Magali Perez
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View article: Trace element release from Bowland Shale into spring water in Lancashire
Trace element release from Bowland Shale into spring water in Lancashire Open
A sulfurous spring emerges at an outcrop of Bowland Shale Formation on Crimpton Brook, Lancashire. The spring is marked by the precipitation of white and yellow jarosite. Comparable light sulfur isotope compositions suggest that the jarosi…
View article: Characterisation of selenium and tellurium nanoparticles produced by Aureobasidium pullulans using a multi-method approach
Characterisation of selenium and tellurium nanoparticles produced by Aureobasidium pullulans using a multi-method approach Open
Aureobasidium pullulans was grown in liquid culture media amended with selenite and tellurite and selenium (Se) and tellurium (Te) nanoparticles (NPs) were recovered after 30 d incubation. A separation method was applied to recover and cha…
View article: A Unified Method for the Recovery of Metals from Chalcogenides
A Unified Method for the Recovery of Metals from Chalcogenides Open
Metal chalcogenides are ubiquitous starting materials for the extraction of metals from both primary and secondary sources. In this study, it is shown that chalcogenide compounds are electrochemically active and can be solubilized from sol…
View article: Gold in Irish Coal: Palaeo-Concentration from Metalliferous Groundwaters
Gold in Irish Coal: Palaeo-Concentration from Metalliferous Groundwaters Open
Gold grains, up to 40 μm in size and containing variable percentages of admixed platinum, have been identified in coals from the Leinster Coalfield, Castlecomer, SE Ireland, for the first time. Gold mineralisation occurs in sideritic nodul…
View article: Emplacement of oil in the Devonian Weardale Granite of northern England
Emplacement of oil in the Devonian Weardale Granite of northern England Open
Oil residues occur as solid bitumen in mineralized zones within the Devonian Weardale Granite of the northern Pennines, northern England. Comparable residues are present in the overlying Mississippian rocks and were probably derived from a…
View article: AF4-UV-MALS-ICP-MS/MS, spICP-MS, and STEM-EDX for the Characterization of Metal-Containing Nanoparticles in Gas Condensates from Petroleum Hydrocarbon Samples
AF4-UV-MALS-ICP-MS/MS, spICP-MS, and STEM-EDX for the Characterization of Metal-Containing Nanoparticles in Gas Condensates from Petroleum Hydrocarbon Samples Open
The coupling of flow field flow fractionation (FlFFF) with ICP-MS/MS for the fractionation and analysis of natural nanoparticles (NPs) in environmental samples is becoming more popular. However, the applicability of this technique to nonaq…
View article: Selenium and tellurium resources in Kisgruva Proterozoic volcanogenic massive sulphide deposit (Norway)
Selenium and tellurium resources in Kisgruva Proterozoic volcanogenic massive sulphide deposit (Norway) Open
The former mining site at Kisgruva near Kongsberg, Norway, is primarily composed of worked sulphide ore deposits, of hydrothermal origin, which occur within Precambrian metamorphic basement. Though the original targets at the Kisgruva mine…
View article: Liberation of selenium from alteration of the Bowland Shale Formation: evidence from the Mam Tor landslide
Liberation of selenium from alteration of the Bowland Shale Formation: evidence from the Mam Tor landslide Open
The Bowland Shale Formation is anomalously rich in selenium (Se) at levels an order of magnitude greater than other black shales. The Mam Tor landslide, Derbyshire, England, offers an opportunity to measure whether the Se anomaly is confer…
View article: High selenium in the Carboniferous Coal Measures of Northumberland, North East England
High selenium in the Carboniferous Coal Measures of Northumberland, North East England Open
The Carboniferous Lower and Middle Coal Measures coals of the Northumberland Coalfield are anomalously rich in selenium (Se) content (up to 62 ppm) compared to the averages for the common UK and worldwide coals. As well as posing an enviro…
View article: Geochemistry and metallogeny of Neoproterozoic pyrite in oxic and anoxic sediments
Geochemistry and metallogeny of Neoproterozoic pyrite in oxic and anoxic sediments Open
This work was supported by the NERC under Grant number NE/L001764/1. AJB is funded by NERC support of the Isotope Community Support Facility at SUERC. We are grateful to S. Mojzsis and I. Mukherjee for critical reviews, and A. Spencer and …
View article: Tellurium, selenium and cobalt enrichment in Neoproterozoic black shales, Gwna Group, UK: Deep marine trace element enrichment during the Second Great Oxygenation Event
Tellurium, selenium and cobalt enrichment in Neoproterozoic black shales, Gwna Group, UK: Deep marine trace element enrichment during the Second Great Oxygenation Event Open
Black shales of the late Neoproterozoic Gwna Group (570–580 Ma), UK , contain enrichments of tellurium (Te), selenium (Se) and cobalt (Co) relative to average shale compositions. The Te and Co enrichments bear comparison with those of ferr…
View article: Multi-stage pyrite genesis and epigenetic selenium enrichment of Greenburn coals (East Ayrshire)
Multi-stage pyrite genesis and epigenetic selenium enrichment of Greenburn coals (East Ayrshire) Open
Carboniferous coals of the Ayrshire Coalfield are enriched in selenium (Se) relative to average UK and world compositions, substituting for sulphur in pyrite. Greenburn surface mine coals are characterized by syngenetic concretionary pyrit…
View article: A study of selenoproteins in atlantic salmon (Salmo salar) using hyphenated mass spectrometry and bioinformatics
A study of selenoproteins in atlantic salmon (Salmo salar) using hyphenated mass spectrometry and bioinformatics Open
Selenium (Se) is an essential micronutrient for vertebrates and fish. Se is central to the function of selenoproteins, which play key roles in many biological functions including redox signaling, antioxidant defense, hormone metabolism, an…
View article: Multi-stage pyrite genesis and epigenetic selenium enrichment of Greenburn coals (East Ayrshire)
Multi-stage pyrite genesis and epigenetic selenium enrichment of Greenburn coals (East Ayrshire) Open
LA–ICP–MS maps for Fe, Se, Ag, As, Cu, Hg, Pb and Te for Greenburn coal samples from seams 9300 Lime and 6900 Burnfoot Bridge.
View article: Tellurium Enrichment in Jurassic Coal, Brora, Scotland
Tellurium Enrichment in Jurassic Coal, Brora, Scotland Open
Mid-Jurassic pyritic coals exposed at the village of Brora, northern Scotland, UK, contain a marked enrichment of tellurium (Te) relative to crustal mean, average world coal compositions and British Isles Carboniferous coals. The Te conten…
View article: Selenium and Other Trace Element Mobility in Waste Products and Weathered Sediments at Parys Mountain Copper Mine, Anglesey, UK
Selenium and Other Trace Element Mobility in Waste Products and Weathered Sediments at Parys Mountain Copper Mine, Anglesey, UK Open
The Parys Mountain copper mining district (Anglesey, North Wales) hosts exposed pyritic bedrock, solid mine waste spoil heaps, and acid drainage (ochre sediment) deposits. Both natural and waste deposits show elevated trace element concent…
View article: A black shale protolith for gold-tellurium mineralisation in the Dalradian Supergroup (Neoproterozoic) of Britain and Ireland
A black shale protolith for gold-tellurium mineralisation in the Dalradian Supergroup (Neoproterozoic) of Britain and Ireland Open
The Dalradian Supergroup of Britain and Ireland is mineralised by gold-tellurium vein deposits. The host succession includes carbonaceous, pyritic shales (pelites) which were a source of trace elements, including gold and tellurium. LA-ICP…