue, UCB 399, Boulder, CO 80309-0399, (2)Department of Physics, Chemistry, and JILA, University of Colorado Boulder, UCB 390, Boulder, CO 80309-0390, julien.allaz@colorado.edu
9:05 AM
GEOCHEMISTRY AND PRELIMINARY CONSTRAINTS ON PROVENANCE OF PLACER GRAINS OF THE FORTYMILE GOLD DISTRICT, EAST CENTRAL ALASKA
WEISBERG, Wesley R., Department of Geological Sciences, Central Washington University, 400 E. University Way, Ellensburg, WA 98926, MARSH, Erin E., U.S. Geological Survey, Box 25046, MS 973, Denver, CO 80225, LOWERS, Heather A., United States Geol Survey, Box 25046 DFC, MS 973, Denver, CO 80225; U.S. Geological Survey, Box 25046, MS 973, Denver, CO 80225 and ADAMS, David T., USGS, Box 25046, MS 973, Denver, CO 80225; U.S. Geological Survey, Box 25046, MS 973, Denver, CO 80225, weisbergw@cwu.edu
9:20 AM
THERMOBAROMETRY OF THE CASTING COPPER SKARN, NV, BASED ON APATITE INCLUSIONS IN GARNET
BARKOFF, Drew, Economic Geology, University of Arizona, 1040 E. 4th St., Tucson, AZ 85719, ASHLEY, Kyle T., The Jackson School of Geosciences, The Unversity of Texas at Austin, Austin, TX 78712 and STEELE-MACINNIS, Matthew, Geosciences, University of Arizona, 1040 E 4th St, Tucson, AZ 85721, barkoffd@email.arizona.edu
9:35 AM
PLATINUM GROUP ELEMENT (PGE) SYSTEMATICS OF ARC SULFIDES: A CASE STUDY FROM CUMULATES OF THE CHILAS COMPLEX, KOHISTAN ARC, PAKISTAN
AHMAD, Ijaz1, RICHARDS, Jeremy P.1, LIU, Jingao1, PEARSON, D. Graham1, SHAH, Mohammad Tahir2 and JAGOUTZ, Oliver3, (1)Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Science Building, Edmonton, AB T6G 2E3, Canada, (2)National Centre of Excellence in Geology, University of Peshawar, Peshawar, 25120, Pakistan, (3)Earth, Atmospheric and Planetary Sciences Department, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, ijaz1@ualberta.ca
 
9:50 AM
Break
10:05 AM
LASER ABLATION ICP-MS: WHEN THE RIGHT TOOL COMBINED WITH THE OTHER RIGHT TOOLS BECOMES EVEN MORE POWERFUL FOR ORE DEPOSITS (AND OTHERS) STUDIES (Invited Presentation)
KOENIG, Alan E., U.S. Geological Survey, Central Mineral and Environmental Resources Science Center, Box 25046, MS 973, Denver, CO 80225, akoenig@usgs.gov
10:25 AM
AN INVESTIGATION OF THE CHEMISTRY OF APATITE IN IRON OXIDE- APATITE (IOA) DEPOSITS USING MICRO-ANALYTICAL METHODS
LA CRUZ, Nikita L., Department of Earth and Environmental Sciences, University of Michigan, 1100 N University Ave, Ann Arbor, MI 48109, SIMON, Adam, Earth & Environmental Sciences, University of Michigan, 1100 N. University Ave, Ann Arbor, MI 48103, REICH, Martin, Department of Geology, School of Engineering and Science, University of Chile, Plaza Ercilla 803, Casilla 13518 Correo 21, Santiago, Chile, BARRA, Fernando, Department of Geology and Andean Geothermal Center of Excellence (CEGA), Universidad de Chile, Plaza Ercilla 803, Santiago, Chile and GAGNON, Joel E., Department of Earth and Environmental Sciences, University of Windsor, 401 Sunset Ave, Windsor, ON N9B 3P4, Canada, nlacruz@umich.edu
10:40 AM
IN SITU LA-ICPMS U-PB GEOCHRONOLOGY OF APATITE FROM IOA AND IOCG DEPOSITS, ST. FRANCOIS MOUNTAINS, SOUTHEAST MISSOURI, USA
NEYMARK, Leonid A., US Geological Survey, Denver Federal Center, Mailbox 25046, MS 963, Denver, CO 80225, HOLM-DENOMA, Chris, Central Mineral and Environmental Resources Science Center, U.S. Geological Survey, Box 25046, MS 973, Denver, CO 80225-0046, PIETRUSZKA, A.J., U.S. Geological Survey, Denver Federal Center, Denver, CO 80225, MEIGHAN, C.J., Denver Inclusion Analysis Laboratory, USGS, MS-973, Box 25046, Denver, CO 80225 and MOSCATI, Richard J., U.S. Geological Survey, Box 25046, MS 963, Denver Federal Center, Denver, CO 80225, lneymark@usgs.gov
10:55 AM
GEOCHRONOLOGY OF IOA-TYPE DEPOSITS: WHAT ARE WE DATING? (Invited Presentation)
REGAN, Sean P., U.S. Geological Survey, PO Box 628, Montpelier, VT 05602, LUPULESCU, Marian V., Research & Collections, New York State Museum, 3140 CEC, Albany, NY 12230, JERCINOVIC, M.J., Department of Geosciences, Univ of Massachusetts, Morrill Science Center, 611 North Pleasant Street, Amherst, MA 01003-5820, SINGER, Jared W., Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, GEER, Phillip S., Department of Geosciences, University of Massachusetts, Amherst, 611 North Pleasant Street, Amherst, MA 01003, CHIARENZELLI, Jeff, Department of Geology, St. Lawrence University, Canton, NY 13617, WILLIAMS, M.L., Department of Geosciences, University of Massachusetts, Amherst, 611 N Pleasant ST, Amherst, MA 01003 and WALSH, G.J., USGS, 87 State St., Montpelier, VT 05602, sregan@usgs.gov
11:15 AM
APPLICATION OF LA ICP-MS ANALYSIS OF SULFIDES TO THE DECONVOLUTION OF ELEMENTAL PARAGENESIS AND ASSOCIATIONS IN HYDROTHERMAL GOLD SYSTEMS
GOURCEROL, Blandine1, KONTAK, Daniel J.2, THURSTON, Phillips C.2 and PETRUS, Joseph A.2, (1)Department of Earth Sciences, Laurentian University, Sudbury, ON P3E 2C6, (2)Department of Earth Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada, gourcerol.blandine@gmail.com
11:30 AM
RESIDENCE OF URANIUM IN ROLL-FRONT DEPOSITS: A CASE STUDY
WYATT, Timothy O.1, PFAFF, Katharina1, MONECKE, Thomas1, ZIELINSKI, Robert A.2 and GORMAN, Brian P.3, (1)Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, (2)U.S. Geological Survey, MS 973, Denver Federal Center, Denver, CO 80225-0046, (3)Metallurgical and Materials Engineering, Colorado School of Mines, Golden, CO 80401, twyatt@mymail.mines.edu
11:45 AM
A TEM INVESTIGATION OF NICKEL ORE MINERALS FROM NEW CALEDONIA: NEW IMPLICATIONS FOR TECTONICS, HEALTH, AND ENVIRONMENTAL SAFETY
CYMES, Brittany A., Department of Geology and Environmental Earth Sciences, Miami University, 118 Shideler Hall, 250 S. Patterson Ave., Oxford, OH 45056, KREKELER, Mark P.S., Geology & Environmental Earth Science, Miami University, 1601 University Blvd., Hamilton, OH 45011, NICHOLSON, Kirsten N., Geological Sciences, Ball State University, Muncie, IN 47306 and GRIGSBY, Jeffry D., Department of Geological Sciences, Ball State University, Muncie, IN 47304, bacymes@gmail.com
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