THE GEOLOGY OF CINNABAR DEPOSITS OF CENTRAL PALAWAN

Henry E. Fernandez

 

 

 

 

ABSTRACT


Cinnabar mineralization in Central Palawan occurs in varied environment and lithologic units. They are essentially fissure fillings and replacements which are disposed along two regional belts trending northwest and northeast. The former belt is chiefly the eastern sole of the folded Beaufort thrust, while the latter belt is made up of fault systems sympathetic to the northeasterly structural grain of the islands.

From field and laboratory data, it is concluded that cinnabar deposits were regionally localized along Beaufort thrust and were particularly generated by Recent tectonism related to the isostatic rebound and platform stabilization and brought to the surface along structural lines in both vapor phase and aqueous solution. Tectonism and mineralization came in pit-a-pat. It is further concluded that lateral extension (especially in soil) of the mercury ores in Central Palawan has more potential than deep vertical probing.

 

 

 

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