Application of FIB‐SEM techniques for the advanced characterization of earth and planetary materials

L Gu, N Wang, X Tang, HG Changela - Scanning, 2020 - Wiley Online Library
Advanced microanalytical techniques such as high‐resolution transmission electron
microscopy (HRTEM), atom probe tomography (APT), and synchrotron‐based scanning …

Nanoinclusions in zoned magnetite from the Sossego IOCG deposit, Carajás, Brazil: Implication for mineral zoning and magnetite origin discrimination

XW Huang, G Beaudoin - Ore Geology Reviews, 2021 - Elsevier
Compositional zoning is common in magnetite from different geological environments, but its
formation mechanism remains controversial. Here, we characterize micron-to nano-scale …

Lifting the cloak of invisibility: Gold in pyrite from the Olympic Dam Cu-U-Au-Ag deposit, South Australia

K Ehrig, CL Ciobanu… - … : Journal of Earth …, 2023 - pubs.geoscienceworld.org
Abstract “Invisible gold” refers to gold (Au) occurring either within the lattice of a host sulfide
or as discrete nanoparticles (NPs,< 100 nm diameter) within a host that are only observable …

Distinguishing IOCG and IOA deposits via random forest algorithm based on magnetite composition

S Hong, R Zuo, X Huang, Y Xiong - Journal of Geochemical Exploration, 2021 - Elsevier
Iron oxide-copper-gold (IOCG) and iron oxide-apatite (IOA) are two significant mineral
deposit types with similar tectonic settings and hydrothermal alteration characteristics. There …

Micron-to atomic-scale investigation of rare earth elements in iron oxides

NJ Cook, CL Ciobanu, K Ehrig, AD Slattery… - Frontiers in Earth …, 2022 - frontiersin.org
Hematite (α-Fe2O3) and magnetite (Fe3O4) readily accommodate a wide range of minor
and trace elements from across the periodic table at up to wt.% concentrations. This prompts …

Multivariate statistical analysis of trace elements in pyrite: Prediction, bias and artefacts in defining mineral signatures

M Dmitrijeva, NJ Cook, K Ehrig, CL Ciobanu… - Minerals, 2020 - mdpi.com
Pyrite is the most common sulphide in a wide range of ore deposits and well known to host
numerous trace elements, with implications for recovery of valuable metals and for …

Defining early stages of IOCG systems: evidence from iron oxides in the outer shell of the Olympic Dam deposit, South Australia

MR Verdugo-Ihl, CL Ciobanu, NJ Cook, KJ Ehrig… - Mineralium …, 2020 - Springer
The IOCG deposit at Olympic Dam (South Australia) is hosted within the Roxby Downs
Granite, which displays a weakly mineralised contact to the orebody (hereafter 'outer shell') …

Nanomineralogy of hydrothermal magnetite from Acropolis, South Australia: Genetic implications for iron-oxide copper gold mineralization

MR Verdugo-Ihl, CL Ciobanu… - … : Journal of Earth …, 2021 - pubs.geoscienceworld.org
Magnetite is the dominant Fe-oxide at the Acropolis IOCG prospect, Olympic Dam district,
South Australia. Complementary microbeam techniques, including scanning transmission …

Hematite geochemistry and geochronology resolve genetic and temporal links among iron-oxide copper gold systems, Olympic Dam district, South Australia

L Courtney-Davies, CL Ciobanu, MR Verdugo-Ihl… - Precambrian …, 2019 - Elsevier
Abstract The Wirrda Well and Acropolis prospects,~ 25 km south from the Olympic Dam
deposit, are among several dozen examples of iron-oxide copper gold (IOCG) …

U-Pb geochronology and mineralogy of hematite from Mantoverde and Carmen de Cobre, northern Chile: Constraints on Andean IOCG mineralization

MR Verdugo-Ihl, CL Ciobanu… - Economic …, 2022 - pubs.geoscienceworld.org
The first U-Pb hematite dates are reported for the Mantoverde and Carmen de Cobre iron
oxide copper-gold (IOCG) deposits in the northern segment of the Coastal Cordillera, Chile …