Metal behaviour during magmatic-hydrothermal processes in intrusion-related gold systems, southwestern Nev/ Brunswick, Canada

摘要

Several gold deposits and occurrences associated with granitoid intrusions in New Brunswick share some similarities with newly recognized types of intrusion-related gold systems; they differ from porphyry copper-gold systems in several aspects such as fluid compositions, mineralization style, alteration, element, and mineral assemblages. In southwestern New Brunswick, two main groups of granitoid intrusions associated with gold are recognized. These are 1) a late Devonian granitic series (GS) including the Mount Pleasant, True Hill, Beech Hill, Pleasant Ridge, Kedron, and Sorrel Ridge granites,