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La Escondida Gold-Silver Project(Sonora, Mexico)
Presented to Meus Exploracion S.A. de N.V by Michel Gauthier
Gardin Inc.
Gardin Inc.
Gardin Inc.
(From Groves, D.I., Goldfarb, R.J., Gebre-Mariam, H., Hagemann, S.G., and Robert, F., 1998. Orogenic gold deposits- A proposed classification in the context of their crustal distribution and relationship to other gold deposit type: Ore geology Reviews, v. 13, 7-27).
La Escondida, Cumeral and Cerro Blanco:Three gold-silver projects in different tectonic settings
Gardin Inc.
An orogenic gold-silver deposit
La Escondida(Sonora, Mexico)
Gardin Inc.
What is the difference between an orogenic (epizonal) gold-silver deposit and an epithermal deposit gold silver deposit?
(From Groves, D.I., Goldfarb, R.J., Gebre-Mariam, H., Hagemann, S.G., and Robert, F., 1998. Orogenic gold deposits- A proposed classification in the context of their crustal distribution and relationship to other gold deposit type: Ore geology Reviews, v. 13, 7-27).
Does’it really matter? Does’it really matter? Yes, for planning an exploration strategy!Yes, for planning an exploration strategy!
Gardin Inc.
Escondida: an orogenic (epizonal) Au-Ag-Sb deposit
Jamesonite (Pb4FeSb6S14 ):The lead mineral at Escondida which indicates a characteristic Au-Sb epizonal orogenic metallic association
Gardin Inc.
Escondida: typical orogenic epizonal ore texture
Obviously a compressional tectonic
setting
Saddle reef Western end of
La Abundancia vein
Close up on reverse faultWestern end of
La Abundancia vein
Stratabound veiningWestern end of
La Abundancia vein
Stratabound veiningEastern end of
La Generosa vein
Another type of target:Gold-bearing quartz veinlets stockwork in competent gabbro hosted by incompetent
mudslates
Kalgoorlie(Australia):
A world-class orogenic gold
deposit in such competent gabbro
