Mineralogy and Genesis of Precious, Rare, and Critical Metals in Ore Deposits of Greece

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Earth Sciences".

Deadline for manuscript submissions: closed (10 November 2021) | Viewed by 4286

Special Issue Editor


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Guest Editor
Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA 50011-1027, USA
Interests: hydrothermal precious and base metal deposits; Au–Ag–Te–Se mineralogy; stable isotopes; the effects of metamorphism on massive sulfide deposits

Special Issue Information

Dear Colleagues,

This Special Issue covers the “Mineralogy and Genesis of Precious, Rare and Critical Metals in Ore Deposits of Greece” and will include a wide range of topics related to the geology, tectonics, petrology, geochemistry, and mineralogy of these hydrothermal deposits. Greece has historically been a major producer of metals, starting as far back in antiquity as 5000 years ago when the famous Lavrion district was mined for silver. Since that time, a large number of ore deposits and commodities have been discovered, which are critical to the development of Greece and the European Union. These deposits include hydrothermal and/or magmatic–hydrothermal epithermal- and porphyry-type deposits and the reduced intrusion related systems of the Serbomacedonian and the Rhodope metallogenic provinces in Northeastern Greece, which contain Sb, Te, Mo, Re, Ga, In, REE and PGE; and precious metal carbonate replacement metal deposits of Lavrion and the Kassandra mining district.

Prof. Dr. Paul G. Spry
Guest Editor

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Keywords

  • precious metals
  • base metals
  • critical metals
  • rare earth elements
  • hydrothermal processes
  • geology
  • geochemistry
  • genesis of hydrothermal deposits
  • exploration

Published Papers (1 paper)

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Research

39 pages, 11358 KiB  
Article
The Geology, Geochemistry, and Origin of the Porphyry Cu-Au-(Mo) System at Vathi, Serbo-Macedonian Massif, Greece
by Christos L. Stergiou, Vasilios Melfos, Panagiotis Voudouris, Paul G. Spry, Lambrini Papadopoulou, Alexandros Chatzipetros, Katerina Giouri, Constantinos Mavrogonatos and Anestis Filippidis
Appl. Sci. 2021, 11(2), 479; https://0-doi-org.brum.beds.ac.uk/10.3390/app11020479 - 06 Jan 2021
Cited by 6 | Viewed by 3893
Abstract
The Vathi porphyry Cu-Au ± Mo mineralization is located in the Serbo-Macedonian metallogenic province of the Western Tethyan Metallogenic Belt. It is mainly hosted by a latite and is genetically associated with a quartz monzonite intrusion, which intruded the basement rocks of the [...] Read more.
The Vathi porphyry Cu-Au ± Mo mineralization is located in the Serbo-Macedonian metallogenic province of the Western Tethyan Metallogenic Belt. It is mainly hosted by a latite and is genetically associated with a quartz monzonite intrusion, which intruded the basement rocks of the Vertiskos Unit and the latite, 18 to 17 Ma ago. A phreatic breccia crosscuts the latite. The quartz monzonite was affected by potassic alteration, whereas the latite was subjected to local propylitic alteration. Both styles of alteration were subsequently overprinted by intense sericitic alteration. M-type and A-type veins are spatially associated with potassic alteration, whereas D-type veins are related to the sericitic alteration. Three ore assemblages are associated with the porphyry stage: (1) pyrite + chalcopyrite + bornite + molybdenite + magnetite associated with potassic alteration; (2) pyrite + chalcopyrite related to propylitic alteration; and (3) pyrite + chalcopyrite + native gold ± tetradymite associated with sericitic alteration. A fourth assemblage consisting of sphalerite + galena + arsenopyrite + pyrrhotite + pyrite ± stibnite ± tennantite is related to an epithermal overprint. Fluid inclusion data indicate that the A-type veins and related porphyry-style mineralization formed at 390–540 °C and pressures of up to 646 bars (<2.6 km depth) from boiling hydrothermal fluids. A later condensation of vapor-rich inclusions resulted in a moderately saline fluid (8.4–11.2 wt % NaCl equiv) at temperatures between 311 and 392 °C, which were related to sericitic alteration, D-type veins, and associated metallic mineralization. Subsequent dilution of the moderately saline fluid at lower temperatures (205–259 °C) produced a less saline (1.4–2.9 wt % NaCl equiv.) fluid, which is likely associated with the late epithermal overprint. Full article
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