epithermal gold and silver deposits. april 2017 by chris ralph. epithermal deposits form in the ground at shallow depths. they are popular with prospectors because can yield very rich deposits and they are widespread in the western us.
the utanobori gold deposit is a low‐sulfidation epithermal vein‐type deposit located in northern hokkaido japan. the deposit is hosted by conglomerate sandstone and tuff of the middle to
epithermal deposits are a type of lode deposit.they contain economic concentrations from a precious metal such as gold and silver and in some cases base metals such as copper lead iron ore and
epithermal gold deposits part ii geology and gold deposits of the oatman district northwestern arizona by ed dewitt jon p. thorson1 and robert c. smith2 abstract mines in the oatman mineralized district near oatman in northwestern arizona have produced more than 1.98 million ounces of gold from mid-tertiary epithermal silver-
epithermal gold deposits are among the richest gold deposits in the world with some bonanza grade ore shoots containing more than 1000 g/t gold or in other words a kilogram of gold for every tonne of rock mined. unfortunately the tonnage of ore in epithermal veins is typically small compared
a fascinating group and characteristic of epithermal gold deposits is that you can virtually see them forming today simply by visiting hot springs. like those with yellowstone in wyoming or rotorua in new zealand. this photo is pamukkale low sulfidation hot springs in turkey with a beautiful white centre terraces. if you like hot springs you’ll love epithermal.