At the Red Dome and Mungana deposits in
north Queensland, Australia, it is proposed that mineralisation and alteration developed
as a 'telescoped' overprinting continuum, ranging in style from hypothermal
to epithermal, reflecting the major changes that developed in the regional
setting over the period circa 325 - 290 Ma. Regional assessment suggests
that this also applies to many other precious and base metal deposits within
a 40 km length of the host Siluro-Devonian Chillagoe Formation.

A
ten stage paragenetic sequence of structural preparation, multi phase intrusion
and associated mineralisation, alteration and brecciation is postulated for the
Chillagoe district.