A5076158857- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Mineralogy and Gemology Studies
- Electron and X-Ray Spectroscopy Techniques
- Metal Extraction and Bioleaching
- Geological and Geophysical Studies
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear Physics and Applications
- Mineral Processing and Grinding
- Analytical chemistry methods development
- Geochemistry and Elemental Analysis
- Minerals Flotation and Separation Techniques
- Radioactive element chemistry and processing
- Clay minerals and soil interactions
- Paleontology and Stratigraphy of Fossils
- Advanced Materials Characterization Techniques
- Laser-induced spectroscopy and plasma
- Mine drainage and remediation techniques
- Intraocular Surgery and Lenses
- Extraction and Separation Processes
- Ion-surface interactions and analysis
- Glass properties and applications
- Coal and Its By-products
University of Tasmania
2015-2024
BHP (Australia)
2019
Hobart Private Hospital
2016
Clausthal University of Technology
2003-2004
Brothers caldera volcano is a submarine of dacitic composition, located on the Kermadec arc, New Zealand. It hosts NW vent field perched steep slope walls and includes numerous, active, high-temperature (max 302°C) chimneys greater amount dead, sulfide-rich spires. Petrographic studies these show that three main zones can occur within chimneys: chalcopyrite-rich core, surrounded by sulfate-dominated zone, which in turn mantled an external rind Fe oxides, calcite, silicates. Four chimney...
U–Pb ages of several apatite reference materials, acquired by LA-ICP-MS over a 3.5 year period using the Otter Lake as primary standard, show systematic offsets (up to 3%) from obtained isotope dilution mass spectrometry.
A new olivine reference material – Mong OL Sh11‐2 for in situ analysis has been prepared from the central portion of a large (20 × 20 10 cm) mantle peridotite xenolith ~ 0.5 My old basaltic breccia at Shavaryn‐Tsaram, Tariat region, Mongolia. The is fertile lherzolite with minimal signs alteration. Approximately g 0.5–2 mm gem quality fragments were separated under binocular microscope and analysed by EPMA , LA ‐ ICP MS SIMS bulk analytical methods ( ID Mg Fe, XRF ) major, minor trace...
Quantifying the compositional evolution of mantle-derived melts from source to surface is fundamental for constraining nature primary and deep Earth composition. Despite abundant evidence interaction between carbonate-rich melts, including diamondiferous kimberlites, mantle wall rocks en route surface, effects this on melt compositions are poorly constrained. Here, we demonstrate a robust linear correlation Mg/Si ratios kimberlites their entrained components Mg/Fe olivine cores magmatic rims...
Mantle polymict breccias sampled by kimberlite magmas are complex mixtures of mantle minerals and rock clasts, cemented together olivine, phlogopite, orthopyroxene, ilmenite, rutile sulphides. Because the kimberlite-like texture (i.e. mineral clasts diverse origin composition set in a magmatic matrix) large geochemical heterogeneity preserved breccias, these rocks believed to derive from primitive or precursor magmas. Therefore, study such xenoliths can provide constraints on processes...
Research Article| November 01, 2012 Nature of alkali-carbonate fluids in the sub-continental lithospheric mantle A. Giuliani; Giuliani 1School Earth Sciences, University Melbourne, Parkville, 3010 Victoria, Australia Search for other works by this author on: GSW Google Scholar V.S. Kamenetsky; Kamenetsky 2ARC Centre Excellence on Ore Deposits, and School Tasmania, Hobart, 7001 D. Phillips; Phillips M.A. Kendrick; Kendrick Australia3Wyatt Geological Consulting Ltd, 1/3 Westbury Grove, East...
Laser ablation-inductively coupled plasma-mass spectrometer (LA-ICP-MS) trace element maps of pyrite and gold from the Carbon Leader Reef in Witwatersrand basin provide new evidence that a significant proportion was intrabasinal, derived West Rand Group or equivalent shales stratigraphically below this reef. Rounded detrital grains vary compact to porous sooty, with similar textures composition diagenetic pyrites reported sedimentary rocks Group. Detrital sooty contain 0.4 11.3 ppm...
In this study we investigate the effect that mineral composition has on quantification of sulphur by Laser Ablation ICP-MS (LA-ICP-MS) between a range sulphide minerals: pyrite, pyrrhotite, bornite, chalcopyrite, sphalerite, pentlandite and tetrahedrite.
Iron (Fe) is an essential micronutrient that controls phytoplankton growth in the Southern Ocean. Dissolved Fe ( 0.4µm) far more abundant and may also become bioavailable through biogeochemical processing. To assess natural fertilisation from particulate fraction, we surveyed suspended particles water column at 11 stations vicinity of Heard McDonald Islands (HIMI), Indian sector Ocean compared these to downstream plateau reference stations. We quantified labile (potentially bioavailable)...
Abstract Elucidating the origin, composition and physical properties of primary kimberlite melts is crucial to our understanding their source, petrogenesis, ascent mechanisms ultimately origin diamonds. Recently, there has been a growing interest in study olivine, which one most abundant minerals kimberlites with xenocrystic, metamorphic (mantle) magmatic origins. Olivine earliest crystallise magmas, presence ubiquitous zoning (e.g. cores, internal zones, transitional rims, rinds, outmost...
A new reference material, STDGL3, for the calibration of in situ analyses sulfide minerals by LA‐ICP‐MS has been developed and characterised. It represents a lithium‐borate‐based glass containing mixture Zn‐ Fe‐sulfide concentrates doped with several chalcophile elements as well Zr, Gd, Hf Ta required assessing common interferences on Ag, Au Pt. STDGL3 wider range better homogeneity compared existing materials analysis sulfides. Compositional variations most are below 3% RSD, 5% RSD Pt, 7%...
Hydrothermal magnetite from the Starra iron oxide‑copper gold (IOCG) deposit in northwest Queensland, Australia, records a gradual decrease V, Ni, Cr, and Mn that correlates with transition early, amphibole-biotite-magnetite dominant alteration to late, chlorite-quartz-hematite-dominated assemblages. The observed systematic change multivariate elements is interpreted indicate an increase fO2 during main Cu(Au) mineralization. We suggest variations Cr contents of at either primary magmatic...
The petrologically unique Udachnaya-East kimberlite (Siberia, Russia) is characterised by unserpentinised and H2O-poor volcaniclastic coherent units that contain fresh olivine, along with abundant alkali-rich carbonates, chlorides, sulphides sulphates in the groundmass. These mineralogical geochemical characteristics have led to two divergent models advocate different origins. It has been suggested from are representative of pristine unaltered kimberlite. Conversely, alkali-chlorine-sulphur...
Abstract Electron microprobe trace element analysis is a significant challenge. Due to the low net intensity of peak measurements, accuracy and precision such analyses relies critically on background any pertinent interference corrections. A linear regression between two points selected at appropriate positions classical approach for electron probe microanalysis (EPMA). However, this neglects accurate assessment curvature (exponential or polynomial), presence interferences, hole in...