A5103173105- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- Analytical chemistry methods development
- Geochemistry and Elemental Analysis
- earthquake and tectonic studies
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Mass Spectrometry Techniques and Applications
- Radioactive element chemistry and processing
- High-pressure geophysics and materials
- Pleistocene-Era Hominins and Archaeology
- Hydrocarbon exploration and reservoir analysis
- Metal Extraction and Bioleaching
- Geology and Paleoclimatology Research
- Coal and Its By-products
- Mine drainage and remediation techniques
- Ion-surface interactions and analysis
- Nuclear Physics and Applications
- Mineral Processing and Grinding
- Forensic Anthropology and Bioarchaeology Studies
- Geomagnetism and Paleomagnetism Studies
- Marine and fisheries research
- Mercury impact and mitigation studies
- Building materials and conservation
- Laser-induced spectroscopy and plasma
Université du Québec à Chicoutimi
2013-2024
Target (United States)
2010
The University of Western Australia
2010
The accurate determination of platinum‐group elements (PGE), rhenium and gold is important in both fundamental research ore deposit studies. Questions have been raised by some authors as to whether the nickel‐sulfur fire assay technique (NiS‐FA) efficiently collects all PGE. On other hand, most isotope dilution (ID) techniques can only treat small test portion masses (2 g was used for high‐pressure asher digestion; HPA) this makes them more vulnerable nugget effects. We determined PGE...
Three-dimensional calibration surfaces, along with downhole fractionation corrections, can provide improved accuracy for trace element concentration analysis by LA-ICP-MS.
A range of independently characterised reference materials (RMs) for LA‐ICP‐MS, used the determination platinum‐group elements (PGE) and Au in a sulfide matrix, were analysed compared: 8b, PGE‐A, NiS‐3, Po727‐T1, Po724‐T Lombard meteorite. The newly developed RM NiS‐3 was as calibration all LA‐ICP‐MS analyses measured concentrations other RMs compared against their published concentrations. This data also to assess consistency calibrated different RMs. It found that Po727‐T1 8b produced...
Research Article| June 01, 2018 Critical Controls on the Formation of Contact-Style PGE-Ni-Cu Mineralization: Evidence from Paleoproterozoic Monchegorsk Complex, Kola Region, Russia Bartosz T. Karykowski; Karykowski 1School Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, CF10 3AT, United Kingdom †Corresponding author: e-mail, bkarykowski@yahoo.com Search for other works by this author on: GSW Google Scholar Wolfgang D. Maier; Maier Nikolay Y. Groshev; Groshev...
Although in situ analysis by LA‐ICP‐MS is considered a rapid technique with minimal sample preparation and data reduction, mapping areas of millimetres size using small beam (< 15 μm) can be time consuming (several hours) when quadrupole ICP‐MS used. In addition, fully quantitative imaging internal standardisation challenging samples more than one mineral phase present due to varying ablation rates. A new protocol for the quantification multiple coexisting phases, mapped at rate about 12...
Abstract In orogenic gold deposits, the mechanism by which a hydrothermal fluid precipitates in laminated quartz veins remains elusive. The Kanowna Belle deposit hosts mineralization structurally controlled quartz-pyrite that cut volcano-sedimentary and granitic rocks of Kalgoorlie terrane, Australia. Veins show microtextural evidence for multiphased emplacement, corresponding to three distinct pyrite growth zones Au enrichment is attributed high influx. To monitor chemical isotopic...
Total sulfur is an analyte for which there are few determinations published, despite the fact that it a very important element (e.g., major in most ores, gas constituent global warming, active participant acid drainage). Most geological reference materials have poor quality results, with relative standard deviations (RSD) range of 30–50%, even concentrations over 100 μg g −1 S, compromises their use as calibrators. In order to provide modern results low RSD, was determined twenty‐nine...
This article proposes a methodology to analyse the composition of very small carbonate samples such as larval fish otoliths. The chemical otoliths, which are structures in inner ear, is often used explore population dynamics fishes. Recent advances laser ablation‐inductively coupled plasma‐mass spectrometry have suggested its potential application this field. In study, analyses were performed using 193 nm A r F Resonetics LA system, an Agilent 7700X‐ ICP ‐ MS , with following ablation...
Abstract Bushveld anorthosites commonly contain the so-called “mottles” comprising irregular, typically centimetric domains of oikocrystic pyroxene or olivine enclosing small, embayed plagioclase grains. The mottles were traditionally interpreted to result from solidification trapped intercumulus liquid via in situ crystallisation at top crystal mush. Here, we present microtextural and compositional data a mottle place further constraints on formation anorthosite layers. Element maps...
The interest in selenium concentrations whole rocks is growing, part because it a useful tool for base and precious metal exploration. Selenium often neglected rock geochemistry of the inability most laboratories to make reliable determinations this element. A consequence these difficulties paucity assigned or certified values Se international geological reference materials, so that “best practice” proposed by Kane Potts (2007) obtain robust such materials cannot be followed. In order...
The metasomatised continental mantle may play a key role in the generation of some ore deposits, particular mineral systems enriched platinum-group elements (PGE) and Au. cratonic lithosphere is longest-lived potential source for these elements, but processes that facilitate their pre-concentration later remobilisation to crust are not yet well-established. Here, we report new results on petrography, major-element, siderophile- chalcophile-element composition native Ni, base metal sulphides...
The study of Te, As, Bi, Sb and Se (TABS) has increased over the past years due to their use in development low‐carbon energy technologies. However, there is a scarcity mass fraction values TABS geological reference materials. This underlines difficulty undertaking routine determinations these elements. fractions were determined materials using hydride generation‐atomic fluorescence spectrometry (HG‐AFS), calibrated with standard solutions. Comparisons literature used validate method....
We have developed a new sequential extraction technique that does not require complex procedures and is efficient in determining metal semimetal contents of carbon‐rich rocks. Six geological reference materials ( SBC ‐1, SCHS SC o‐1, SDO SGR ‐1b SL g‐1) an in‐house black shale SH ‐1) were selected to test the method, which consists four main digestion steps involving: (a) dilute HC l acid; (b) Na OH ; (c) aqua regia; (d) hydrofluoric acid. Compared with traditional regia + acid attack, this...