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Thursday’s Gossan – Cadia Ridgeway Analogy #4
Cadia – Ridgeway ɗ34 S Isotopes (diagram adapted from Wilson, 2003)
Broad correlation of copper-gold mineralisation with lighter ɗ34 S isotopes.
A similar general correlation is demonstrated by a number of British
Columbia alkalic copper-gold porphyry systems.
An empirical observation is that the lighter ɗ34 S isotopes are associated
with hydrothermal magnetite.
Q: Is this reflecting enhanced fugacity of oxygen in the hydrothermal fluids?
Q: How does this relate to copper-gold fluid carrying capacity?
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