About
48
Publications
14,111
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,186
Citations
Introduction
Current institution
Additional affiliations
September 2018 - present
September 2018 - present
January 2015 - August 2018
Publications
Publications (48)
Proterozoic anorthosite massifs can host significant amounts of critical and strategic metals such as Ti, V, and P, associated with magmatic Fe-Ti oxides and apatite. Yet their petrogenesis is much less understood than Fe-Ti-V-P deposits hosted in layered intrusions within large igneous provinces. Several mineralized lenses of Fe-Ti-P outcrop near...
The Lac Mirepoix Fe-Ti-P mineralization presents several mineralized lenses that outcrop near the border of the 1080 (±2) Ma Vanel and the 1016 (±2) Ma Mattawa Anorthosite massifs, in the Central Grenville Province, Quebec, Canada. The mineralization is (hemo)-ilmenite-dominated, accompanied by magnetite and apatite. It is subdivided in three diffe...
Chalcopyrite from 51 volcanogenic massive sulfide (VMS) and sea-floor massive sulfide (SMS) deposits from six lithostratigraphic settings was analyzed for trace elements by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to evaluate its potential as an indicator mineral for exploration. Partial least squares discriminant ana...
The St. Francois Mountains Terrane in southeast Missouri, USA, contains 7 major Iron Oxide Apatite (IOA) and Iron Oxide Copper Gold (IOCG) deposits as well as numerous smaller iron ore deposits. These deposits were mined for iron ore from the 1800s until 2001. Although there are currently no iron ore mining activities in Missouri, there is renewed...
The U.S. state of Missouri contains seven major and numerous lesser Fe oxide deposits within the 1.47 Ga St. Francois Mountains terrane. These deposits have been previously described as iron oxide-apatite (IOA) and iron oxide-copper-gold (IOCG) deposits and are speculated to contain significant resources of critical minerals , most notably rare ear...
Although in situ analysis by LA‐ICP‐MS is considered a rapid technique with minimal sample preparation and data reduction, mapping areas of millimetres in size using a small beam (< 15 μm) can be time consuming (several hours) when a quadrupole ICP‐MS is used. In addition, fully quantitative imaging using internal standardisation by LA‐ICP‐MS is ch...
The Jaguar nickel deposit represents an important and unconventional discovery of hydrothermal Ni resources (58.9 Mt @ 0.95% Ni) associated with magnetite and apatite within the Carajás Mineral Province, Northern Brazil. The Jaguar deposit shares several similarities with iron oxide copper-gold (IOCG) deposits of the Carajás Mineral Province, espec...
Chalcopyrite from 13 worldwide representative Ni-Cu sulfide and Reef-type PGE deposits were investigated using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) to evaluate its potential as an indicator mineral for exploration. Trace element data were investigated with PLS-DA (partial least square-discriminant analysis) which,...
The Southeast Missouri Iron Metallogenic Province in the Midcontinent USA contains seven major and several minor IOA/IOCG-type deposits and shallower vein-type deposits/prospects, all of which are spatially and temporally associated with early Mesoproterozoic (1500-1440 Ma) magmatism in the St. Francois Mountains terrane. One of the vein-type depos...
Pentlandite is the dominant Ni-hosting ore mineral in most magmatic sulfide deposits and has conventionally been interpreted as being entirely generated by solid-state exsolution from the high-temperature monosulfide solid solution (MSS) (Fe,Ni)1–xS. This process gives rise to the development of loops of pentlandite surrounding pyrrhotite grains. R...
Mineralogical and chemical zonations observed in massive sulfide ores from Ni-Cu-platinum group element (PGE) deposits are commonly ascribed to the fractional crystallization of monosulfide solid solution (MSS) and intermediate solid solution (ISS) from sulfide liquid. Recent studies of classic examples of zoned orebodies at Sudbury and Voisey’s Ba...
Conventional provenance studies of high grade (e.g., amphibolite facies) metamorphic sandstone are limited due to intense recrystallization, destruction of original minerals, and growth of new minerals. Magnetite is a heavy mineral common in a wide range of sedimentary rocks. It can originate from a wide range of rock sources from high-temperature...
Various combinations of zircon, quartz, corundum, K-feldspar, plagioclase, apatite, amphibole, rutile, titanite, almandine garnet, kyanite, andalusite, and coesite have been recovered from podiform chromitites of the Luobusa and Dongqiao ophiolites in Tibet, the Oman ophiolite and the Ray–Iz ophiolite in the Polar Urals, Russia. Chromitites in all...
We have characterized the distribution of 25 trace elements in magnetite (Mg, W, and Pb), using laser ablation ICP-MS and electron microprobe, from a variety of magmatic and hydrothermal ore-forming environ-ments and compared them with data from the literature. We propose a new multielement diagram, normalized to bulk continental crust, designed to...
The El Laco magnetite deposits consist of more than 98 % magnetite but show field textures remarkably similar to mafic lava flows. Therefore, it has long been suggested that they represent a rare example of an effusive Fe oxide liquid. Field and petrographic evidence, however, suggest that the magnetite deposits represent replacement of andesite fl...
ABSTRACT
Copper-rich massive sulfides are an important source of Pt and Pd in magmatic Ni-Cu-platinum-group element (PGE) ore deposits. At McCreedy East deposit, Sudbury, they comprise a classic magmatic assemblage of chalcopyrite (ccp), cubanite (cub) ± pentlandite (pn) located in sharp-walled footwall veins. These Cu-rich ores represent the subs...
Laser ablation ICP-MS analysis has been applied to many accessory minerals in order to understand better the process by which the rock formed and for provenance discrimination. We have determined trace element concentrations of Fe-oxides in massive sulfides that form Ni-Cu-PGE deposits at the base of the Sudbury Igneous Complex in Canada. The sampl...
Oxide minerals such as magnetite and chromite are becoming popular in the field of geochemical exploration because the wide variety of trace elements present could potentially be used in provenance studies [1]. The method of analysis used is commonly LA-ICP-MS because it provides limits of detections down to ng/g levels when the analytical paramete...
Magmatic sulfide deposits consist of pyrrhotite, pentlandite, chalcopyrite (± pyrite), and platinum-group minerals (PGM). Understanding the distribution of the chalcophile and platinum-group element (PGE) concentrations among the base metal sulfide phases and PGM is important both for the petrogenetic models of the ores and for the efficient extrac...
Average LA-ICP-MS results for pyrrhotites, pentlandites, chalcopyrites, and pyrites from the 402 Trough orebodies of Creighton deposit Mineralium Deposita
Sample location, descriptions, and whole rock concentrations of metals and S in sulfide samples from the 402 Trough orebodies, Creighton deposit, and sulfide reference materials. Modified from Table 1 of Dare et al. (2010) Mineralium Deposita
Platinum-group elements (PGE) are typically hosted in base metal sulfides (BMS) and by platinum-group minerals (PGM) in Ni-Cu-PGE sulfide deposits. At Sudbury, it appears that the majority of PGE are hosted in PGM. In order to understand why this is the case we have investigated the origin of PGM from the 402 Trough orebodies of Creighton deposit l...
Concentrations of platinum group elements (PGE), Ag, As, Au, Bi, Cd, Co, Mo, Pb, Re, Sb, Se, Sn, Te, and Zn, have been determined
in base metal sulfide (BMS) minerals from the western branch (402 Trough orebodies) of the Creighton Ni–Cu–PGE sulfide deposit,
Sudbury, Canada. The sulfide assemblage is dominated by pyrrhotite, with minor pentlandite,...
It is now possible to determine the platinum-group element (PGE) and chalcophile element contents of pyrrhotite (Po), pentlandite (Pn) and chalcopyrite (Ccp). This information may be used to: a) Improve recovery of important economic elements from ore; b) Consider the petrogenesis of the rocks. We have determined the PGE and other chalcophile eleme...
The distribution of PGE and other chalcophile elements among minerals of the Creighton Ore Body of the Sudbury Ni-Cu-PGE deposit has been investigated in order to: 1) better understand the petrogenesis of the ores and 2) aid efficient extraction of the PGE which are recovered as a by-product of mining these ores. A mass balance has been carried out...
The accessory mineral chrome–spinel, [(Mg,Fe) (Cr,Al,Fe)2O4], is well-established as a useful, alteration-resistant petrogenetic and tectonic setting indicator for mafic–ultramafic rocks. This study of unaltered spinels from 58 peridotites from oceanic and ophiolitic settings further develops the tectonic discrimination of peridotites from mid-ocea...
