Orogenic gold deposits of all ages, from Paleoarchean to Tertiary, show consistency in
chemical composition. They are the products of aqueous-carbonic fluids, with typically 5–20 …

The Asian continent formed during the past 800 my during late Neoproterozoic through
Jurassic closure of the Tethyan ocean basins, followed by late Mesozoic circum-Pacific and …

Many workers accept a metamorphic model for orogenic gold ore formation, where a gold-
bearing aqueous-carbonic fluid is an inherent product of devolatilization across the …

Formation of hydrothermal ore deposits requires a fluid with the capability to transport and
deposit metals, and the sources and physical and chemical characteristics of these …

Laser ablation ICP-MS imaging of gold and other trace elements in pyrite from four different
sediment-hosted gold-arsenic deposits has revealed two distinct episodes of gold …

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 …

China produces about 450 t Au per year and has government stated in-ground reserves of
approximately 12,000 t Au. Orogenic gold, or gold deposits in metamorphic rocks, and …

The Jiaodong type comprises a unique class of gold mineralisation which includes the
Linglong type quartz-vein hosted and the Jiaojia type fracture-disseminated style deposits …

Abstract The porphyry Cu-Mo deposit in Butte, Montana, formed where magmatic
hydrothermal fluids, introduced with injections of porphyrytic dikes, fractured and permeated …

Abstract The North China Craton (NCC) hosts some of the world-class gold deposits on the
globe, which can be classified into distinct types as the “Jiaodong type”, explosive breccia …