The geology, mineralogy and exploration guide to finding gold in hot spring environments Epithermal hot spring gold deposits Epithermal gold deposits around the world Lihir gold mine , Papua New Guinea, one of the largest epithermal gold mines in the world. The deposit is located in a breached caldera at Luise Harbour that was formed by a now extinct volcano over 300,000 years ago. The ore body is contained in a hydrothermally altered epithermal gold system with the gold hosted by volcanics, intrusives and breccias.
Site contains good images of caldera, mineralization, drilling etc.
Chadak epithermal gold deposit, Uzbekistan, small group of low-sulfidation gold deposits. Fluid inclusion studies show a rejuvenated epithermal deposit. Detailed examination of mineralizing fluids and formation of deposit. Coromandel area of New Zealand, gold formed by geothermal systems. Site examines how the gold was precipitated out of the hot fluids and the techniques used to sample the geothermal fluids.