Epithermal replacement deposit near the coastal town of Olympiada. Mined (for lead and zink) 1972-1995. A recent project for gold extraction from stockpiled ore has been cancelled due to environmental concerns.
http://www.gl.rhbnc.ac.uk/geode/ABCD/Olympias.html
http://www.brgm.fr/mineo/SiteReport/European_ores_geologF.pdf