Low temperature recrystallisation of alluvial gold in paleoplacer deposits

J Stewart, G Kerr, D Prior, A Halfpenny, M Pearce… - Ore Geology …, 2017 - Elsevier
Detrital gold particles in paleoplacer deposits develop recrystallised rims, with associated
expulsion of Ag, leading to the formation of Ag-poor rims which have been recognised in …

Secondary gold mineralization in the Amani placer gold deposit, Tanzania

SC Dunn, BP von der Heyden, A Rozendaal… - Ore Geology …, 2019 - Elsevier
Abstract The Amani Placer Gold Deposit (APGD) is located in a braided river valley in
southwestern Tanzania and is characterised by large gold nuggets with anomalously fine …

Two billion years of evolution enclosed in hydrothermal rutile: Recycling of the São Francisco Craton Crust and constraints on gold remobilisation processes

I Pereira, C Storey, J Darling, C Lana, AR Alkmim - Gondwana Research, 2019 - Elsevier
Abstract The Quadrilátero Ferrífero in the São Francisco Craton, Brazil is known for its world-
class gold deposits hosted by the Rio das Velhas greenstone belt (RdV). As in other …

Mineralogical and spectral (near-infrared) characterization of Fe-rich vermiculite-bearing terrestrial deposits and constraints for mineralogy of oxia planum, ExoMars …

AM Krzesińska, B Bultel, D Loizeau, D Craw, R April… - Astrobiology, 2021 - liebertpub.com
Oxia Planum is a Noachian plain on Mars. It was chosen as the final landing site for in situ
studies by ExoMars 2022 rover. The main scientific objectives of the mission are to …

Evaluation of the contributions of gold derived from hypogene, supergene and surficial processes in the formation of placer gold deposits

RJ Chapman, D Craw, NR Moles, DA Banks… - 2023 - pubs.geoscienceworld.org
Placer gold particles have traditionally been considered as either detrital products of
weathering or authigenic minerals growing within placers. Recent advances in …

Geochemistry and mineralogy of contrasting supergene gold alteration zones, southern New Zealand

D Craw, G Kerr - Applied Geochemistry, 2017 - Elsevier
Supergene alteration of gold deposits has had important geochemical effects that changed
the mineralogy and textures of near-surface exposures and can affect the economics of gold …

Morphological and compositional analysis of alluvial gold: The Fresnedoso gold placer (Spain)

K dos Santos Alves, SB Sánchez, JG Barreiro… - Ore Geology …, 2020 - Elsevier
The Fresnedoso creek gold placer (FGP) in the Moraleja Basin (W Iberian Massif) has been
investigated in terms of morphological, textural and compositional evolution of gold particles …

Unconformities and Gold in New Zealand: Potential Analogues for the Archean Witwatersrand of South Africa

D Craw, N Phillips, J Vearncombe - Minerals, 2023 - mdpi.com
Possible young analogues for regionally extensive unconformities (100 to 400 km2) in the
gold-bearing Witwatersrand Supergroup (Archean, South Africa) occur in the South Island of …

Mineralogy and geochemistry of biologically-mediated gold mobilisation and redeposition in a semiarid climate, southern New Zealand

G Kerr, D Craw - Minerals, 2017 - mdpi.com
Detrital gold in Late Pleistocene-Holocene placers has been chemically mobilised and
redeposited at the micron scale by biologically-mediated reactions in groundwater. These …

Gold and associated minerals in the Waikaia placer gold mine, Northern Southland, New Zealand

C McLachlan, M Negrini, D Craw - New Zealand Journal of …, 2018 - Taylor & Francis
The Waikaia alluvial gold mine is hosted in a Pleistocene paleochannel that is buried
beneath younger sediments beside the Waikaia River. The paleochannel sediments were …