The influence of meteoric water on skarn formation and late-stage hydrothermal alteration at the Evciler skarn occurrences, Kazdag, NW Turkey


YÜCEL ÖZTÜRK Y., Helvaci C., Satir M.

ORE GEOLOGY REVIEWS, vol.34, no.3, pp.271-284, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Review
  • Volume: 34 Issue: 3
  • Publication Date: 2008
  • Doi Number: 10.1016/j.oregeorev.2008.01.001
  • Journal Name: ORE GEOLOGY REVIEWS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.271-284
  • Keywords: Skarn, Stable isotopes, Hydrothermal alteration, Evciler granitoid, Kazdag, Turkey, SOUTHERN YUKON TERRITORY, ORE-FORMING FLUIDS, STABLE-ISOTOPE, HYDROGEN ISOTOPE, CONTACT-METAMORPHISM, SULFUR ISOTOPE, IGNEOUS ROCKS, MINES GASPE, OSLO RIFT, OXYGEN
  • Dokuz Eylül University Affiliated: Yes

Abstract

Skarn ore deposits are generally characterized by two distinctly different alteration styles: an early prograde stage with anhydrous minerals, such as garnet (grossular/andradite) and pyroxene (diopside/hedenbergite), which forms in the presence of relatively high-temperature fluid and; a later retrograde stage with hydrous minerals, such as epidote, amphibole (actinolite), and chlorite (from most to least abundant) plus sulfides, which forms in the presence of the lower-temperature fluid. These two alteration stages commonly have been thought to reflect a dominance of magmatic and meteoric water, respectively, with relevance to the source of ore metals.