Andrew G. Tomkins

TL;DR: In this article, a mass balance approach and the thermodynamic computer programs T hermocalc and PerpleX were used to constrain the P-T range of pyrite breakdown to pyrrhotite (which liberates sulfur) in common metamorphic lithologies.

TL;DR: In this article, the presence of polymetallic melts in a metamorphosed massive sulfide orebody is recorded by localized concentrations of Au and Ag, particularly in low-melting point metals, multiphase sulfide inclusions in high-T gangue minerals, low interfacial angles between sulfides or sulfosalts suspected of crystallizing from the melt and those that are likely to have been restitic, and sulfide and sulfosalt fillings of fractures.

TL;DR: In this article, the microstructures, geochemistry, and hydrothermal evolution of gold-bearing pyrite and arsenopyrite from six orogenic gold deposits in the Archean Eastern Goldfields Province, Western Australia were investigated.

TL;DR: In this paper, Gold has been a key strategic commodity and the study of gold deposit formation has long been investigated, and debate on the genesis of so-called "orogenic gold deposits" (>75% of gold recovered through history; [Phillips, 2013][1]), continues largely because it is difficult to

TL;DR: In this article, a combination of quantitative electron backscatter diffraction analysis, ion microprobe imaging, synchrotron XFM mapping and geochemical modelling was used to investigate the origin of the unusually high gold concentrations.