(MENAFN - ProactiveInvestors - Australia) International Goldfields (ASX: IGS) has received assays averaging 2.22% copper for a 7 metre interval at its Ana prospect at the Latin Gold project, Brazil.
The interval exceeded the upper detection limit of 1% copper for the method used on intercepts reported in late November 2012.
This will be used to finalise the drill database for validation.
The revised intercepts better illustrate the continuity of mineralisation and geometry of 6 to 10 metre true widths through the high grade shoot on the PF Quartz Vein Zone.
The increasing copper values with depth on the PF Quartz vein indicate economically viable potential for targeting recovery of copper. Planned work for both resource modelling and preliminary metallurgical work has been revised.
A grade shell for copper will be incorporated into the geologic modelling to define geometry of a block model.
The company added that while copper grades correlate well with gold grade, significant copper intercepts have extended beyond the 0.5 grams per tonne gold cut-off in some drill results.
International has so far drilled 77 holes totalling 7,675.2 metres at the Ana prospect, identifying mineralisation on five separate vein target areas, with sufficient drilling completed on the PF Vein target to initiate geologic and grade shell modelling for maiden resource estimation on the prospect.