Results 11 to 20 of about 22,117 (186)

A Fluid Inclusion Study of the Brookbank Deposit, Northwestern Ontario: A Transition from Mesothermal to Epithermal Gold Deposition [PDF]

open access: goldMinerals, 2018
The Brookbank and Cherbourg Zone gold deposits are located in the Beardmore–Geraldton greenstone belt of the Wabigoon Subprovince of the Archean Superior Province of the Canadian Shield. Brookbank is a shear zone deposit, whereas the Cherbourg Zone, joined by a shear zone to the Brookbank, is a fissure vein deposit, presumably formed by the same ore ...
Stephen Kissin, Barbara Kowalski
openaire   +4 more sources

Geochemistry of the Youngbogari deposit, Republic of Korea: An unusual mesothermal gold-silver deposit of the Youngdong area.

open access: goldGEOCHEMICAL JOURNAL, 2002
Mesothermal gold-quartz veins of the Youngbogari deposit in the Youngdong area, South Korea, are hosted in faulted shear zones in Precambrian gneiss of the Sobaegsan massif. The Youngbogari deposit shares many features with other metamorphic rock-hosted gold deposits in the area, including a massive single-stage nature of veins and a simple vein ...
Kevin L. Shelton   +3 more
openaire   +4 more sources

Gilt by Association? Origins of Pyritic Gold Ores in the Victory Mesothermal Gold Deposit, Western Australia

open access: closedEconomic Geology, 2000
Sulfur isotope data and calculated fluid-rock reaction paths constrain the origin of pyritic gold ores in the Victory mesothermal gold deposit of Western Australia. Pyrite δ 34S values range from –4.4 to +5.1 and are negatively correlated with gold tenor in mafic host rocks, indicating a significant increase in fluid oxidation state accompanied ...
Palin, J M, Xu, Ying
  +6 more sources

Effect of hydrogen peroxide and lead(II) nitrate on gold cyanide leaching of Malaysian mesothermal deposit gold ore [PDF]

open access: goldPhysicochemical Problems of Mineral Processing, 2020
Physicochemical Problems of Mineral Processing. Vol. 56, 2020, Issue 5, s. 905-918 ; Fizykochemiczne Problemy Przeróbki Kopalin (1967-1976) ; Physicochemical Problems of Mineral Processing ISSN 1643-1049 (od 2000) ; Fizykochemiczne Problemy Mineralurgii ISSN 0137-1282 (1977-1999)
Baharun, Norlia   +7 more
openaire   +3 more sources

Geochemistry and genesis of mesothermal gold deposits in Korea: Base metal-rich gold mineralization of the Byungjibang mine, Hwoingsung area.

open access: bronzeJOURNAL OF MINERALOGY, PETROLOGY AND ECONOMIC GEOLOGY, 1999
Electrum (79.67-88.68 atom.%Ag)-sulfide mineralization of the Byungjibang mine in the Hwoingsung area represents the first recognized example of mesothermal gold mineralization of late Cretaceous age in South Korea, and was deposited in three stages of mineralogically simple, base metal-rich quartz±calcite veins that filled the fractures in Cretaceous ...
Chul-Ho Heo   +3 more
openaire   +4 more sources

From commodity to money: The rise of silver coinage around the Ancient Mediterranean (sixth–first centuries bce)

open access: yesArchaeometry, Volume 63, Issue 1, Page 142-155, February 2021., 2021
The reasons why the Western Mediterranean, especially Carthage and Rome, resisted monetization relative to the Eastern Mediterranean are still unclear. We address this question by combining lead (Pb) and silver (Ag) isotope abundances in silver coinage from the Aegean, Magna Graecia, Carthage and Roman Republic. The clear relationships observed between
F. Albarède   +13 more
wiley   +1 more source

Fluid Inclusions and H‐O‐C‐S‐Pb Isotope Studies of the Xinmin Cu‐Au‐Ag Polymetallic Deposit in the Qinzhou‐Hangzhou Metallogenic Belt, South China: Constraints on Fluid Origin and Evolution

open access: yesGeofluids, Volume 2021, Issue 1, 2021., 2021
Qinzhou‐Hangzhou metallogenic belt is an important polymetallic (Cu, Mo, W, Sn, Pb, Zn, Au, and Ag) belt in South China. The Xinmin polymetallic deposit is located in the southwestern segment of this belt, which ore bodies hosted in the contact zone of granite and Lower Devonian sedimentary strata and in the structure fractured zone within the strata ...
Rui-Chun Duan   +2 more
wiley   +1 more source

A New Density Model of Quartz Solubility in H2O‐CO2‐NaCl Ternary Systems up to High Temperatures and High Pressures

open access: yesGeofluids, Volume 2021, Issue 1, 2021., 2021
A novel density model for computing quartz solubility in H2O‐CO2‐NaCl hydrothermal fluids applicable to wide ranges of temperature and pressure is proposed. Based on the models of Akinfiev and Diamond (2009) and Wei et al. (2012), the effective partial molar volume of water (VH2O∗) is replaced by the partial molar volume of water (V¯H2O) by ...
Weiping Deng   +3 more
wiley   +1 more source

Mineralogical petrochemical and geochemical features of near ore metasomatism in the gold ore deposit "Verkhne-Sakukanskoye" (Northern Transbaikal Region) [PDF]

open access: yes, 2006
Discussion in comparative aspect of the nature of geochemical fields in the mesothermal gold deposits formed in blacks and a crystal substratum is continued.
Freitas, Rainhill K.   +2 more
core   +2 more sources

Atomistic modeling of thermal effects in focused electron beam induced deposition of Me$_2$Au(tfac) [PDF]

open access: yesEur. Phys. J. D 77 (2023) 15, 2022
The role of thermal effects in the focused electron beam induced deposition (FEBID) process of Me$_2$Au(tfac) is studied by means of irradiation-driven molecular dynamics simulations. The FEBID of Me$_2$Au(tfac), a commonly used precursor molecule for the fabrication of gold nanostructures, is simulated at different temperatures in the range of $300 ...
arxiv   +1 more source

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