Cobre Montana hits high-grade copper
THE DRILL SERGEANT: Cobre Montana (ASX: CXB) has received results from a recently-conducted surface sampling program at the company’s Mantos Grandes project in Chile.
The program has taken a total of forty-three channel samples from the area immediately surrounding the Mantos Grandes mine as well as the La Demonia and Agua del Minero prospects.
Source: Company announcement
Cobre Montana has geological reconnaissance and sampling continuing at other prospective zones within the project area including the El Verde copper porphyry target.
In February Cobre Montana announced it had commenced diamond core drilling at the project, which didn’t take very long to encounter visible intersections of copper mineralisation in the core.
The company said the latest reported sampling program has not only confirmed the tenor of the copper mineralisation but, just as importantly, it also highlights the potential for the occurrence of high-grade gold intersections.
“The surface sampling supports observations from underground exposures and from drill core and provides encouragement that further high-grade mineralisation may be located close to surface,” Cobre Montana managing director Adrian Griffin said in the company’s announcement to the Australian Securities Excghange.
Cobre Montana said the gold tends to be fine grained and generally evident only from assays.
The Agua del Minero deposit is located along a major, sub-vertical east-west fault exposed in newly developed road cuttings and drill platforms.
Cobre Montana explained how carbonate sequences are commonly represented by garnet skarn lithologies.
It went to describe how there appears to be some evidence the late stage Agua del Minero fault has acted as a conduit for mineralising fluids with emplacement of minerals where the structure traverses suitably prepared host lithologies.
At the La Demonia deposit, glacial till and colluvial rubble obscure much of the underlying rocks where mapping and sampling has focused on locating extensions of favourable lithologies.
Tunnels dating back to the 1930s were driven into the steep terrain and exploited a rich chalcocite/gold occurrence hosted by garnet skarn, some of which has been intersected in recent drilling.
Assay results of this drilling are pending.
Email: info@cobremontana.com.au
Website: www.cobremontana.com.au