Balboa Deposit

 mine, copper mine, open-pit mine

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This is the extent of the Botija open pit in which will be the last deposit mine from planned dates of 2041-2055. Mineralisation at Balboa is dominantly hosted by a feldspar-quartz-hornblende porphyry that intrudes the adjacent andesite at a low to moderate angle, emanating from the north-northwest. Near the surface of the central part of the deposit there is a massive, grey, weakly porphyritic unit distinguished by variably silicified and vuggy cavities. Extending to a maximum depth of 150 m below surface, this unit is relatively low grade, with variable pyrite alteration but demonstrates little evidence of oxidation and hence is not thought to be a leach cap. It is locally referred to as porphyry “B” within the logging, and is thought to be a potential lithology cap to the mineralisation.

Source:

First Quantun Cobre Panama Project NI 43-101 Technical Report:
www.sedar.com/search/search_form_pc_en.htm