New compositional data concerning Au-Ag alloys from the northern part of Roşia Montană deposit, Metaliferi Mountains, Romania

Abstract : This paper presents the results of the new investigations by optical microscopy, scanning electron microscopy (SEM) and electron-probe micro-analysis (EPMA) performed on samples collected from Orlea adit from Roşia Montană Au-Ag deposit, Romania. Based on composition, three types of Au-Ag alloy were described. At Roşia Montană, galena, pyrite, chalcopyrite and sphalerite are intimately associated with gold, electrum and tellurium-bearing minerals. At Roşia Montană, the precipitation of Au-Ag alloy with variable composition can be assigned to compositional changes of the parent hydrothermal solutions during deposition due to boiling, fluid dilution and cooling.
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https://hal.archives-ouvertes.fr/hal-01373272
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Submitted on : Wednesday, September 28, 2016 - 2:11:02 PM
Last modification on : Wednesday, April 10, 2019 - 1:02:45 AM

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  • HAL Id : hal-01373272, version 1

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Elena Luisa Iatan, Essaïd Bilal. New compositional data concerning Au-Ag alloys from the northern part of Roşia Montană deposit, Metaliferi Mountains, Romania. Romanian Journal of Mineral Deposits, 2016, 89 (1-2), pp.55-58. ⟨Pas encore en ligne⟩. ⟨hal-01373272⟩

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