Canadian Mining Journal


COPPER-GOLD: Orestone to start exploring copper-gold project

CHILE – Orestone Mining has started exploration work on its Resguardo copper-gold porphyry project in northern Chile.

In a press release, Orestone said that a geophysical contractor has been mobilized to conduct a 10 line-kilometre induced polarization and resistivity geophysical survey or IP at the property.

According to the company, the program will consist of 5 lines of 2 km each designed to better define the presently identified IP chargeability anomaly and to test for a potential extension to the southwest.

“The present IP chargeability anomaly has been defined by two lines over a 1,000 metre strike length and a width of 300 to 600 metres starting at a depth of 200 metres with values of 15-30 mv/V,” the miner’s release states.

The Resguardo project is located 90 km northeast of the city of Copiapó and covers 29 km2 of mining concessions.

Orestone reports that copper-gold mineralization at the property occurs as disseminations and fracture coatings within a 50 to 100 metre wide vertical fracture zone along a strike length of 1,500 metres, open to the southwest.

Historically, copper and gold grading 1% to 2% and up to 0.60 g/t respectively were mined in a shallow open pit measuring 150 x 60 metres and several tunnels 50 metres below surface.

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