Search Results - "Wilson, Siobhan A"
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1
Fizzy ore processing sequesters CO2 while supplying critical metals
Published in Proceedings of the National Academy of Sciences - PNAS (27-09-2022)Get full text
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Biologically induced mineralization of dypingite by cyanobacteria from an alkaline wetland near Atlin, British Columbia, Canada
Published in Geochemical transactions GT (05-12-2007)“…This study provides experimental evidence for biologically induced precipitation of magnesium carbonates, specifically dypingite (Mg5(CO3)4(OH)2.5H2O), by…”
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Microbially Accelerated Carbonate Mineral Precipitation as a Strategy for in Situ Carbon Sequestration and Rehabilitation of Asbestos Mine Sites
Published in Environmental science & technology (02-02-2016)“…A microbially accelerated process for the precipitation of carbonate minerals was implemented in a sample of serpentinite mine tailings collected from the…”
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Mineral phosphorus drives glacier algal blooms on the Greenland Ice Sheet
Published in Nature communications (25-01-2021)“…Melting of the Greenland Ice Sheet is a leading cause of land-ice mass loss and cryosphere-attributed sea level rise. Blooms of pigmented glacier ice algae…”
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Accelerating mineral carbonation in ultramafic mine tailings via direct CO2 reaction and heap leaching with potential for base metal enrichment and recovery
Published in Economic geology and the bulletin of the Society of Economic Geologists (01-03-2020)“…Accelerated carbonation of ultramafic mine tailings has the potential to offset CO2 emissions produced by mining ores from Cu-Ni-platinum group element,…”
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Production of magnesium-rich solutions by acid leaching of chrysotile: A precursor to field-scale deployment of microbially enabled carbonate mineral precipitation
Published in Chemical geology (15-10-2015)“…Carbonate minerals are one of the primary carbon sinks under investigation for sequestering anthropogenic carbon dioxide (CO2). Ultramafic rock has the…”
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Ancient micrometeorites suggestive of an oxygen-rich Archaean upper atmosphere
Published in Nature (London) (12-05-2016)“…Evidence in support of low atmospheric oxygen concentrations on early Earth relates to the composition of the lower Archaean atmosphere; now the composition of…”
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Quantitative mineral mapping of drill core surfaces; I, A method for µXRF mineral calculation and mapping of hydrothermally altered, fine-grained sedimentary rocks from a carlin-type gold deposit
Published in Economic geology and the bulletin of the Society of Economic Geologists (01-06-2021)“…Mineral distributions can be determined in drill core samples from a Carlin-type gold deposit, using micro-X-ray fluorescence (µXRF) raster data. Micro-XRF…”
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Chromium Reaction Mechanisms for Speciation using Synchrotron in-Situ High-Temperature X‑ray Diffraction
Published in Environmental science & technology (07-07-2015)“…We use in situ high-temperature X-ray diffraction (HT-XRD), ex-situ XRD and synchrotron X-ray absorption near edge structure spectroscopy (XANES) to derive…”
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Environmental and Mineralogical Controls on Biosignature Preservation in Magnesium Carbonate Systems Analogous to Jezero Crater, Mars
Published in Astrobiology (01-05-2023)“…Jezero Crater on Mars is a paleolacustrine environment where Mg-carbonates may host evidence of ancient life. To elucidate the environmental and mineralogical…”
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Quantifying carbon fixation in trace minerals from processed kimberlite: A comparative study of quantitative methods using X-ray powder diffraction data with applications to the Diavik Diamond Mine, Northwest Territories, Canada
Published in Applied geochemistry (01-12-2009)“…The capacity of mine waste to trap CO2 is, in some cases, much larger than the greenhouse gas production of a mining operation. In mine tailings, the presence…”
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Potential for offsetting diamond mine carbon emissions through mineral carbonation of processed kimberlite: an assessment of De Beers mine sites in South Africa and Canada
Published in Mineralogy and petrology (01-12-2018)“…De Beers kimberlite mine operations in South Africa (Venetia and Voorspoed) and Canada (Gahcho Kué, Victor, and Snap Lake) have the potential to sequester…”
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Isotopic Disequilibrium during Uptake of Atmospheric CO2 into Mine Process Waters: Implications for CO2 Sequestration
Published in Environmental science & technology (15-12-2010)“…Dypingite, a hydrated Mg-carbonate mineral, was precipitated from high-pH, high salinity solutions to investigate controls on carbon fixation and to identify…”
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A depositional model for hydromagnesite-magnesite playas near Atlin, British Columbia, Canada
Published in Sedimentology (01-10-2014)“…This study formulates a comprehensive depositional model for hydromagnesite–magnesite playas. Mineralogical, isotopic and hydrogeochemical data are coupled…”
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Subarctic Weathering of Mineral Wastes Provides a Sink for Atmospheric CO2
Published in Environmental science & technology (15-09-2011)“…The mineral waste from some mines has the capacity to trap and store CO2 within secondary carbonate minerals via the process of silicate weathering…”
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Carbon dioxide fixation within mine wastes of ultramafic-hosted ore deposits; examples from the Clinton Creek and Cassiar chrysotile deposits, Canada
Published in Economic geology and the bulletin of the Society of Economic Geologists (01-01-2009)“…Carbon dioxide (CO2) is sequestered through the weathering and subsequent mineralization of the chrysotile mine tailings at Clinton Creek, Yukon Territory, and…”
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Microbially Mediated Mineral Carbonation: Roles of Phototrophy and Heterotrophy
Published in Environmental science & technology (15-10-2011)“…Ultramafic mine tailings from the Diavik Diamond Mine, Canada and the Mount Keith Nickel Mine, Western Australia are valuable feedstocks for sequestering CO2…”
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Formation of gypsum and bassanite by cation exchange reactions in the absence of free-liquid H2O: Implications for Mars
Published in Journal of Geophysical Research: Planets (01-09-2011)“…Smectites and hydrated Mg sulfate minerals have been identified in close association at various locations on the Martian surface. The hydration states of…”
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Preservation of Terrestrial Microorganisms and Organics Within Alteration Products of Chondritic Meteorites from the Nullarbor Plain, Australia
Published in Astrobiology (01-04-2022)“…Meteorites that fall to Earth quickly become contaminated with terrestrial microorganisms. These meteorites are out of chemical equilibrium in the environments…”
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Investigation of the H7 ordinary chondrite, Watson 012: Implications for recognition and classification of Type 7 meteorites
Published in Geochimica et cosmochimica acta (01-06-2014)“…Despite the fact that the number of officially classified meteorites is now over 45,000, we lack a clearly defined sequence of samples from a single parent…”
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