Metallica drills porphyry project in Chile

Metallica Resources (MR-T) has encountered significant copper-gold mineralization at the El Morro porphyry prospect in north-central Chile.

In the second hole of a 10-hole program that spanned 2,000 metres, the company hit 192 metres of mineralization averaging 0.64% copper and 0.22 gram gold per tonne starting at a depth of 76 metres.

Included in that intercept was a 126-metre interval of 0.73% copper and 0.25 gram gold.

In the first hole, the company hit 124 metres, starting at 48 metres, grading 0.29% copper and 0.18 gram gold.

Metallica expects to drill four holes at El Morro (totalling 1,100 metres), with another six planned for the neighbouring La Fortuna property, which is a 50-50 joint venture with Broken Hill Proprietary (BHP-N).

The drilling rig has since moved to the El Negro zone at La Fortuna to confirm mineralization found in a previous hole, which hit 100 metres of 0.25% copper and 0.3 gram gold.

Metallica sank four holes to test the structurally controlled, high-grade Cantarito zone. Previous drilling by BHP hit 18 metres of 6 grams gold and 22 metres of 1 gram.

The rig is scheduled to return to El Morro to complete two widely spaced holes.

El Morro comprises 1,200 ha and is adjacent to the 2,150-ha La Fortuna property, in which the company is earning an interest from BHP. The properties are 80 km east of Vallenar in Chile’s Region IV, at an elevation of 3,900 metres. They are also believed to be situated on the southern projection of the West Fissure zone. The West Fissure is a structural lineament cutting across northern Chile, paralleling the coast, and which hosts many of the country’s largest porphyry copper deposits.

Metallica staked El Morro in 1997 after recognizing a large geochemical anomaly coincident with a magnetic anomaly. It is conducting mineralogical work evaluating the potential of a chalcocite enrichment blanket.

Metallica also completed a broad resistivity-induced polarization (IP) survey over El Morro in 1998, which identified a moderate-to-high resistivity core surrounded by an IP chargeability high and resistivity low, measuring 2 by 4 km.

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