A5063073052- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
- High-pressure geophysics and materials
- Geochemistry and Elemental Analysis
- Geotechnical and Geomechanical Engineering
- Geomagnetism and Paleomagnetism Studies
- Mineralogy and Gemology Studies
- Mining and Gasification Technologies
- Geological Studies and Exploration
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Mining Techniques and Economics
- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Mine drainage and remediation techniques
- Analytical chemistry methods development
- Crystal Structures and Properties
- Extraction and Separation Processes
- Industrial Engineering and Technologies
- Geological Formations and Processes Exploration
- Methane Hydrates and Related Phenomena
- Astro and Planetary Science
- Edible Oils Quality and Analysis
- History and Theory of Mathematics
Bureau of Economic Analysis
2025
The University of Texas at Austin
2025
Missouri University of Science and Technology
2016-2024
Material Sciences (United States)
2024
Goddard Space Flight Center
2015
The University of Western Australia
2013-2015
ARC Centre of Excellence for Core to Crust Fluid Systems
2009-2015
Mineral Resources
2014
Australian Research Council
2013-2014
Macquarie University
2009-2013
Ore deposits are loci on Earth where energy and mass flux greatly enhanced focussed, acting as magnifying lenses into metal transport, fractionation concentration mechanisms through the lithosphere. Here we show that metallogenic architecture of lithosphere is illuminated by geochemical signatures metasomatised mantle rocks post-subduction magmatic-hydrothermal mineral systems. Our data reveal anomalously gold tellurium rich magmatic sulfides in mantle-derived magmas emplaced lower crust...
Abstract Both silicate melts and aqueous fluids are thought to play critical roles in the chemical differentiation of Earth's crust mantle. Yet their relative effects poorly constrained. We have addressed this issue by measuring partition coefficients for 50 trace minor elements experimentally produced fluids, coexisting basanite melts, peridotite minerals. The experiments were conducted at 1.0–4.0 GPa 950–1200°C single capsules containing (either 40 or wt %) H 2 O element‐enriched glass....
More than 390 chromite grains from komatiites and komatiitic basalts the Yilgarn craton of Western Australia Finnish part Fennoscandian Shield were analyzed using in situ laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to identify ruthenium (Ru) signatures associated with nickel sulfide-bearing rocks. Results indicate a potential method discriminate mineralized barren komatiite basalt units based on Ru concentrations for be used as resistate indicator mineral...
Abstract Mantle plumes contain heterogenous chemical components and sample variable depths of the mantle, enabling glimpses into compositional structure Earth's interior. In this study, we evaluated ocean island basalts (OIB) from nine plume locations to provide a global systematic assessment relationship between f O 2 He‐Sr‐Nd‐Pb‐W‐Os isotopic compositions. Ocean Pacific (Austral Islands, Hawaii, Mangaia, Samoa, Pitcairn), Atlantic (Azores, Canary St. Helena), Indian Oceans (La Réunion)...
<title>Abstract</title> United States heavy reliance on imports of critical minerals (CMs), including rare earth elements (REEs), underscores the importance development domestic sources. The study objective was to quantify CM and REE concentrations in coals US Gulf Coast region. were measured for 118 samples from outcrops 14 mines Coast. Results show that total REE+Yttrium (REY) (dry coal basis) are comparable those upper continental crust (UCC) with localized hot spots, such as Texas...
Fresh unserpentinised komatiitic dunite at Betheno (Western Australia) contains a distinctive sulfide assemblage of pentlandite, pyrite and millerite. The Ni tenor (i.e. concentration in the original liquid) this is excess 30 wt%, bulk composition falls within compositional range monosulfide solution (MSS) above 800°C. Such assemblages have conventionally been interpreted as result hydrothermal upgrading normal lower Ni-rich magmatic assemblages, but explanation not applicable Betheno....
Abstract We analyzed sediment cores from coastal Lake Izabal, Guatemala, to infer Holocene biogeochemical changes in the lake. At ca. 8370 calibrated yr B.P. (cal. B.P.), marine waters entered lake, which presently lies ~38 km Caribbean coast. Temporal correlation between Early drainage of high-latitude Lakes Agassiz and Ojibway (in North America) flooding Izabal suggests a causal link two processes. Our data indicate relative sea-level jump 2.60 ± 0.88 m, is larger than previous estimates...
This article reviews the processing of tellurium (Te), a critical mineral essential for clean energy transition. Tellurium is typically obtained from copper anode slimes through electrolytic refinement, however, there lack comprehensive on Te production outside this process. discusses potential alternative flowsheets Te, specifically those involving recovery base metal processes. Additionally, covers lost in porphyry concentration process as part efforts to diversify supply chains. review...
Abstract The Lake Izabal Basin in Guatemala is a major pull‐apart basin along the sinistral Polochic Fault, which part of North American and Caribbean plate boundary. infill contains information about tectonic sedimentological processes that have imparted significant control on its sedimentary section. inception has been linked to relative importance Fault history boundary; yet, record age poorly documented. This study integrates diverse datasets, including industry reports, well logs...
Abstract We present the results of a comprehensive study on concentrations first-row transition elements (FRTE: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn), as well Ga Ge, in liquidus olivine from 2.7–3.5 old Al-undepleted Al-depleted komatiites Kaapvaal Zimbabwe Cratons southern Africa, Yilgarn Craton Australia, Superior Canada. The sample set includes that remained sulfur-undersaturated upon emplacement, reached sulfide saturation owing to assimilation crustal sulfur. All grains display Zn,...
Abstract Seven major and numerous lesser Fe oxide occurrences within the 1.47 Ga St. Francois Mountains terrane in Missouri (USA) have previously been described as iron oxide-apatite (IOA) oxide-copper-gold (IOCG) deposits. Researchers speculate that these contain significant amounts of critical minerals, most notably rare earth elements cobalt. One less-studied deposits region is 1.455 Kratz Spring deposit. The deposit consists two steeply dipping magnetite bodies beneath 450 m sedimentary...
An unusual occurrence of sulfur-poor platinum group element (PGE) mineralization has been discovered at Mount Clifford in the Agnew-Wiluna belt, Western Australia, within lower part a 1,000-m-thick komatiitic dunite body. The host body consists primarily strongly serpentinized olivine adcumulates with accessory chromite. High-precision whole-rock ICP-MS data show that PGE extends over tens meters, whereas lateral extent is unknown. Palladium and Pt abundances are closely associated base...