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Transport of Au–Ag Nanoparticles in Dense Carbon Dioxide Fluid of the Middle Crustстатья
- Авторы: Prokofiev V.Y., Banks D.A., Lobanov K.V., Selektor S.L., Milichko V.A., Borovikov A.A., Chicherov M.V.
- Журнал: Minerals
- Том: 14
- Год издания: 2024
- Первая страница: 1224
- Номер статьи: 1224
- DOI: 10.3390/min14121224
- Аннотация: Individual fluid inclusions with dense carbon dioxide hosted in quartz from the gold-bearing interval penetrated by the SD-3 Kola Superdeep borehole Borehole were studied using modern techniques. The composition and density of the carbon dioxide fluid was were determined by Raman spectroscopy and microthermometry. The density of the fluid is 0.37–1.14 g/cm3, and contains minor admixtures of nitrogen (0.3–1.8 mol %) and water (0.1–0.4 mol %). LA-ICP-MS data indicate that the carbon -dioxide fluid inclusions contain high concentrations of Au (1–2611 ppm) and Ag (1–4389 ppm), and high-precision optical data indicate that the high-density CO2 fluid of the inclusions contains Au–Ag nanoparticles. ApparentlyEvidently, gold and silver were transported from the Earth’s mantle to the crust by high-density carbon dioxide fluid in the form of nanoparticles.
- Добавил в систему: Прокофьев Всеволод Юрьевич