Celsius Resources Limited’s (ASX:CLA) Philippine subsidiary, Tambuli Mining Company, Inc. (TMCI), has received significant copper-gold assay results from the at the Nabiga-A Hill Copper-Gold Project in the Province of Negros Occidental.
The promising results have come from the first out of seven planned diamond drill holes in the current exploration campaign at Nabiga-A Hill. The latest drilling compliments 25,056m of previous drilling across 31 diamond drill holes at the site costing approximately A$10.8 million.
Managing Director, Robert Gregory, said the results from Hole SGY-031 have confirmed that the large-scale copper-gold mineralisation, previously identified in historical drilling by Freeport-McMoRan Inc, extends vertically upwards and appears to be controlled by a series of breccias within the centre of a larger porphyry copper system.
“The copper-gold mineralisation at Nabiga-A Hill clearly has large scale potential. On the surface there is a silica cap and alteration typical of a big porphyry system. Defining the trend of the mineralisation now gives us the opportunity to test how far the system extends to the surface beneath the silica cap,” Mr Gregory said.
He added that the Sagay Project appears to contain very large-scale porphyry copper mineralisation at depth defined by the numerous historical drill hole intersections conducted by TMCI (a wholly owned subsidiary of Freeport-McMoRan Inc.), between 2012 and 2016.
Results from historical drilling at the Sagay Project include the following:
· 77.2m @ 0.69% copper & 0.19 g/t gold, within 521.4m @ 0.47% copper & 0.13g/t gold,
· 114m @ 0.68% copper & 0.20 g/t gold, within 461.4m @ 0.49% copper & 0.14 g/t gold,
· 23.9m @ 1.03% copper & 0.51 g/t gold, within 207.5m @ 0.44% copper & 0.12g/t gold,
· 26.7m @ 0.89% copper & 0.02 g/t gold, within 80.3m @ 0.64% copper & 0.03g/t gold,
· 25.79m @ 0.98% copper & 0.01g/t gold, within 56.9m @ 0.58% copper & 0.02g/t gold,
· 390.1m @ 0.46% copper & 0.11 g/t gold
Results from the first drill hole of the current campaign at Sagay, SGY-031, has confirmed the broad extents of the copper-gold mineralisation that has intersected the historical drilling.
Based on the outcropping breccia bodies and close to vertical controlling structures, Celsius’s current interpretation is that the copper-gold mineralisation extends upwards from these deeper positions and close to the silica cap which forms the local topographic high of Nabiga-A Hill.
The defined extents to the copper mineralisation support the surrounding historical drilling information that is typically defined by a lower cut-off grade of approximately 0.2% Cu.
The higher-grade intervals, which are more closely linked to a number of breccias’ and surrounding stockwork veining, have also been intersected in the predicted positions based on a vertical interpretation of the higher-grade copper-gold mineralisation.
Next Steps
There are a number of areas where the higher-grade copper-gold mineralisation is interpreted to extend. This will require a number of drill holes to effectively locate and define their extents. At the deeper levels, the overall copper-gold mineralisation has now been defined to have true widths of up to 300m, based on a 0.2% copper cut-off grade.
Within this larger defined copper-gold mineralisation, higher grade zones have been found to contain copper grades greater than 0.5% copper over widths of up to 100m in true thickness. TMCI will now focus the drilling to further define the shallower extents of the higher-grade core within the lower grade envelope.
For further information please visit: https://celsiusresources.com.au/
