Geochemistry, mineralogy, Cu, Zn and Fe isotopic composition of Gossans found in Cyprus-type VMS systems from the Troodos ophiolite.

Nina Zaronikola, Vinciane Debaille , Sophie Decrée, Ryan Mathur & Christodoulos Hadjigeorgiou
The Troodos ophiolite hosts significant Volcanogenic Massive Sulfide (VMS) systems, well-known as Cyprus-type sulfide deposits. They are mafic type VMS deposits, mainly enriched in copper and zinc and they have been deposited from seawater derived-hydrothermal fluids. Along the Troodos ophiolite, the VMS system is covered by thick, Fe- rich altered caps, known as gossans, which are likely due to weathering of the VMS under oxidizing conditions. However, the conditions for their formation remain largely debated,...
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