Geothermal systems occur in a range of crustal settings. The emphasis of this review is on
those occurring in regions of active or recently active volcanism, where magmatic heat at …

Structurally hosted lode gold-bearing quartz vein systems in metamorphic terranes possess
many characteristics in common, spatially and through time; they constitute a single class of …

Epigenetic gold deposits in metamorphic terranes include those of the Precambrian shields
(approx 23,000-25,000 t Au), particularly the Late Archean greenstone belts and …

A metamorphic devolatilization model can explain the enrichment, segregation, timing,
distribution and character of many goldfields such as those found in Archean greenstone …

Although Au and As can be enriched up to the weight percent level in arsenian pyrite, there
is little knowledge of their limiting concentrations and nature of incorporation. This study …

This thoroughly revised and expanded new edition incorporates the most recent research
findings on the subject, such as the discovery of dramatic undersea hydrothermal vents. It …

This is a revised adaption of the manual used for the short course of the same name
presented, at the SME/SEG Meeting in Phoenix in March, 1996, with modifications in …

Here we argue that life emerged on Earth from a redox and pH front at c. 4.2 Ga. This front
occurred where hot (c. 150° C), extremely reduced, alkaline, bisulphide-bearing, submarine …

A large number of aqueous metal complexes contribute significantly to hydrothermal,
metamorphic, and magmatic processes in the crust of the Earth. Nevertheless, relatively few …

Although gold is a noble metal and is effectively insoluble even in strong acids, we have
known for nearly 500 years that it can be concentrated to mineable levels by being …