Results 181 to 190 of about 58,223 (220)
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Ore Geology Reviews, 2019
The Pedra Branca gold deposit is a recent discovery conducted by private exploration companies in the Troia Massif of the northern Borborema Province, Northeast Brazil.
J. Naleto +3 more
semanticscholar +1 more source
The Pedra Branca gold deposit is a recent discovery conducted by private exploration companies in the Troia Massif of the northern Borborema Province, Northeast Brazil.
J. Naleto +3 more
semanticscholar +1 more source
Structural controls on orogenic gold deposits
Acta Petrologica Sinica, 2023Lin YANG +7 more
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Orogenic Gold Mineralization in the Qolqoleh Deposit, Northwestern Iran
Resource Geology, 2007AbstractThe Qolqoleh gold deposit is located in the northwestern part of the Sanandai‐Sirjan Zone, northwest of Iran. Gold mineralization in the Qolqoleh deposit is almost entirely confined to a series of steeply dipping ductile–brittle shear zones generated during Late Cretaceous–Tertiary continental collision between the Afro‐Arabian and the Iranian ...
Farhang Aliyari +2 more
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Ore Geology Reviews, 2019
The Zhenyuan orogenic gold deposit (>100 t Au), located in the northern part of the Ailaoshan shear zone (ASSZ) in South China, is characterized by extensive alteration and mineralization in a variety of host rocks.
Huajian Li +6 more
semanticscholar +1 more source
The Zhenyuan orogenic gold deposit (>100 t Au), located in the northern part of the Ailaoshan shear zone (ASSZ) in South China, is characterized by extensive alteration and mineralization in a variety of host rocks.
Huajian Li +6 more
semanticscholar +1 more source
Gondwana Research, 2018
As sulfur is the primary complexing ligand for gold transport in aqueous fluids, recent work has demonstrated that the Archean systems can preserve mass independent fractionation of sulfur (MIF-S) to yield near-zero values (Δ33S1 = 0 ± 0.5‰).
C. Laflamme +5 more
semanticscholar +1 more source
As sulfur is the primary complexing ligand for gold transport in aqueous fluids, recent work has demonstrated that the Archean systems can preserve mass independent fractionation of sulfur (MIF-S) to yield near-zero values (Δ33S1 = 0 ± 0.5‰).
C. Laflamme +5 more
semanticscholar +1 more source
Critical Elements in Carlin, Epithermal, and Orogenic Gold Deposits
2016Abstract Carlin, epithermal, and orogenic gold deposits, today mined almost exclusively for their gold content, have similar suites of anomalous trace elements that reflect similar low-salinity ore fluids and thermal conditions of metal transport and deposition. Many of these trace elements are commonly referred to as critical or near-
Richard J. Goldfarb +2 more
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Gold mobility in Archean metasedimentary belts: Implications for orogenic gold deposits
GeologyAbstract The southern Superior Province (Canada) comprises large metasedimentary belts, such as the Pontiac and Quetico subprovinces, adjacent to Au-endowed greenstone belts. The Pontiac sedimentary rocks have been proposed as a source of Au for the highly endowed southern Abitibi greenstone belt.
Diogo Ribeiro +10 more
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Supergene gold mobility in orogenic gold deposits, Otago Schist, New Zealand
New Zealand Journal of Geology and Geophysics, 2015Gold has been chemically mobilised by groundwater from host sulphide minerals in orogenic gold deposits of Otago. Mobilisation occurred near the Cenozoic Otago Schist erosional surface beneath a sedimentary cover. Initial Au mobilisation, on a scale of micrometres, occurred when solid solution and microparticulate gold in pyrite and arsenopyrite grains
D Craw, D MacKenzie, P Grieve
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