Craig A. Johnson
Geology, Geophysics, and Geochemistry Science Center, Denver, CO
Activity
2024
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STABLE ISOTOPE COMPOSITIONS OF MINERALS AT HICKS DOME, IL-KY FLUORSPAR DISTRICT, USA: IMPLICATIONS FOR REE+Y-HFSE-FLUORSPAR DEPOSIT GENESIS
T126 Ore Genesis in Extensional Tectonic EnvironmentsMonday, 23 September 20241:30 PM - 5:30 PM207C
2023
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STABLE ISOTOPE COMPOSITIONS OF CARBONATES IN THE HICKS DOME CRITICAL MINERAL RESOURCE, IL-KY FLUORSPAR DISTRICT, USA: IMPLICATIONS FOR GENETIC MODELS
T95 Linking Critical Minerals and the Geologic Framework of North America: The USGS Earth Mapping Resources Initiative (Earth MRI) and Related Activities (Posters)Monday, 16 October 20238:00 AM - 5:30 PMHall B
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FIELD OBSERVATIONS AND STABLE ISOTOPE ANALYSIS OF ALUNITE AT THE SULPHUR BANK MERCURY MINE, CLEAR LAKE, CALIFORNIA
3 A Multidisciplinary Effort to Better Understand Northern California’s Clear Lake Volcanic FieldWednesday, 17 May 20238:00 AM - 12:00 PMWhitney Peak Ballroom 3
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GEOCHEMISTRY AND MINERALOGY OF MINE WASTE AT SULPHUR BANK MERCURY MINE, LAKE COUNTY, CALIFORNIA
3 A Multidisciplinary Effort to Better Understand Northern California’s Clear Lake Volcanic FieldWednesday, 17 May 20238:00 AM - 12:00 PMWhitney Peak Ballroom 3
2022
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GEOCHEMICAL SIGNATURES OF SULFIDES FROM IOA-IOCG DEPOSITS IN SE MISSOURI, USA: RELATION TO MAFIC TO INTERMEDIATE INTRUSIONS, FELSIC INTRUSIONS, AND CALDERA LAKES
265 D3. Recent Advances in Economic Geology (Posters)Wednesday, 12 October 20222:00 PM - 6:00 PMExhibit Hall F
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INSIGHTS ON IRON OXIDE-APATITE AND IRON OXIDE-COPPER-GOLD DEPOSITS FROM O AND H ISOTOPES IN ACTINOLITE
T5 Metals in Hydrothermal Systems: From Source to SinkSunday, 9 October 20228:00 AM - 12:00 PMMile High Ballroom 4C
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TECTONIC IMPLICATIONS OF PERMIAN-TRIASSIC, LATE JURASSIC, AND LATE CRETACEOUS PLUTONIC ROCKS THAT INTRUDE THE EL PASO TERRANE IN THE LANE MOUNTAIN AREA, CENTRAL MOJAVE DESERT, CALIFORNIA
33 Advances in Understanding Arc Magmatism in the Southwestern Cordillera IThursday, 17 March 20228:00 AM - 12:00 PMCBC-A 108
2019
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THE GRAPHITE CREEK FLAKE GRAPHITE DEPOSIT, SEWARD PENINSULA, ALASKA: A PRODUCT OF IN SITU METAMORPHISM AND/OR HYDROTHERMAL FLUIDS?
T256 Investigations of Hydrothermal Systems: Advances and Challenges (Posters)Wednesday, 25 September 20199:00 AM - 6:30 PMHall AB, North Building
2016
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SULFUR, OXYGEN AND CARBON ISOTOPES IN THE GAGARYAH BARITE DEPOSIT, FAREWELL TERRANE, INTERIOR ALASKA, AND COMPARISONS TO THE ISOTOPIC RECORD OF MARINE SULFUR IN DEVONIAN TIME
268 Economic GeologyWednesday, 28 September 20168:00 AM - 12:00 PMRoom 301
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DEPOSITIONAL SETTING OF METALLIFEROUS, ORGANIC-RICH BLACK MUDROCK IN THE HEATH FORMATION (UPPER MISSISSIPPIAN), CENTRAL MONTANA
344 Stratigraphy (Posters)Wednesday, 28 September 20169:00 AM - 6:30 PMExhibit Hall E/F
2014
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DEPOSITIONAL ENVIRONMENT OF MUDSTONE HOST ROCKS AT THE HOWARDS PASS ZN-PB DEPOSITS, YUKON TERRITORY, CANADA: INSIGHTS FROM IRON SPECIATION, SULFUR ISOTOPES, AND BULK FE/AL AND MO/TOC RATIOS
T96 Innovative Across-Scale Integration in Economic Geology: In the Giant Footprint of Rob KerrichMonday, 20 October 20148:00 AM - 12:00 PM204
2013
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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
T207 Evolution of REE-Enriched Carbonatite-Alkalic Rock Systems: In Honor of Daniel R. ShaweTuesday, 29 October 20138:00 AM - 12:00 PMRoom 304
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STABLE ISOTOPE (S, C, O) STUDY OF PYRITE, CHALCOPYRITE, BARITE, AND DOLOMITE FROM THE BLACK BUTTE CU-(CO-AG) DEPOSIT, MONTANA
T235 Sediment-Hosted Base Metal Deposits (Posters)Tuesday, 29 October 20139:00 AM - 6:30 PMHall D
2012
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HISTORY OF THE MISSISSIPPIAN KUNA BASIN FROM STRATIGRAPHIC PROFILES OF C- AND N-ISOTOPES: IMPLICATIONS FOR SHALE-HOSTED ZINC-LEAD-SILVER ORES OF THE RED DOG DISTRICT, NORTHWEST ALASKA
257 Economic GeologyWednesday, 7 November 20121:30 PM - 5:30 PM211AB
2011
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DIURNAL CYCLES IN DISSOLVED SELENIUM IN DRAINAGE FROM A PRECIOUS METAL ORE HEAP
T137 Sources, Transport, and Fate of Trace and Toxic Elements in the EnvironmentMonday, 10 October 20111:30 PM - 5:30 PMRoom 102D-F
2009
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OVERVIEW OF THE USGS DENVER INCLUSION ANALYSIS LABORATORY [DIAL] AND APPLICATIONS TO MINERAL RESOURCE INVESTIGATIONS
T93 Melt and Fluid Inclusion Analysis in Resource InvestigationsMonday, 19 October 20098:00 AM - 12:00 PMD135/136
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DEPOSITIONAL AND PALEOGEOGRAPHIC SETTING OF PHOSPHORITES AND METALLIFEROUS BLACK SHALES IN THE CARBONIFEROUS-PERMIAN LISBURNE GROUP, NORTHERN ALASKA
T105 Neoproterozoic through Cretaceous Evolution of the North American Cordilleran Margin: Contrasting Tectonics, Paleogeography, and Paleoenvironments (Posters)Monday, 19 October 20099:00 AM - 6:00 PMHall A
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CARBON- AND NITROGEN ISOTOPE STRATIGRAPHY OF PHOSPHORITE- AND SEDEX-RELATED ROCKS OF THE CARBONIFEROUS-PERMIAN LISBURNE GROUP, NORTHERN ALASKA
26 Economic Geology (Posters): All subjects, including IOCG and Porphyry Copper Deposits; Epithermal-Hot Springs; Non-Sulfide Ores; Gold; Magmas and Volatiles; and Copper in AsiaSunday, 18 October 20099:00 AM - 6:00 PMHall A
2008
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Geochemistry of Hanging-Wall Metasedimentary Rocks at the Greens Creek Massive Sulfide Deposit, Southeastern Alaska
256 Economic GeologyTuesday, 7 October 20081:30 PM - 5:30 PM
2007
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BRINE MIGRATION AND FORMATION OF HYDROTHERMAL ZEBRA DOLOMITE, SEDEX, AND PB-ZN DEPOSITS ALONG THE PALEOZOIC CARBONATE PLATFORM OF THE GREAT BASIN, NEVADA AND UTAH
T200 Geologic Structures, Fluid Flow, and Ore DepositsWednesday, 31 October 20078:00 AM - 12:00 PM
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SULFUR AND HELIUM ISOTOPES IN THE COBALT+COPPER± GOLD DEPOSITS OF THE IDAHO COBALT BELT
149 Economic GeologyTuesday, 30 October 20071:30 PM - 5:30 PM
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THE PERSISTENCE OF CYANIDE IN HEAP LEACH WASTES AT GOLD MINES
T8 The Environmental Geology and Geochemistry of Mineral Deposits: Best Practices for Effective Prediction, Mitigation, Closure, and Remediation ISunday, 28 October 20078:00 AM - 12:00 PM
2006
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PALEOZOIC SHALE-HOSTED BASE METAL DEPOSITS OF THE NORTHERN CORDILLERA WITH EMPHASIS ON ALASKA
25 GSA: Tectonic Setting of Mineral Occurrences in the Northern American CordilleraTuesday, 9 May 200612:50 PM - 5:00 PM
2005
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COBALT-CYANIDE COMPLEXING IN ORE PROCESSING EFFLUENTS AT GOLD MINES: SIGNIFICANCE FOR CYANIDE PERSISTENCE AND COBALT MOBILITY
T73 Sources, Transport, Fate, and Toxicology of Trace Elements in the EnvironmentMonday, 17 October 20058:00 AM - 12:00 PM
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POSSIBLE IMPACT OF HYDROTHERMAL BRINE DISCHARGE EVENTS ON SULFUR ISOTOPES IN MARINE BASINS AND THE GLOBAL OCEANS
41 Marine Anoxia over Geologic Time—Where, When, Why, and Cause and Effect Relationships to the Evolving Biosphere IIWednesday, 10 August 20051:30 PM - 4:30 PM
2004
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SULFUR- AND OXYGEN ISOTOPES OF BARITE DEPOSITS IN SEDIMENTARY BASINS: IMPLICATIONS FOR BARITE GENESIS, MASSIVE SULFIDE GENESIS, AND SULFUR REDOX REACTIONS
T79 Genetic Links among Syngenetic Metal Accumulations in Sedimentary Basins: Giant Sediment-Hosted Metal Deposits to Metalliferous Black ShalesMonday, 8 November 20048:00 AM - 12:00 PM
2003
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STABLE ISOTOPIC EVIDENCE THAT BARITE DEPOSITS IN THE WESTERN BROOKS RANGE, ALASKA MARK THE SITES OF MISSISSIPPIAN METHANE SEEPS
T144 Biogeochemical Processes at Ancient and Modern Methane Seeps IITuesday, 4 November 20038:00 AM - 12:00 PM
2002
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ISOTOPIC AND GEOCHEMICAL CONSTRAINTS FOR WITHERITE (BACO3) FROM THE SEDIMENT-HOSTED ZN-PB-AG MASSIVE SULFIDE DEPOSITS, RED DOG DISTRICT, ALASKA
T95 From Geochemistry of the Geosphere, Atmosphere, and Cosmos to Forensic Environmental Geochemistry II: A Tribute to Ian KaplanMonday, 28 October 20021:30 PM - 5:30 PM
2001
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GENETICALLY-RELATED OXIDE+CARBONATE-FACIES ZN-FE-MN DEPOSITS AND OXIDE-FACIES FE DEPOSITS IN A PROTEROZOIC BASIN SEQUENCE EXPOSED IN THE READING PRONG, NEW JERSEY AND HUDSON HIGHLANDS, NEW YORK
T141 Sediment-Hosted Lead-Zinc Deposits: Roles of Basin Evolution, Tectonics, and Geochemistry in Ore Genesis IIWednesday, 7 November 20011:30 PM - 5:30 PM
Date Unknown
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VAPOR-PHASE GARNET AT YUCCA MOUNTAIN, NEVADA: GEOCHEMISTRY AND OXYGEN-ISOTOPE THERMOMETRY
75 Aqueous Geochemistry (Posters)
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THE CLEAR CREEK INTRUSION-RELATED GOLD DEPOSIT, TINTINA GOLD BELT, YUKON, CANADA
173 Economic Geology (Posters)