Marengo Mining has received encouraging results from a sampling and drilling program at its Rima Prospect as it continues to advance its Yandera Copper Project in Papua New Guinea. The results suggest the presence of additional domains of near-surface higher grade copper mineralization that collectively, may enhance the current Yandera resource.
Rima is about 700 metres northwest of the western edge of the Imbruminda resource area that forms part of the Yandera project. Rima was discovered in 2014 while geologists, following up on work completed in 2008 and 2009, were mapping and sampling in creeks west of the Imbrum River. Surface sampling of some creeks in the Rima area revealed elevated copper content in grab and channel samples.
In late 2014, Marengo completed four drill holes totalling 1004.6 metres at Rima in search of higher grade copper mineralization to complement the current Yandera resource. The results confirm the presence of higher grade mineralization and one of the next phases of work is to constrain its limits.
Higher grade mineralization at Rima appears to be hosted in a phyllically altered structural domain within a broader zone of potassically altered porphyritic quartz diorite and granodiorite. Sheeted veins within these structural zones of phyllic alteration have a north-northwest strike and dip steeply to the west-southwest. Domains of these sheeted veins appear to occur in a northwest trending corridor.
Marengo’s chief executive officer Pieter Britz says, “Given these encouraging results, we are not proceeding with the remainder of the previously announced 10-hole drill program. Rather, we are working towards completion of a more extensive field program during 2015, leading to a more comprehensive drill program in 2016. We remain enthusiastic about the potential of Rima and other similar prospects.”